granicus.if.org Git - postgresql/blob - src/backend/nodes/equalfuncs.c

   1 /*-------------------------------------------------------------------------
   2  *
   3  * equalfuncs.c
   4  *        Equality functions to compare node trees.
   5  *
   6  * NOTE: we currently support comparing all node types found in parse
   7  * trees.  We do not support comparing executor state trees; there
   8  * is no need for that, and no point in maintaining all the code that
   9  * would be needed.  We also do not support comparing Path trees, mainly
  10  * because the circular linkages between RelOptInfo and Path nodes can't
  11  * be handled easily in a simple depth-first traversal.
  12  *
  13  * Currently, in fact, equal() doesn't know how to compare Plan trees
  14  * either.      This might need to be fixed someday.
  15  *
  16  * NOTE: it is intentional that parse location fields (in nodes that have
  17  * one) are not compared.  This is because we want, for example, a variable
  18  * "x" to be considered equal() to another reference to "x" in the query.
  19  *
  20  *
  21  * Portions Copyright (c) 1996-2011, PostgreSQL Global Development Group
  22  * Portions Copyright (c) 1994, Regents of the University of California
  23  *
  24  * IDENTIFICATION
  25  *        src/backend/nodes/equalfuncs.c
  26  *
  27  *-------------------------------------------------------------------------
  28  */
  29
  30 #include "postgres.h"
  31
  32 #include "nodes/relation.h"
  33 #include "utils/datum.h"
  34
  35
  36 /*
  37  * Macros to simplify comparison of different kinds of fields.  Use these
  38  * wherever possible to reduce the chance for silly typos.      Note that these
  39  * hard-wire the convention that the local variables in an Equal routine are
  40  * named 'a' and 'b'.
  41  */
  42
  43 /* Compare a simple scalar field (int, float, bool, enum, etc) */
  44 #define COMPARE_SCALAR_FIELD(fldname) \
  45         do { \
  46                 if (a->fldname != b->fldname) \
  47                         return false; \
  48         } while (0)
  49
  50 /* Compare a field that is a pointer to some kind of Node or Node tree */
  51 #define COMPARE_NODE_FIELD(fldname) \
  52         do { \
  53                 if (!equal(a->fldname, b->fldname)) \
  54                         return false; \
  55         } while (0)
  56
  57 /* Compare a field that is a pointer to a Bitmapset */
  58 #define COMPARE_BITMAPSET_FIELD(fldname) \
  59         do { \
  60                 if (!bms_equal(a->fldname, b->fldname)) \
  61                         return false; \
  62         } while (0)
  63
  64 /* Compare a field that is a pointer to a C string, or perhaps NULL */
  65 #define COMPARE_STRING_FIELD(fldname) \
  66         do { \
  67                 if (!equalstr(a->fldname, b->fldname)) \
  68                         return false; \
  69         } while (0)
  70
  71 /* Macro for comparing string fields that might be NULL */
  72 #define equalstr(a, b)  \
  73         (((a) != NULL && (b) != NULL) ? (strcmp(a, b) == 0) : (a) == (b))
  74
  75 /* Compare a field that is a pointer to a simple palloc'd object of size sz */
  76 #define COMPARE_POINTER_FIELD(fldname, sz) \
  77         do { \
  78                 if (memcmp(a->fldname, b->fldname, (sz)) != 0) \
  79                         return false; \
  80         } while (0)
  81
  82 /* Compare a parse location field (this is a no-op, per note above) */
  83 #define COMPARE_LOCATION_FIELD(fldname) \
  84         ((void) 0)
  85
  86
  87 /*
  88  *      Stuff from primnodes.h
  89  */
  90
  91 static bool
  92 _equalAlias(const Alias *a, const Alias *b)
  93 {
  94         COMPARE_STRING_FIELD(aliasname);
  95         COMPARE_NODE_FIELD(colnames);
  96
  97         return true;
  98 }
  99
 100 static bool
 101 _equalRangeVar(const RangeVar *a, const RangeVar *b)
 102 {
 103         COMPARE_STRING_FIELD(catalogname);
 104         COMPARE_STRING_FIELD(schemaname);
 105         COMPARE_STRING_FIELD(relname);
 106         COMPARE_SCALAR_FIELD(inhOpt);
 107         COMPARE_SCALAR_FIELD(relpersistence);
 108         COMPARE_NODE_FIELD(alias);
 109         COMPARE_LOCATION_FIELD(location);
 110
 111         return true;
 112 }
 113
 114 static bool
 115 _equalIntoClause(const IntoClause *a, const IntoClause *b)
 116 {
 117         COMPARE_NODE_FIELD(rel);
 118         COMPARE_NODE_FIELD(colNames);
 119         COMPARE_NODE_FIELD(options);
 120         COMPARE_SCALAR_FIELD(onCommit);
 121         COMPARE_STRING_FIELD(tableSpaceName);
 122         COMPARE_SCALAR_FIELD(skipData);
 123
 124         return true;
 125 }
 126
 127 /*
 128  * We don't need an _equalExpr because Expr is an abstract supertype which
 129  * should never actually get instantiated.      Also, since it has no common
 130  * fields except NodeTag, there's no need for a helper routine to factor
 131  * out comparing the common fields...
 132  */
 133
 134 static bool
 135 _equalVar(const Var *a, const Var *b)
 136 {
 137         COMPARE_SCALAR_FIELD(varno);
 138         COMPARE_SCALAR_FIELD(varattno);
 139         COMPARE_SCALAR_FIELD(vartype);
 140         COMPARE_SCALAR_FIELD(vartypmod);
 141         COMPARE_SCALAR_FIELD(varcollid);
 142         COMPARE_SCALAR_FIELD(varlevelsup);
 143         COMPARE_SCALAR_FIELD(varnoold);
 144         COMPARE_SCALAR_FIELD(varoattno);
 145         COMPARE_LOCATION_FIELD(location);
 146
 147         return true;
 148 }
 149
 150 static bool
 151 _equalConst(const Const *a, const Const *b)
 152 {
 153         COMPARE_SCALAR_FIELD(consttype);
 154         COMPARE_SCALAR_FIELD(consttypmod);
 155         COMPARE_SCALAR_FIELD(constcollid);
 156         COMPARE_SCALAR_FIELD(constlen);
 157         COMPARE_SCALAR_FIELD(constisnull);
 158         COMPARE_SCALAR_FIELD(constbyval);
 159         COMPARE_LOCATION_FIELD(location);
 160
 161         /*
 162          * We treat all NULL constants of the same type as equal. Someday this
 163          * might need to change?  But datumIsEqual doesn't work on nulls, so...
 164          */
 165         if (a->constisnull)
 166                 return true;
 167         return datumIsEqual(a->constvalue, b->constvalue,
 168                                                 a->constbyval, a->constlen);
 169 }
 170
 171 static bool
 172 _equalParam(const Param *a, const Param *b)
 173 {
 174         COMPARE_SCALAR_FIELD(paramkind);
 175         COMPARE_SCALAR_FIELD(paramid);
 176         COMPARE_SCALAR_FIELD(paramtype);
 177         COMPARE_SCALAR_FIELD(paramtypmod);
 178         COMPARE_SCALAR_FIELD(paramcollid);
 179         COMPARE_LOCATION_FIELD(location);
 180
 181         return true;
 182 }
 183
 184 static bool
 185 _equalAggref(const Aggref *a, const Aggref *b)
 186 {
 187         COMPARE_SCALAR_FIELD(aggfnoid);
 188         COMPARE_SCALAR_FIELD(aggtype);
 189         COMPARE_SCALAR_FIELD(aggcollid);
 190         COMPARE_SCALAR_FIELD(inputcollid);
 191         COMPARE_NODE_FIELD(args);
 192         COMPARE_NODE_FIELD(aggorder);
 193         COMPARE_NODE_FIELD(aggdistinct);
 194         COMPARE_SCALAR_FIELD(aggstar);
 195         COMPARE_SCALAR_FIELD(agglevelsup);
 196         COMPARE_LOCATION_FIELD(location);
 197
 198         return true;
 199 }
 200
 201 static bool
 202 _equalWindowFunc(const WindowFunc *a, const WindowFunc *b)
 203 {
 204         COMPARE_SCALAR_FIELD(winfnoid);
 205         COMPARE_SCALAR_FIELD(wintype);
 206         COMPARE_SCALAR_FIELD(wincollid);
 207         COMPARE_SCALAR_FIELD(inputcollid);
 208         COMPARE_NODE_FIELD(args);
 209         COMPARE_SCALAR_FIELD(winref);
 210         COMPARE_SCALAR_FIELD(winstar);
 211         COMPARE_SCALAR_FIELD(winagg);
 212         COMPARE_LOCATION_FIELD(location);
 213
 214         return true;
 215 }
 216
 217 static bool
 218 _equalArrayRef(const ArrayRef *a, const ArrayRef *b)
 219 {
 220         COMPARE_SCALAR_FIELD(refarraytype);
 221         COMPARE_SCALAR_FIELD(refelemtype);
 222         COMPARE_SCALAR_FIELD(reftypmod);
 223         COMPARE_SCALAR_FIELD(refcollid);
 224         COMPARE_NODE_FIELD(refupperindexpr);
 225         COMPARE_NODE_FIELD(reflowerindexpr);
 226         COMPARE_NODE_FIELD(refexpr);
 227         COMPARE_NODE_FIELD(refassgnexpr);
 228
 229         return true;
 230 }
 231
 232 static bool
 233 _equalFuncExpr(const FuncExpr *a, const FuncExpr *b)
 234 {
 235         COMPARE_SCALAR_FIELD(funcid);
 236         COMPARE_SCALAR_FIELD(funcresulttype);
 237         COMPARE_SCALAR_FIELD(funcretset);
 238
 239         /*
 240          * Special-case COERCE_DONTCARE, so that planner can build coercion nodes
 241          * that are equal() to both explicit and implicit coercions.
 242          */
 243         if (a->funcformat != b->funcformat &&
 244                 a->funcformat != COERCE_DONTCARE &&
 245                 b->funcformat != COERCE_DONTCARE)
 246                 return false;
 247
 248         COMPARE_SCALAR_FIELD(funccollid);
 249         COMPARE_SCALAR_FIELD(inputcollid);
 250         COMPARE_NODE_FIELD(args);
 251         COMPARE_LOCATION_FIELD(location);
 252
 253         return true;
 254 }
 255
 256 static bool
 257 _equalNamedArgExpr(const NamedArgExpr *a, const NamedArgExpr *b)
 258 {
 259         COMPARE_NODE_FIELD(arg);
 260         COMPARE_STRING_FIELD(name);
 261         COMPARE_SCALAR_FIELD(argnumber);
 262         COMPARE_LOCATION_FIELD(location);
 263
 264         return true;
 265 }
 266
 267 static bool
 268 _equalOpExpr(const OpExpr *a, const OpExpr *b)
 269 {
 270         COMPARE_SCALAR_FIELD(opno);
 271
 272         /*
 273          * Special-case opfuncid: it is allowable for it to differ if one node
 274          * contains zero and the other doesn't.  This just means that the one node
 275          * isn't as far along in the parse/plan pipeline and hasn't had the
 276          * opfuncid cache filled yet.
 277          */
 278         if (a->opfuncid != b->opfuncid &&
 279                 a->opfuncid != 0 &&
 280                 b->opfuncid != 0)
 281                 return false;
 282
 283         COMPARE_SCALAR_FIELD(opresulttype);
 284         COMPARE_SCALAR_FIELD(opretset);
 285         COMPARE_SCALAR_FIELD(opcollid);
 286         COMPARE_SCALAR_FIELD(inputcollid);
 287         COMPARE_NODE_FIELD(args);
 288         COMPARE_LOCATION_FIELD(location);
 289
 290         return true;
 291 }
 292
 293 static bool
 294 _equalDistinctExpr(const DistinctExpr *a, const DistinctExpr *b)
 295 {
 296         COMPARE_SCALAR_FIELD(opno);
 297
 298         /*
 299          * Special-case opfuncid: it is allowable for it to differ if one node
 300          * contains zero and the other doesn't.  This just means that the one node
 301          * isn't as far along in the parse/plan pipeline and hasn't had the
 302          * opfuncid cache filled yet.
 303          */
 304         if (a->opfuncid != b->opfuncid &&
 305                 a->opfuncid != 0 &&
 306                 b->opfuncid != 0)
 307                 return false;
 308
 309         COMPARE_SCALAR_FIELD(opresulttype);
 310         COMPARE_SCALAR_FIELD(opretset);
 311         COMPARE_SCALAR_FIELD(opcollid);
 312         COMPARE_SCALAR_FIELD(inputcollid);
 313         COMPARE_NODE_FIELD(args);
 314         COMPARE_LOCATION_FIELD(location);
 315
 316         return true;
 317 }
 318
 319 static bool
 320 _equalNullIfExpr(const NullIfExpr *a, const NullIfExpr *b)
 321 {
 322         COMPARE_SCALAR_FIELD(opno);
 323
 324         /*
 325          * Special-case opfuncid: it is allowable for it to differ if one node
 326          * contains zero and the other doesn't.  This just means that the one node
 327          * isn't as far along in the parse/plan pipeline and hasn't had the
 328          * opfuncid cache filled yet.
 329          */
 330         if (a->opfuncid != b->opfuncid &&
 331                 a->opfuncid != 0 &&
 332                 b->opfuncid != 0)
 333                 return false;
 334
 335         COMPARE_SCALAR_FIELD(opresulttype);
 336         COMPARE_SCALAR_FIELD(opretset);
 337         COMPARE_SCALAR_FIELD(opcollid);
 338         COMPARE_SCALAR_FIELD(inputcollid);
 339         COMPARE_NODE_FIELD(args);
 340         COMPARE_LOCATION_FIELD(location);
 341
 342         return true;
 343 }
 344
 345 static bool
 346 _equalScalarArrayOpExpr(const ScalarArrayOpExpr *a, const ScalarArrayOpExpr *b)
 347 {
 348         COMPARE_SCALAR_FIELD(opno);
 349
 350         /*
 351          * Special-case opfuncid: it is allowable for it to differ if one node
 352          * contains zero and the other doesn't.  This just means that the one node
 353          * isn't as far along in the parse/plan pipeline and hasn't had the
 354          * opfuncid cache filled yet.
 355          */
 356         if (a->opfuncid != b->opfuncid &&
 357                 a->opfuncid != 0 &&
 358                 b->opfuncid != 0)
 359                 return false;
 360
 361         COMPARE_SCALAR_FIELD(useOr);
 362         COMPARE_SCALAR_FIELD(inputcollid);
 363         COMPARE_NODE_FIELD(args);
 364         COMPARE_LOCATION_FIELD(location);
 365
 366         return true;
 367 }
 368
 369 static bool
 370 _equalBoolExpr(const BoolExpr *a, const BoolExpr *b)
 371 {
 372         COMPARE_SCALAR_FIELD(boolop);
 373         COMPARE_NODE_FIELD(args);
 374         COMPARE_LOCATION_FIELD(location);
 375
 376         return true;
 377 }
 378
 379 static bool
 380 _equalSubLink(const SubLink *a, const SubLink *b)
 381 {
 382         COMPARE_SCALAR_FIELD(subLinkType);
 383         COMPARE_NODE_FIELD(testexpr);
 384         COMPARE_NODE_FIELD(operName);
 385         COMPARE_NODE_FIELD(subselect);
 386         COMPARE_LOCATION_FIELD(location);
 387
 388         return true;
 389 }
 390
 391 static bool
 392 _equalSubPlan(const SubPlan *a, const SubPlan *b)
 393 {
 394         COMPARE_SCALAR_FIELD(subLinkType);
 395         COMPARE_NODE_FIELD(testexpr);
 396         COMPARE_NODE_FIELD(paramIds);
 397         COMPARE_SCALAR_FIELD(plan_id);
 398         COMPARE_STRING_FIELD(plan_name);
 399         COMPARE_SCALAR_FIELD(firstColType);
 400         COMPARE_SCALAR_FIELD(firstColTypmod);
 401         COMPARE_SCALAR_FIELD(firstColCollation);
 402         COMPARE_SCALAR_FIELD(useHashTable);
 403         COMPARE_SCALAR_FIELD(unknownEqFalse);
 404         COMPARE_NODE_FIELD(setParam);
 405         COMPARE_NODE_FIELD(parParam);
 406         COMPARE_NODE_FIELD(args);
 407         COMPARE_SCALAR_FIELD(startup_cost);
 408         COMPARE_SCALAR_FIELD(per_call_cost);
 409
 410         return true;
 411 }
 412
 413 static bool
 414 _equalAlternativeSubPlan(const AlternativeSubPlan *a, const AlternativeSubPlan *b)
 415 {
 416         COMPARE_NODE_FIELD(subplans);
 417
 418         return true;
 419 }
 420
 421 static bool
 422 _equalFieldSelect(const FieldSelect *a, const FieldSelect *b)
 423 {
 424         COMPARE_NODE_FIELD(arg);
 425         COMPARE_SCALAR_FIELD(fieldnum);
 426         COMPARE_SCALAR_FIELD(resulttype);
 427         COMPARE_SCALAR_FIELD(resulttypmod);
 428         COMPARE_SCALAR_FIELD(resultcollid);
 429
 430         return true;
 431 }
 432
 433 static bool
 434 _equalFieldStore(const FieldStore *a, const FieldStore *b)
 435 {
 436         COMPARE_NODE_FIELD(arg);
 437         COMPARE_NODE_FIELD(newvals);
 438         COMPARE_NODE_FIELD(fieldnums);
 439         COMPARE_SCALAR_FIELD(resulttype);
 440
 441         return true;
 442 }
 443
 444 static bool
 445 _equalRelabelType(const RelabelType *a, const RelabelType *b)
 446 {
 447         COMPARE_NODE_FIELD(arg);
 448         COMPARE_SCALAR_FIELD(resulttype);
 449         COMPARE_SCALAR_FIELD(resulttypmod);
 450         COMPARE_SCALAR_FIELD(resultcollid);
 451
 452         /*
 453          * Special-case COERCE_DONTCARE, so that planner can build coercion nodes
 454          * that are equal() to both explicit and implicit coercions.
 455          */
 456         if (a->relabelformat != b->relabelformat &&
 457                 a->relabelformat != COERCE_DONTCARE &&
 458                 b->relabelformat != COERCE_DONTCARE)
 459                 return false;
 460
 461         COMPARE_LOCATION_FIELD(location);
 462
 463         return true;
 464 }
 465
 466 static bool
 467 _equalCoerceViaIO(const CoerceViaIO *a, const CoerceViaIO *b)
 468 {
 469         COMPARE_NODE_FIELD(arg);
 470         COMPARE_SCALAR_FIELD(resulttype);
 471         COMPARE_SCALAR_FIELD(resultcollid);
 472
 473         /*
 474          * Special-case COERCE_DONTCARE, so that planner can build coercion nodes
 475          * that are equal() to both explicit and implicit coercions.
 476          */
 477         if (a->coerceformat != b->coerceformat &&
 478                 a->coerceformat != COERCE_DONTCARE &&
 479                 b->coerceformat != COERCE_DONTCARE)
 480                 return false;
 481
 482         COMPARE_LOCATION_FIELD(location);
 483
 484         return true;
 485 }
 486
 487 static bool
 488 _equalArrayCoerceExpr(const ArrayCoerceExpr *a, const ArrayCoerceExpr *b)
 489 {
 490         COMPARE_NODE_FIELD(arg);
 491         COMPARE_SCALAR_FIELD(elemfuncid);
 492         COMPARE_SCALAR_FIELD(resulttype);
 493         COMPARE_SCALAR_FIELD(resulttypmod);
 494         COMPARE_SCALAR_FIELD(resultcollid);
 495         COMPARE_SCALAR_FIELD(isExplicit);
 496
 497         /*
 498          * Special-case COERCE_DONTCARE, so that planner can build coercion nodes
 499          * that are equal() to both explicit and implicit coercions.
 500          */
 501         if (a->coerceformat != b->coerceformat &&
 502                 a->coerceformat != COERCE_DONTCARE &&
 503                 b->coerceformat != COERCE_DONTCARE)
 504                 return false;
 505
 506         COMPARE_LOCATION_FIELD(location);
 507
 508         return true;
 509 }
 510
 511 static bool
 512 _equalConvertRowtypeExpr(const ConvertRowtypeExpr *a, const ConvertRowtypeExpr *b)
 513 {
 514         COMPARE_NODE_FIELD(arg);
 515         COMPARE_SCALAR_FIELD(resulttype);
 516
 517         /*
 518          * Special-case COERCE_DONTCARE, so that planner can build coercion nodes
 519          * that are equal() to both explicit and implicit coercions.
 520          */
 521         if (a->convertformat != b->convertformat &&
 522                 a->convertformat != COERCE_DONTCARE &&
 523                 b->convertformat != COERCE_DONTCARE)
 524                 return false;
 525
 526         COMPARE_LOCATION_FIELD(location);
 527
 528         return true;
 529 }
 530
 531 static bool
 532 _equalCollateExpr(const CollateExpr *a, const CollateExpr *b)
 533 {
 534         COMPARE_NODE_FIELD(arg);
 535         COMPARE_SCALAR_FIELD(collOid);
 536         COMPARE_LOCATION_FIELD(location);
 537
 538         return true;
 539 }
 540
 541 static bool
 542 _equalCaseExpr(const CaseExpr *a, const CaseExpr *b)
 543 {
 544         COMPARE_SCALAR_FIELD(casetype);
 545         COMPARE_SCALAR_FIELD(casecollid);
 546         COMPARE_NODE_FIELD(arg);
 547         COMPARE_NODE_FIELD(args);
 548         COMPARE_NODE_FIELD(defresult);
 549         COMPARE_LOCATION_FIELD(location);
 550
 551         return true;
 552 }
 553
 554 static bool
 555 _equalCaseWhen(const CaseWhen *a, const CaseWhen *b)
 556 {
 557         COMPARE_NODE_FIELD(expr);
 558         COMPARE_NODE_FIELD(result);
 559         COMPARE_LOCATION_FIELD(location);
 560
 561         return true;
 562 }
 563
 564 static bool
 565 _equalCaseTestExpr(const CaseTestExpr *a, const CaseTestExpr *b)
 566 {
 567         COMPARE_SCALAR_FIELD(typeId);
 568         COMPARE_SCALAR_FIELD(typeMod);
 569         COMPARE_SCALAR_FIELD(collation);
 570
 571         return true;
 572 }
 573
 574 static bool
 575 _equalArrayExpr(const ArrayExpr *a, const ArrayExpr *b)
 576 {
 577         COMPARE_SCALAR_FIELD(array_typeid);
 578         COMPARE_SCALAR_FIELD(array_collid);
 579         COMPARE_SCALAR_FIELD(element_typeid);
 580         COMPARE_NODE_FIELD(elements);
 581         COMPARE_SCALAR_FIELD(multidims);
 582         COMPARE_LOCATION_FIELD(location);
 583
 584         return true;
 585 }
 586
 587 static bool
 588 _equalRowExpr(const RowExpr *a, const RowExpr *b)
 589 {
 590         COMPARE_NODE_FIELD(args);
 591         COMPARE_SCALAR_FIELD(row_typeid);
 592
 593         /*
 594          * Special-case COERCE_DONTCARE, so that planner can build coercion nodes
 595          * that are equal() to both explicit and implicit coercions.
 596          */
 597         if (a->row_format != b->row_format &&
 598                 a->row_format != COERCE_DONTCARE &&
 599                 b->row_format != COERCE_DONTCARE)
 600                 return false;
 601
 602         COMPARE_NODE_FIELD(colnames);
 603         COMPARE_LOCATION_FIELD(location);
 604
 605         return true;
 606 }
 607
 608 static bool
 609 _equalRowCompareExpr(const RowCompareExpr *a, const RowCompareExpr *b)
 610 {
 611         COMPARE_SCALAR_FIELD(rctype);
 612         COMPARE_NODE_FIELD(opnos);
 613         COMPARE_NODE_FIELD(opfamilies);
 614         COMPARE_NODE_FIELD(inputcollids);
 615         COMPARE_NODE_FIELD(largs);
 616         COMPARE_NODE_FIELD(rargs);
 617
 618         return true;
 619 }
 620
 621 static bool
 622 _equalCoalesceExpr(const CoalesceExpr *a, const CoalesceExpr *b)
 623 {
 624         COMPARE_SCALAR_FIELD(coalescetype);
 625         COMPARE_SCALAR_FIELD(coalescecollid);
 626         COMPARE_NODE_FIELD(args);
 627         COMPARE_LOCATION_FIELD(location);
 628
 629         return true;
 630 }
 631
 632 static bool
 633 _equalMinMaxExpr(const MinMaxExpr *a, const MinMaxExpr *b)
 634 {
 635         COMPARE_SCALAR_FIELD(minmaxtype);
 636         COMPARE_SCALAR_FIELD(minmaxcollid);
 637         COMPARE_SCALAR_FIELD(inputcollid);
 638         COMPARE_SCALAR_FIELD(op);
 639         COMPARE_NODE_FIELD(args);
 640         COMPARE_LOCATION_FIELD(location);
 641
 642         return true;
 643 }
 644
 645 static bool
 646 _equalXmlExpr(const XmlExpr *a, const XmlExpr *b)
 647 {
 648         COMPARE_SCALAR_FIELD(op);
 649         COMPARE_STRING_FIELD(name);
 650         COMPARE_NODE_FIELD(named_args);
 651         COMPARE_NODE_FIELD(arg_names);
 652         COMPARE_NODE_FIELD(args);
 653         COMPARE_SCALAR_FIELD(xmloption);
 654         COMPARE_SCALAR_FIELD(type);
 655         COMPARE_SCALAR_FIELD(typmod);
 656         COMPARE_LOCATION_FIELD(location);
 657
 658         return true;
 659 }
 660
 661 static bool
 662 _equalNullTest(const NullTest *a, const NullTest *b)
 663 {
 664         COMPARE_NODE_FIELD(arg);
 665         COMPARE_SCALAR_FIELD(nulltesttype);
 666         COMPARE_SCALAR_FIELD(argisrow);
 667
 668         return true;
 669 }
 670
 671 static bool
 672 _equalBooleanTest(const BooleanTest *a, const BooleanTest *b)
 673 {
 674         COMPARE_NODE_FIELD(arg);
 675         COMPARE_SCALAR_FIELD(booltesttype);
 676
 677         return true;
 678 }
 679
 680 static bool
 681 _equalCoerceToDomain(const CoerceToDomain *a, const CoerceToDomain *b)
 682 {
 683         COMPARE_NODE_FIELD(arg);
 684         COMPARE_SCALAR_FIELD(resulttype);
 685         COMPARE_SCALAR_FIELD(resulttypmod);
 686         COMPARE_SCALAR_FIELD(resultcollid);
 687
 688         /*
 689          * Special-case COERCE_DONTCARE, so that planner can build coercion nodes
 690          * that are equal() to both explicit and implicit coercions.
 691          */
 692         if (a->coercionformat != b->coercionformat &&
 693                 a->coercionformat != COERCE_DONTCARE &&
 694                 b->coercionformat != COERCE_DONTCARE)
 695                 return false;
 696
 697         COMPARE_LOCATION_FIELD(location);
 698
 699         return true;
 700 }
 701
 702 static bool
 703 _equalCoerceToDomainValue(const CoerceToDomainValue *a, const CoerceToDomainValue *b)
 704 {
 705         COMPARE_SCALAR_FIELD(typeId);
 706         COMPARE_SCALAR_FIELD(typeMod);
 707         COMPARE_SCALAR_FIELD(collation);
 708         COMPARE_LOCATION_FIELD(location);
 709
 710         return true;
 711 }
 712
 713 static bool
 714 _equalSetToDefault(const SetToDefault *a, const SetToDefault *b)
 715 {
 716         COMPARE_SCALAR_FIELD(typeId);
 717         COMPARE_SCALAR_FIELD(typeMod);
 718         COMPARE_SCALAR_FIELD(collation);
 719         COMPARE_LOCATION_FIELD(location);
 720
 721         return true;
 722 }
 723
 724 static bool
 725 _equalCurrentOfExpr(const CurrentOfExpr *a, const CurrentOfExpr *b)
 726 {
 727         COMPARE_SCALAR_FIELD(cvarno);
 728         COMPARE_STRING_FIELD(cursor_name);
 729         COMPARE_SCALAR_FIELD(cursor_param);
 730
 731         return true;
 732 }
 733
 734 static bool
 735 _equalTargetEntry(const TargetEntry *a, const TargetEntry *b)
 736 {
 737         COMPARE_NODE_FIELD(expr);
 738         COMPARE_SCALAR_FIELD(resno);
 739         COMPARE_STRING_FIELD(resname);
 740         COMPARE_SCALAR_FIELD(ressortgroupref);
 741         COMPARE_SCALAR_FIELD(resorigtbl);
 742         COMPARE_SCALAR_FIELD(resorigcol);
 743         COMPARE_SCALAR_FIELD(resjunk);
 744
 745         return true;
 746 }
 747
 748 static bool
 749 _equalRangeTblRef(const RangeTblRef *a, const RangeTblRef *b)
 750 {
 751         COMPARE_SCALAR_FIELD(rtindex);
 752
 753         return true;
 754 }
 755
 756 static bool
 757 _equalJoinExpr(const JoinExpr *a, const JoinExpr *b)
 758 {
 759         COMPARE_SCALAR_FIELD(jointype);
 760         COMPARE_SCALAR_FIELD(isNatural);
 761         COMPARE_NODE_FIELD(larg);
 762         COMPARE_NODE_FIELD(rarg);
 763         COMPARE_NODE_FIELD(usingClause);
 764         COMPARE_NODE_FIELD(quals);
 765         COMPARE_NODE_FIELD(alias);
 766         COMPARE_SCALAR_FIELD(rtindex);
 767
 768         return true;
 769 }
 770
 771 static bool
 772 _equalFromExpr(const FromExpr *a, const FromExpr *b)
 773 {
 774         COMPARE_NODE_FIELD(fromlist);
 775         COMPARE_NODE_FIELD(quals);
 776
 777         return true;
 778 }
 779
 780
 781 /*
 782  * Stuff from relation.h
 783  */
 784
 785 static bool
 786 _equalPathKey(const PathKey *a, const PathKey *b)
 787 {
 788         /*
 789          * This is normally used on non-canonicalized PathKeys, so must chase up
 790          * to the topmost merged EquivalenceClass and see if those are the same
 791          * (by pointer equality).
 792          */
 793         EquivalenceClass *a_eclass;
 794         EquivalenceClass *b_eclass;
 795
 796         a_eclass = a->pk_eclass;
 797         while (a_eclass->ec_merged)
 798                 a_eclass = a_eclass->ec_merged;
 799         b_eclass = b->pk_eclass;
 800         while (b_eclass->ec_merged)
 801                 b_eclass = b_eclass->ec_merged;
 802         if (a_eclass != b_eclass)
 803                 return false;
 804         COMPARE_SCALAR_FIELD(pk_opfamily);
 805         COMPARE_SCALAR_FIELD(pk_strategy);
 806         COMPARE_SCALAR_FIELD(pk_nulls_first);
 807
 808         return true;
 809 }
 810
 811 static bool
 812 _equalRestrictInfo(const RestrictInfo *a, const RestrictInfo *b)
 813 {
 814         COMPARE_NODE_FIELD(clause);
 815         COMPARE_SCALAR_FIELD(is_pushed_down);
 816         COMPARE_SCALAR_FIELD(outerjoin_delayed);
 817         COMPARE_BITMAPSET_FIELD(required_relids);
 818         COMPARE_BITMAPSET_FIELD(nullable_relids);
 819
 820         /*
 821          * We ignore all the remaining fields, since they may not be set yet, and
 822          * should be derivable from the clause anyway.
 823          */
 824
 825         return true;
 826 }
 827
 828 static bool
 829 _equalPlaceHolderVar(const PlaceHolderVar *a, const PlaceHolderVar *b)
 830 {
 831         /*
 832          * We intentionally do not compare phexpr.      Two PlaceHolderVars with the
 833          * same ID and levelsup should be considered equal even if the contained
 834          * expressions have managed to mutate to different states.      One way in
 835          * which that can happen is that initplan sublinks would get replaced by
 836          * differently-numbered Params when sublink folding is done.  (The end
 837          * result of such a situation would be some unreferenced initplans, which
 838          * is annoying but not really a problem.)
 839          *
 840          * COMPARE_NODE_FIELD(phexpr);
 841          */
 842         COMPARE_BITMAPSET_FIELD(phrels);
 843         COMPARE_SCALAR_FIELD(phid);
 844         COMPARE_SCALAR_FIELD(phlevelsup);
 845
 846         return true;
 847 }
 848
 849 static bool
 850 _equalSpecialJoinInfo(const SpecialJoinInfo *a, const SpecialJoinInfo *b)
 851 {
 852         COMPARE_BITMAPSET_FIELD(min_lefthand);
 853         COMPARE_BITMAPSET_FIELD(min_righthand);
 854         COMPARE_BITMAPSET_FIELD(syn_lefthand);
 855         COMPARE_BITMAPSET_FIELD(syn_righthand);
 856         COMPARE_SCALAR_FIELD(jointype);
 857         COMPARE_SCALAR_FIELD(lhs_strict);
 858         COMPARE_SCALAR_FIELD(delay_upper_joins);
 859         COMPARE_NODE_FIELD(join_quals);
 860
 861         return true;
 862 }
 863
 864 static bool
 865 _equalAppendRelInfo(const AppendRelInfo *a, const AppendRelInfo *b)
 866 {
 867         COMPARE_SCALAR_FIELD(parent_relid);
 868         COMPARE_SCALAR_FIELD(child_relid);
 869         COMPARE_SCALAR_FIELD(parent_reltype);
 870         COMPARE_SCALAR_FIELD(child_reltype);
 871         COMPARE_NODE_FIELD(translated_vars);
 872         COMPARE_SCALAR_FIELD(parent_reloid);
 873
 874         return true;
 875 }
 876
 877 static bool
 878 _equalPlaceHolderInfo(const PlaceHolderInfo *a, const PlaceHolderInfo *b)
 879 {
 880         COMPARE_SCALAR_FIELD(phid);
 881         COMPARE_NODE_FIELD(ph_var);
 882         COMPARE_BITMAPSET_FIELD(ph_eval_at);
 883         COMPARE_BITMAPSET_FIELD(ph_needed);
 884         COMPARE_BITMAPSET_FIELD(ph_may_need);
 885         COMPARE_SCALAR_FIELD(ph_width);
 886
 887         return true;
 888 }
 889
 890
 891 /*
 892  * Stuff from parsenodes.h
 893  */
 894
 895 static bool
 896 _equalQuery(const Query *a, const Query *b)
 897 {
 898         COMPARE_SCALAR_FIELD(commandType);
 899         COMPARE_SCALAR_FIELD(querySource);
 900         COMPARE_SCALAR_FIELD(canSetTag);
 901         COMPARE_NODE_FIELD(utilityStmt);
 902         COMPARE_SCALAR_FIELD(resultRelation);
 903         COMPARE_NODE_FIELD(intoClause);
 904         COMPARE_SCALAR_FIELD(hasAggs);
 905         COMPARE_SCALAR_FIELD(hasWindowFuncs);
 906         COMPARE_SCALAR_FIELD(hasSubLinks);
 907         COMPARE_SCALAR_FIELD(hasDistinctOn);
 908         COMPARE_SCALAR_FIELD(hasRecursive);
 909         COMPARE_SCALAR_FIELD(hasModifyingCTE);
 910         COMPARE_SCALAR_FIELD(hasForUpdate);
 911         COMPARE_NODE_FIELD(cteList);
 912         COMPARE_NODE_FIELD(rtable);
 913         COMPARE_NODE_FIELD(jointree);
 914         COMPARE_NODE_FIELD(targetList);
 915         COMPARE_NODE_FIELD(returningList);
 916         COMPARE_NODE_FIELD(groupClause);
 917         COMPARE_NODE_FIELD(havingQual);
 918         COMPARE_NODE_FIELD(windowClause);
 919         COMPARE_NODE_FIELD(distinctClause);
 920         COMPARE_NODE_FIELD(sortClause);
 921         COMPARE_NODE_FIELD(limitOffset);
 922         COMPARE_NODE_FIELD(limitCount);
 923         COMPARE_NODE_FIELD(rowMarks);
 924         COMPARE_NODE_FIELD(setOperations);
 925         COMPARE_NODE_FIELD(constraintDeps);
 926
 927         return true;
 928 }
 929
 930 static bool
 931 _equalInsertStmt(const InsertStmt *a, const InsertStmt *b)
 932 {
 933         COMPARE_NODE_FIELD(relation);
 934         COMPARE_NODE_FIELD(cols);
 935         COMPARE_NODE_FIELD(selectStmt);
 936         COMPARE_NODE_FIELD(returningList);
 937         COMPARE_NODE_FIELD(withClause);
 938
 939         return true;
 940 }
 941
 942 static bool
 943 _equalDeleteStmt(const DeleteStmt *a, const DeleteStmt *b)
 944 {
 945         COMPARE_NODE_FIELD(relation);
 946         COMPARE_NODE_FIELD(usingClause);
 947         COMPARE_NODE_FIELD(whereClause);
 948         COMPARE_NODE_FIELD(returningList);
 949         COMPARE_NODE_FIELD(withClause);
 950
 951         return true;
 952 }
 953
 954 static bool
 955 _equalUpdateStmt(const UpdateStmt *a, const UpdateStmt *b)
 956 {
 957         COMPARE_NODE_FIELD(relation);
 958         COMPARE_NODE_FIELD(targetList);
 959         COMPARE_NODE_FIELD(whereClause);
 960         COMPARE_NODE_FIELD(fromClause);
 961         COMPARE_NODE_FIELD(returningList);
 962         COMPARE_NODE_FIELD(withClause);
 963
 964         return true;
 965 }
 966
 967 static bool
 968 _equalSelectStmt(const SelectStmt *a, const SelectStmt *b)
 969 {
 970         COMPARE_NODE_FIELD(distinctClause);
 971         COMPARE_NODE_FIELD(intoClause);
 972         COMPARE_NODE_FIELD(targetList);
 973         COMPARE_NODE_FIELD(fromClause);
 974         COMPARE_NODE_FIELD(whereClause);
 975         COMPARE_NODE_FIELD(groupClause);
 976         COMPARE_NODE_FIELD(havingClause);
 977         COMPARE_NODE_FIELD(windowClause);
 978         COMPARE_NODE_FIELD(withClause);
 979         COMPARE_NODE_FIELD(valuesLists);
 980         COMPARE_NODE_FIELD(sortClause);
 981         COMPARE_NODE_FIELD(limitOffset);
 982         COMPARE_NODE_FIELD(limitCount);
 983         COMPARE_NODE_FIELD(lockingClause);
 984         COMPARE_SCALAR_FIELD(op);
 985         COMPARE_SCALAR_FIELD(all);
 986         COMPARE_NODE_FIELD(larg);
 987         COMPARE_NODE_FIELD(rarg);
 988
 989         return true;
 990 }
 991
 992 static bool
 993 _equalSetOperationStmt(const SetOperationStmt *a, const SetOperationStmt *b)
 994 {
 995         COMPARE_SCALAR_FIELD(op);
 996         COMPARE_SCALAR_FIELD(all);
 997         COMPARE_NODE_FIELD(larg);
 998         COMPARE_NODE_FIELD(rarg);
 999         COMPARE_NODE_FIELD(colTypes);
1000         COMPARE_NODE_FIELD(colTypmods);
1001         COMPARE_NODE_FIELD(colCollations);
1002         COMPARE_NODE_FIELD(groupClauses);
1003
1004         return true;
1005 }
1006
1007 static bool
1008 _equalAlterTableStmt(const AlterTableStmt *a, const AlterTableStmt *b)
1009 {
1010         COMPARE_NODE_FIELD(relation);
1011         COMPARE_NODE_FIELD(cmds);
1012         COMPARE_SCALAR_FIELD(relkind);
1013
1014         return true;
1015 }
1016
1017 static bool
1018 _equalAlterTableCmd(const AlterTableCmd *a, const AlterTableCmd *b)
1019 {
1020         COMPARE_SCALAR_FIELD(subtype);
1021         COMPARE_STRING_FIELD(name);
1022         COMPARE_NODE_FIELD(def);
1023         COMPARE_SCALAR_FIELD(behavior);
1024         COMPARE_SCALAR_FIELD(missing_ok);
1025
1026         return true;
1027 }
1028
1029 static bool
1030 _equalAlterDomainStmt(const AlterDomainStmt *a, const AlterDomainStmt *b)
1031 {
1032         COMPARE_SCALAR_FIELD(subtype);
1033         COMPARE_NODE_FIELD(typeName);
1034         COMPARE_STRING_FIELD(name);
1035         COMPARE_NODE_FIELD(def);
1036         COMPARE_SCALAR_FIELD(behavior);
1037
1038         return true;
1039 }
1040
1041 static bool
1042 _equalGrantStmt(const GrantStmt *a, const GrantStmt *b)
1043 {
1044         COMPARE_SCALAR_FIELD(is_grant);
1045         COMPARE_SCALAR_FIELD(targtype);
1046         COMPARE_SCALAR_FIELD(objtype);
1047         COMPARE_NODE_FIELD(objects);
1048         COMPARE_NODE_FIELD(privileges);
1049         COMPARE_NODE_FIELD(grantees);
1050         COMPARE_SCALAR_FIELD(grant_option);
1051         COMPARE_SCALAR_FIELD(behavior);
1052
1053         return true;
1054 }
1055
1056 static bool
1057 _equalPrivGrantee(const PrivGrantee *a, const PrivGrantee *b)
1058 {
1059         COMPARE_STRING_FIELD(rolname);
1060
1061         return true;
1062 }
1063
1064 static bool
1065 _equalFuncWithArgs(const FuncWithArgs *a, const FuncWithArgs *b)
1066 {
1067         COMPARE_NODE_FIELD(funcname);
1068         COMPARE_NODE_FIELD(funcargs);
1069
1070         return true;
1071 }
1072
1073 static bool
1074 _equalAccessPriv(const AccessPriv *a, const AccessPriv *b)
1075 {
1076         COMPARE_STRING_FIELD(priv_name);
1077         COMPARE_NODE_FIELD(cols);
1078
1079         return true;
1080 }
1081
1082 static bool
1083 _equalGrantRoleStmt(const GrantRoleStmt *a, const GrantRoleStmt *b)
1084 {
1085         COMPARE_NODE_FIELD(granted_roles);
1086         COMPARE_NODE_FIELD(grantee_roles);
1087         COMPARE_SCALAR_FIELD(is_grant);
1088         COMPARE_SCALAR_FIELD(admin_opt);
1089         COMPARE_STRING_FIELD(grantor);
1090         COMPARE_SCALAR_FIELD(behavior);
1091
1092         return true;
1093 }
1094
1095 static bool
1096 _equalAlterDefaultPrivilegesStmt(const AlterDefaultPrivilegesStmt *a, const AlterDefaultPrivilegesStmt *b)
1097 {
1098         COMPARE_NODE_FIELD(options);
1099         COMPARE_NODE_FIELD(action);
1100
1101         return true;
1102 }
1103
1104 static bool
1105 _equalDeclareCursorStmt(const DeclareCursorStmt *a, const DeclareCursorStmt *b)
1106 {
1107         COMPARE_STRING_FIELD(portalname);
1108         COMPARE_SCALAR_FIELD(options);
1109         COMPARE_NODE_FIELD(query);
1110
1111         return true;
1112 }
1113
1114 static bool
1115 _equalClosePortalStmt(const ClosePortalStmt *a, const ClosePortalStmt *b)
1116 {
1117         COMPARE_STRING_FIELD(portalname);
1118
1119         return true;
1120 }
1121
1122 static bool
1123 _equalClusterStmt(const ClusterStmt *a, const ClusterStmt *b)
1124 {
1125         COMPARE_NODE_FIELD(relation);
1126         COMPARE_STRING_FIELD(indexname);
1127         COMPARE_SCALAR_FIELD(verbose);
1128
1129         return true;
1130 }
1131
1132 static bool
1133 _equalCopyStmt(const CopyStmt *a, const CopyStmt *b)
1134 {
1135         COMPARE_NODE_FIELD(relation);
1136         COMPARE_NODE_FIELD(query);
1137         COMPARE_NODE_FIELD(attlist);
1138         COMPARE_SCALAR_FIELD(is_from);
1139         COMPARE_STRING_FIELD(filename);
1140         COMPARE_NODE_FIELD(options);
1141
1142         return true;
1143 }
1144
1145 static bool
1146 _equalCreateStmt(const CreateStmt *a, const CreateStmt *b)
1147 {
1148         COMPARE_NODE_FIELD(relation);
1149         COMPARE_NODE_FIELD(tableElts);
1150         COMPARE_NODE_FIELD(inhRelations);
1151         COMPARE_NODE_FIELD(ofTypename);
1152         COMPARE_NODE_FIELD(constraints);
1153         COMPARE_NODE_FIELD(options);
1154         COMPARE_SCALAR_FIELD(oncommit);
1155         COMPARE_STRING_FIELD(tablespacename);
1156         COMPARE_SCALAR_FIELD(if_not_exists);
1157
1158         return true;
1159 }
1160
1161 static bool
1162 _equalInhRelation(const InhRelation *a, const InhRelation *b)
1163 {
1164         COMPARE_NODE_FIELD(relation);
1165         COMPARE_SCALAR_FIELD(options);
1166
1167         return true;
1168 }
1169
1170 static bool
1171 _equalDefineStmt(const DefineStmt *a, const DefineStmt *b)
1172 {
1173         COMPARE_SCALAR_FIELD(kind);
1174         COMPARE_SCALAR_FIELD(oldstyle);
1175         COMPARE_NODE_FIELD(defnames);
1176         COMPARE_NODE_FIELD(args);
1177         COMPARE_NODE_FIELD(definition);
1178
1179         return true;
1180 }
1181
1182 static bool
1183 _equalDropStmt(const DropStmt *a, const DropStmt *b)
1184 {
1185         COMPARE_NODE_FIELD(objects);
1186         COMPARE_NODE_FIELD(arguments);
1187         COMPARE_SCALAR_FIELD(removeType);
1188         COMPARE_SCALAR_FIELD(behavior);
1189         COMPARE_SCALAR_FIELD(missing_ok);
1190
1191         return true;
1192 }
1193
1194 static bool
1195 _equalTruncateStmt(const TruncateStmt *a, const TruncateStmt *b)
1196 {
1197         COMPARE_NODE_FIELD(relations);
1198         COMPARE_SCALAR_FIELD(restart_seqs);
1199         COMPARE_SCALAR_FIELD(behavior);
1200
1201         return true;
1202 }
1203
1204 static bool
1205 _equalCommentStmt(const CommentStmt *a, const CommentStmt *b)
1206 {
1207         COMPARE_SCALAR_FIELD(objtype);
1208         COMPARE_NODE_FIELD(objname);
1209         COMPARE_NODE_FIELD(objargs);
1210         COMPARE_STRING_FIELD(comment);
1211
1212         return true;
1213 }
1214
1215 static bool
1216 _equalSecLabelStmt(const SecLabelStmt *a, const SecLabelStmt *b)
1217 {
1218         COMPARE_SCALAR_FIELD(objtype);
1219         COMPARE_NODE_FIELD(objname);
1220         COMPARE_NODE_FIELD(objargs);
1221         COMPARE_STRING_FIELD(provider);
1222         COMPARE_STRING_FIELD(label);
1223
1224         return true;
1225 }
1226
1227 static bool
1228 _equalFetchStmt(const FetchStmt *a, const FetchStmt *b)
1229 {
1230         COMPARE_SCALAR_FIELD(direction);
1231         COMPARE_SCALAR_FIELD(howMany);
1232         COMPARE_STRING_FIELD(portalname);
1233         COMPARE_SCALAR_FIELD(ismove);
1234
1235         return true;
1236 }
1237
1238 static bool
1239 _equalIndexStmt(const IndexStmt *a, const IndexStmt *b)
1240 {
1241         COMPARE_STRING_FIELD(idxname);
1242         COMPARE_NODE_FIELD(relation);
1243         COMPARE_STRING_FIELD(accessMethod);
1244         COMPARE_STRING_FIELD(tableSpace);
1245         COMPARE_NODE_FIELD(indexParams);
1246         COMPARE_NODE_FIELD(options);
1247         COMPARE_NODE_FIELD(whereClause);
1248         COMPARE_NODE_FIELD(excludeOpNames);
1249         COMPARE_SCALAR_FIELD(indexOid);
1250         COMPARE_SCALAR_FIELD(oldNode);
1251         COMPARE_SCALAR_FIELD(unique);
1252         COMPARE_SCALAR_FIELD(primary);
1253         COMPARE_SCALAR_FIELD(isconstraint);
1254         COMPARE_SCALAR_FIELD(deferrable);
1255         COMPARE_SCALAR_FIELD(initdeferred);
1256         COMPARE_SCALAR_FIELD(concurrent);
1257
1258         return true;
1259 }
1260
1261 static bool
1262 _equalCreateFunctionStmt(const CreateFunctionStmt *a, const CreateFunctionStmt *b)
1263 {
1264         COMPARE_SCALAR_FIELD(replace);
1265         COMPARE_NODE_FIELD(funcname);
1266         COMPARE_NODE_FIELD(parameters);
1267         COMPARE_NODE_FIELD(returnType);
1268         COMPARE_NODE_FIELD(options);
1269         COMPARE_NODE_FIELD(withClause);
1270
1271         return true;
1272 }
1273
1274 static bool
1275 _equalFunctionParameter(const FunctionParameter *a, const FunctionParameter *b)
1276 {
1277         COMPARE_STRING_FIELD(name);
1278         COMPARE_NODE_FIELD(argType);
1279         COMPARE_SCALAR_FIELD(mode);
1280         COMPARE_NODE_FIELD(defexpr);
1281
1282         return true;
1283 }
1284
1285 static bool
1286 _equalAlterFunctionStmt(const AlterFunctionStmt *a, const AlterFunctionStmt *b)
1287 {
1288         COMPARE_NODE_FIELD(func);
1289         COMPARE_NODE_FIELD(actions);
1290
1291         return true;
1292 }
1293
1294 static bool
1295 _equalDoStmt(const DoStmt *a, const DoStmt *b)
1296 {
1297         COMPARE_NODE_FIELD(args);
1298
1299         return true;
1300 }
1301
1302 static bool
1303 _equalRenameStmt(const RenameStmt *a, const RenameStmt *b)
1304 {
1305         COMPARE_SCALAR_FIELD(renameType);
1306         COMPARE_NODE_FIELD(relation);
1307         COMPARE_NODE_FIELD(object);
1308         COMPARE_NODE_FIELD(objarg);
1309         COMPARE_STRING_FIELD(subname);
1310         COMPARE_STRING_FIELD(newname);
1311         COMPARE_SCALAR_FIELD(behavior);
1312
1313         return true;
1314 }
1315
1316 static bool
1317 _equalAlterObjectSchemaStmt(const AlterObjectSchemaStmt *a, const AlterObjectSchemaStmt *b)
1318 {
1319         COMPARE_SCALAR_FIELD(objectType);
1320         COMPARE_NODE_FIELD(relation);
1321         COMPARE_NODE_FIELD(object);
1322         COMPARE_NODE_FIELD(objarg);
1323         COMPARE_STRING_FIELD(addname);
1324         COMPARE_STRING_FIELD(newschema);
1325
1326         return true;
1327 }
1328
1329 static bool
1330 _equalAlterOwnerStmt(const AlterOwnerStmt *a, const AlterOwnerStmt *b)
1331 {
1332         COMPARE_SCALAR_FIELD(objectType);
1333         COMPARE_NODE_FIELD(relation);
1334         COMPARE_NODE_FIELD(object);
1335         COMPARE_NODE_FIELD(objarg);
1336         COMPARE_STRING_FIELD(addname);
1337         COMPARE_STRING_FIELD(newowner);
1338
1339         return true;
1340 }
1341
1342 static bool
1343 _equalRuleStmt(const RuleStmt *a, const RuleStmt *b)
1344 {
1345         COMPARE_NODE_FIELD(relation);
1346         COMPARE_STRING_FIELD(rulename);
1347         COMPARE_NODE_FIELD(whereClause);
1348         COMPARE_SCALAR_FIELD(event);
1349         COMPARE_SCALAR_FIELD(instead);
1350         COMPARE_NODE_FIELD(actions);
1351         COMPARE_SCALAR_FIELD(replace);
1352
1353         return true;
1354 }
1355
1356 static bool
1357 _equalNotifyStmt(const NotifyStmt *a, const NotifyStmt *b)
1358 {
1359         COMPARE_STRING_FIELD(conditionname);
1360         COMPARE_STRING_FIELD(payload);
1361
1362         return true;
1363 }
1364
1365 static bool
1366 _equalListenStmt(const ListenStmt *a, const ListenStmt *b)
1367 {
1368         COMPARE_STRING_FIELD(conditionname);
1369
1370         return true;
1371 }
1372
1373 static bool
1374 _equalUnlistenStmt(const UnlistenStmt *a, const UnlistenStmt *b)
1375 {
1376         COMPARE_STRING_FIELD(conditionname);
1377
1378         return true;
1379 }
1380
1381 static bool
1382 _equalTransactionStmt(const TransactionStmt *a, const TransactionStmt *b)
1383 {
1384         COMPARE_SCALAR_FIELD(kind);
1385         COMPARE_NODE_FIELD(options);
1386         COMPARE_STRING_FIELD(gid);
1387
1388         return true;
1389 }
1390
1391 static bool
1392 _equalCompositeTypeStmt(const CompositeTypeStmt *a, const CompositeTypeStmt *b)
1393 {
1394         COMPARE_NODE_FIELD(typevar);
1395         COMPARE_NODE_FIELD(coldeflist);
1396
1397         return true;
1398 }
1399
1400 static bool
1401 _equalCreateEnumStmt(const CreateEnumStmt *a, const CreateEnumStmt *b)
1402 {
1403         COMPARE_NODE_FIELD(typeName);
1404         COMPARE_NODE_FIELD(vals);
1405
1406         return true;
1407 }
1408
1409 static bool
1410 _equalCreateRangeStmt(const CreateRangeStmt *a, const CreateRangeStmt *b)
1411 {
1412         COMPARE_NODE_FIELD(typeName);
1413         COMPARE_NODE_FIELD(params);
1414
1415         return true;
1416 }
1417
1418 static bool
1419 _equalAlterEnumStmt(const AlterEnumStmt *a, const AlterEnumStmt *b)
1420 {
1421         COMPARE_NODE_FIELD(typeName);
1422         COMPARE_STRING_FIELD(newVal);
1423         COMPARE_STRING_FIELD(newValNeighbor);
1424         COMPARE_SCALAR_FIELD(newValIsAfter);
1425
1426         return true;
1427 }
1428
1429 static bool
1430 _equalViewStmt(const ViewStmt *a, const ViewStmt *b)
1431 {
1432         COMPARE_NODE_FIELD(view);
1433         COMPARE_NODE_FIELD(aliases);
1434         COMPARE_NODE_FIELD(query);
1435         COMPARE_SCALAR_FIELD(replace);
1436
1437         return true;
1438 }
1439
1440 static bool
1441 _equalLoadStmt(const LoadStmt *a, const LoadStmt *b)
1442 {
1443         COMPARE_STRING_FIELD(filename);
1444
1445         return true;
1446 }
1447
1448 static bool
1449 _equalCreateDomainStmt(const CreateDomainStmt *a, const CreateDomainStmt *b)
1450 {
1451         COMPARE_NODE_FIELD(domainname);
1452         COMPARE_NODE_FIELD(typeName);
1453         COMPARE_NODE_FIELD(collClause);
1454         COMPARE_NODE_FIELD(constraints);
1455
1456         return true;
1457 }
1458
1459 static bool
1460 _equalCreateOpClassStmt(const CreateOpClassStmt *a, const CreateOpClassStmt *b)
1461 {
1462         COMPARE_NODE_FIELD(opclassname);
1463         COMPARE_NODE_FIELD(opfamilyname);
1464         COMPARE_STRING_FIELD(amname);
1465         COMPARE_NODE_FIELD(datatype);
1466         COMPARE_NODE_FIELD(items);
1467         COMPARE_SCALAR_FIELD(isDefault);
1468
1469         return true;
1470 }
1471
1472 static bool
1473 _equalCreateOpClassItem(const CreateOpClassItem *a, const CreateOpClassItem *b)
1474 {
1475         COMPARE_SCALAR_FIELD(itemtype);
1476         COMPARE_NODE_FIELD(name);
1477         COMPARE_NODE_FIELD(args);
1478         COMPARE_SCALAR_FIELD(number);
1479         COMPARE_NODE_FIELD(order_family);
1480         COMPARE_NODE_FIELD(class_args);
1481         COMPARE_NODE_FIELD(storedtype);
1482
1483         return true;
1484 }
1485
1486 static bool
1487 _equalCreateOpFamilyStmt(const CreateOpFamilyStmt *a, const CreateOpFamilyStmt *b)
1488 {
1489         COMPARE_NODE_FIELD(opfamilyname);
1490         COMPARE_STRING_FIELD(amname);
1491
1492         return true;
1493 }
1494
1495 static bool
1496 _equalAlterOpFamilyStmt(const AlterOpFamilyStmt *a, const AlterOpFamilyStmt *b)
1497 {
1498         COMPARE_NODE_FIELD(opfamilyname);
1499         COMPARE_STRING_FIELD(amname);
1500         COMPARE_SCALAR_FIELD(isDrop);
1501         COMPARE_NODE_FIELD(items);
1502
1503         return true;
1504 }
1505
1506 static bool
1507 _equalCreatedbStmt(const CreatedbStmt *a, const CreatedbStmt *b)
1508 {
1509         COMPARE_STRING_FIELD(dbname);
1510         COMPARE_NODE_FIELD(options);
1511
1512         return true;
1513 }
1514
1515 static bool
1516 _equalAlterDatabaseStmt(const AlterDatabaseStmt *a, const AlterDatabaseStmt *b)
1517 {
1518         COMPARE_STRING_FIELD(dbname);
1519         COMPARE_NODE_FIELD(options);
1520
1521         return true;
1522 }
1523
1524 static bool
1525 _equalAlterDatabaseSetStmt(const AlterDatabaseSetStmt *a, const AlterDatabaseSetStmt *b)
1526 {
1527         COMPARE_STRING_FIELD(dbname);
1528         COMPARE_NODE_FIELD(setstmt);
1529
1530         return true;
1531 }
1532
1533 static bool
1534 _equalDropdbStmt(const DropdbStmt *a, const DropdbStmt *b)
1535 {
1536         COMPARE_STRING_FIELD(dbname);
1537         COMPARE_SCALAR_FIELD(missing_ok);
1538
1539         return true;
1540 }
1541
1542 static bool
1543 _equalVacuumStmt(const VacuumStmt *a, const VacuumStmt *b)
1544 {
1545         COMPARE_SCALAR_FIELD(options);
1546         COMPARE_SCALAR_FIELD(freeze_min_age);
1547         COMPARE_SCALAR_FIELD(freeze_table_age);
1548         COMPARE_NODE_FIELD(relation);
1549         COMPARE_NODE_FIELD(va_cols);
1550
1551         return true;
1552 }
1553
1554 static bool
1555 _equalExplainStmt(const ExplainStmt *a, const ExplainStmt *b)
1556 {
1557         COMPARE_NODE_FIELD(query);
1558         COMPARE_NODE_FIELD(options);
1559
1560         return true;
1561 }
1562
1563 static bool
1564 _equalCreateSeqStmt(const CreateSeqStmt *a, const CreateSeqStmt *b)
1565 {
1566         COMPARE_NODE_FIELD(sequence);
1567         COMPARE_NODE_FIELD(options);
1568         COMPARE_SCALAR_FIELD(ownerId);
1569
1570         return true;
1571 }
1572
1573 static bool
1574 _equalAlterSeqStmt(const AlterSeqStmt *a, const AlterSeqStmt *b)
1575 {
1576         COMPARE_NODE_FIELD(sequence);
1577         COMPARE_NODE_FIELD(options);
1578
1579         return true;
1580 }
1581
1582 static bool
1583 _equalVariableSetStmt(const VariableSetStmt *a, const VariableSetStmt *b)
1584 {
1585         COMPARE_SCALAR_FIELD(kind);
1586         COMPARE_STRING_FIELD(name);
1587         COMPARE_NODE_FIELD(args);
1588         COMPARE_SCALAR_FIELD(is_local);
1589
1590         return true;
1591 }
1592
1593 static bool
1594 _equalVariableShowStmt(const VariableShowStmt *a, const VariableShowStmt *b)
1595 {
1596         COMPARE_STRING_FIELD(name);
1597
1598         return true;
1599 }
1600
1601 static bool
1602 _equalDiscardStmt(const DiscardStmt *a, const DiscardStmt *b)
1603 {
1604         COMPARE_SCALAR_FIELD(target);
1605
1606         return true;
1607 }
1608
1609 static bool
1610 _equalCreateTableSpaceStmt(const CreateTableSpaceStmt *a, const CreateTableSpaceStmt *b)
1611 {
1612         COMPARE_STRING_FIELD(tablespacename);
1613         COMPARE_STRING_FIELD(owner);
1614         COMPARE_STRING_FIELD(location);
1615
1616         return true;
1617 }
1618
1619 static bool
1620 _equalDropTableSpaceStmt(const DropTableSpaceStmt *a, const DropTableSpaceStmt *b)
1621 {
1622         COMPARE_STRING_FIELD(tablespacename);
1623         COMPARE_SCALAR_FIELD(missing_ok);
1624
1625         return true;
1626 }
1627
1628 static bool
1629 _equalAlterTableSpaceOptionsStmt(const AlterTableSpaceOptionsStmt *a,
1630                                                                  const AlterTableSpaceOptionsStmt *b)
1631 {
1632         COMPARE_STRING_FIELD(tablespacename);
1633         COMPARE_NODE_FIELD(options);
1634         COMPARE_SCALAR_FIELD(isReset);
1635
1636         return true;
1637 }
1638
1639 static bool
1640 _equalCreateExtensionStmt(const CreateExtensionStmt *a, const CreateExtensionStmt *b)
1641 {
1642         COMPARE_STRING_FIELD(extname);
1643         COMPARE_SCALAR_FIELD(if_not_exists);
1644         COMPARE_NODE_FIELD(options);
1645
1646         return true;
1647 }
1648
1649 static bool
1650 _equalAlterExtensionStmt(const AlterExtensionStmt *a, const AlterExtensionStmt *b)
1651 {
1652         COMPARE_STRING_FIELD(extname);
1653         COMPARE_NODE_FIELD(options);
1654
1655         return true;
1656 }
1657
1658 static bool
1659 _equalAlterExtensionContentsStmt(const AlterExtensionContentsStmt *a, const AlterExtensionContentsStmt *b)
1660 {
1661         COMPARE_STRING_FIELD(extname);
1662         COMPARE_SCALAR_FIELD(action);
1663         COMPARE_SCALAR_FIELD(objtype);
1664         COMPARE_NODE_FIELD(objname);
1665         COMPARE_NODE_FIELD(objargs);
1666
1667         return true;
1668 }
1669
1670 static bool
1671 _equalCreateFdwStmt(const CreateFdwStmt *a, const CreateFdwStmt *b)
1672 {
1673         COMPARE_STRING_FIELD(fdwname);
1674         COMPARE_NODE_FIELD(func_options);
1675         COMPARE_NODE_FIELD(options);
1676
1677         return true;
1678 }
1679
1680 static bool
1681 _equalAlterFdwStmt(const AlterFdwStmt *a, const AlterFdwStmt *b)
1682 {
1683         COMPARE_STRING_FIELD(fdwname);
1684         COMPARE_NODE_FIELD(func_options);
1685         COMPARE_NODE_FIELD(options);
1686
1687         return true;
1688 }
1689
1690 static bool
1691 _equalCreateForeignServerStmt(const CreateForeignServerStmt *a, const CreateForeignServerStmt *b)
1692 {
1693         COMPARE_STRING_FIELD(servername);
1694         COMPARE_STRING_FIELD(servertype);
1695         COMPARE_STRING_FIELD(version);
1696         COMPARE_STRING_FIELD(fdwname);
1697         COMPARE_NODE_FIELD(options);
1698
1699         return true;
1700 }
1701
1702 static bool
1703 _equalAlterForeignServerStmt(const AlterForeignServerStmt *a, const AlterForeignServerStmt *b)
1704 {
1705         COMPARE_STRING_FIELD(servername);
1706         COMPARE_STRING_FIELD(version);
1707         COMPARE_NODE_FIELD(options);
1708         COMPARE_SCALAR_FIELD(has_version);
1709
1710         return true;
1711 }
1712
1713 static bool
1714 _equalCreateUserMappingStmt(const CreateUserMappingStmt *a, const CreateUserMappingStmt *b)
1715 {
1716         COMPARE_STRING_FIELD(username);
1717         COMPARE_STRING_FIELD(servername);
1718         COMPARE_NODE_FIELD(options);
1719
1720         return true;
1721 }
1722
1723 static bool
1724 _equalAlterUserMappingStmt(const AlterUserMappingStmt *a, const AlterUserMappingStmt *b)
1725 {
1726         COMPARE_STRING_FIELD(username);
1727         COMPARE_STRING_FIELD(servername);
1728         COMPARE_NODE_FIELD(options);
1729
1730         return true;
1731 }
1732
1733 static bool
1734 _equalDropUserMappingStmt(const DropUserMappingStmt *a, const DropUserMappingStmt *b)
1735 {
1736         COMPARE_STRING_FIELD(username);
1737         COMPARE_STRING_FIELD(servername);
1738         COMPARE_SCALAR_FIELD(missing_ok);
1739
1740         return true;
1741 }
1742
1743 static bool
1744 _equalCreateForeignTableStmt(const CreateForeignTableStmt *a, const CreateForeignTableStmt *b)
1745 {
1746         if (!_equalCreateStmt(&a->base, &b->base))
1747                 return false;
1748
1749         COMPARE_STRING_FIELD(servername);
1750         COMPARE_NODE_FIELD(options);
1751
1752         return true;
1753 }
1754
1755 static bool
1756 _equalCreateTrigStmt(const CreateTrigStmt *a, const CreateTrigStmt *b)
1757 {
1758         COMPARE_STRING_FIELD(trigname);
1759         COMPARE_NODE_FIELD(relation);
1760         COMPARE_NODE_FIELD(funcname);
1761         COMPARE_NODE_FIELD(args);
1762         COMPARE_SCALAR_FIELD(row);
1763         COMPARE_SCALAR_FIELD(timing);
1764         COMPARE_SCALAR_FIELD(events);
1765         COMPARE_NODE_FIELD(columns);
1766         COMPARE_NODE_FIELD(whenClause);
1767         COMPARE_SCALAR_FIELD(isconstraint);
1768         COMPARE_SCALAR_FIELD(deferrable);
1769         COMPARE_SCALAR_FIELD(initdeferred);
1770         COMPARE_NODE_FIELD(constrrel);
1771
1772         return true;
1773 }
1774
1775 static bool
1776 _equalCreatePLangStmt(const CreatePLangStmt *a, const CreatePLangStmt *b)
1777 {
1778         COMPARE_SCALAR_FIELD(replace);
1779         COMPARE_STRING_FIELD(plname);
1780         COMPARE_NODE_FIELD(plhandler);
1781         COMPARE_NODE_FIELD(plinline);
1782         COMPARE_NODE_FIELD(plvalidator);
1783         COMPARE_SCALAR_FIELD(pltrusted);
1784
1785         return true;
1786 }
1787
1788 static bool
1789 _equalCreateRoleStmt(const CreateRoleStmt *a, const CreateRoleStmt *b)
1790 {
1791         COMPARE_SCALAR_FIELD(stmt_type);
1792         COMPARE_STRING_FIELD(role);
1793         COMPARE_NODE_FIELD(options);
1794
1795         return true;
1796 }
1797
1798 static bool
1799 _equalAlterRoleStmt(const AlterRoleStmt *a, const AlterRoleStmt *b)
1800 {
1801         COMPARE_STRING_FIELD(role);
1802         COMPARE_NODE_FIELD(options);
1803         COMPARE_SCALAR_FIELD(action);
1804
1805         return true;
1806 }
1807
1808 static bool
1809 _equalAlterRoleSetStmt(const AlterRoleSetStmt *a, const AlterRoleSetStmt *b)
1810 {
1811         COMPARE_STRING_FIELD(role);
1812         COMPARE_STRING_FIELD(database);
1813         COMPARE_NODE_FIELD(setstmt);
1814
1815         return true;
1816 }
1817
1818 static bool
1819 _equalDropRoleStmt(const DropRoleStmt *a, const DropRoleStmt *b)
1820 {
1821         COMPARE_NODE_FIELD(roles);
1822         COMPARE_SCALAR_FIELD(missing_ok);
1823
1824         return true;
1825 }
1826
1827 static bool
1828 _equalLockStmt(const LockStmt *a, const LockStmt *b)
1829 {
1830         COMPARE_NODE_FIELD(relations);
1831         COMPARE_SCALAR_FIELD(mode);
1832         COMPARE_SCALAR_FIELD(nowait);
1833
1834         return true;
1835 }
1836
1837 static bool
1838 _equalConstraintsSetStmt(const ConstraintsSetStmt *a, const ConstraintsSetStmt *b)
1839 {
1840         COMPARE_NODE_FIELD(constraints);
1841         COMPARE_SCALAR_FIELD(deferred);
1842
1843         return true;
1844 }
1845
1846 static bool
1847 _equalReindexStmt(const ReindexStmt *a, const ReindexStmt *b)
1848 {
1849         COMPARE_SCALAR_FIELD(kind);
1850         COMPARE_NODE_FIELD(relation);
1851         COMPARE_STRING_FIELD(name);
1852         COMPARE_SCALAR_FIELD(do_system);
1853         COMPARE_SCALAR_FIELD(do_user);
1854
1855         return true;
1856 }
1857
1858 static bool
1859 _equalCreateSchemaStmt(const CreateSchemaStmt *a, const CreateSchemaStmt *b)
1860 {
1861         COMPARE_STRING_FIELD(schemaname);
1862         COMPARE_STRING_FIELD(authid);
1863         COMPARE_NODE_FIELD(schemaElts);
1864
1865         return true;
1866 }
1867
1868 static bool
1869 _equalCreateConversionStmt(const CreateConversionStmt *a, const CreateConversionStmt *b)
1870 {
1871         COMPARE_NODE_FIELD(conversion_name);
1872         COMPARE_STRING_FIELD(for_encoding_name);
1873         COMPARE_STRING_FIELD(to_encoding_name);
1874         COMPARE_NODE_FIELD(func_name);
1875         COMPARE_SCALAR_FIELD(def);
1876
1877         return true;
1878 }
1879
1880 static bool
1881 _equalCreateCastStmt(const CreateCastStmt *a, const CreateCastStmt *b)
1882 {
1883         COMPARE_NODE_FIELD(sourcetype);
1884         COMPARE_NODE_FIELD(targettype);
1885         COMPARE_NODE_FIELD(func);
1886         COMPARE_SCALAR_FIELD(context);
1887         COMPARE_SCALAR_FIELD(inout);
1888
1889         return true;
1890 }
1891
1892 static bool
1893 _equalPrepareStmt(const PrepareStmt *a, const PrepareStmt *b)
1894 {
1895         COMPARE_STRING_FIELD(name);
1896         COMPARE_NODE_FIELD(argtypes);
1897         COMPARE_NODE_FIELD(query);
1898
1899         return true;
1900 }
1901
1902 static bool
1903 _equalExecuteStmt(const ExecuteStmt *a, const ExecuteStmt *b)
1904 {
1905         COMPARE_STRING_FIELD(name);
1906         COMPARE_NODE_FIELD(into);
1907         COMPARE_NODE_FIELD(params);
1908
1909         return true;
1910 }
1911
1912 static bool
1913 _equalDeallocateStmt(const DeallocateStmt *a, const DeallocateStmt *b)
1914 {
1915         COMPARE_STRING_FIELD(name);
1916
1917         return true;
1918 }
1919
1920 static bool
1921 _equalDropOwnedStmt(const DropOwnedStmt *a, const DropOwnedStmt *b)
1922 {
1923         COMPARE_NODE_FIELD(roles);
1924         COMPARE_SCALAR_FIELD(behavior);
1925
1926         return true;
1927 }
1928
1929 static bool
1930 _equalReassignOwnedStmt(const ReassignOwnedStmt *a, const ReassignOwnedStmt *b)
1931 {
1932         COMPARE_NODE_FIELD(roles);
1933         COMPARE_NODE_FIELD(newrole);
1934
1935         return true;
1936 }
1937
1938 static bool
1939 _equalAlterTSDictionaryStmt(const AlterTSDictionaryStmt *a, const AlterTSDictionaryStmt *b)
1940 {
1941         COMPARE_NODE_FIELD(dictname);
1942         COMPARE_NODE_FIELD(options);
1943
1944         return true;
1945 }
1946
1947 static bool
1948 _equalAlterTSConfigurationStmt(const AlterTSConfigurationStmt *a,
1949                                                            const AlterTSConfigurationStmt *b)
1950 {
1951         COMPARE_NODE_FIELD(cfgname);
1952         COMPARE_NODE_FIELD(tokentype);
1953         COMPARE_NODE_FIELD(dicts);
1954         COMPARE_SCALAR_FIELD(override);
1955         COMPARE_SCALAR_FIELD(replace);
1956         COMPARE_SCALAR_FIELD(missing_ok);
1957
1958         return true;
1959 }
1960
1961 static bool
1962 _equalAExpr(const A_Expr *a, const A_Expr *b)
1963 {
1964         COMPARE_SCALAR_FIELD(kind);
1965         COMPARE_NODE_FIELD(name);
1966         COMPARE_NODE_FIELD(lexpr);
1967         COMPARE_NODE_FIELD(rexpr);
1968         COMPARE_LOCATION_FIELD(location);
1969
1970         return true;
1971 }
1972
1973 static bool
1974 _equalColumnRef(const ColumnRef *a, const ColumnRef *b)
1975 {
1976         COMPARE_NODE_FIELD(fields);
1977         COMPARE_LOCATION_FIELD(location);
1978
1979         return true;
1980 }
1981
1982 static bool
1983 _equalParamRef(const ParamRef *a, const ParamRef *b)
1984 {
1985         COMPARE_SCALAR_FIELD(number);
1986         COMPARE_LOCATION_FIELD(location);
1987
1988         return true;
1989 }
1990
1991 static bool
1992 _equalAConst(const A_Const *a, const A_Const *b)
1993 {
1994         if (!equal(&a->val, &b->val))           /* hack for in-line Value field */
1995                 return false;
1996         COMPARE_LOCATION_FIELD(location);
1997
1998         return true;
1999 }
2000
2001 static bool
2002 _equalFuncCall(const FuncCall *a, const FuncCall *b)
2003 {
2004         COMPARE_NODE_FIELD(funcname);
2005         COMPARE_NODE_FIELD(args);
2006         COMPARE_NODE_FIELD(agg_order);
2007         COMPARE_SCALAR_FIELD(agg_star);
2008         COMPARE_SCALAR_FIELD(agg_distinct);
2009         COMPARE_SCALAR_FIELD(func_variadic);
2010         COMPARE_NODE_FIELD(over);
2011         COMPARE_LOCATION_FIELD(location);
2012
2013         return true;
2014 }
2015
2016 static bool
2017 _equalAStar(const A_Star *a, const A_Star *b)
2018 {
2019         return true;
2020 }
2021
2022 static bool
2023 _equalAIndices(const A_Indices *a, const A_Indices *b)
2024 {
2025         COMPARE_NODE_FIELD(lidx);
2026         COMPARE_NODE_FIELD(uidx);
2027
2028         return true;
2029 }
2030
2031 static bool
2032 _equalA_Indirection(const A_Indirection *a, const A_Indirection *b)
2033 {
2034         COMPARE_NODE_FIELD(arg);
2035         COMPARE_NODE_FIELD(indirection);
2036
2037         return true;
2038 }
2039
2040 static bool
2041 _equalA_ArrayExpr(const A_ArrayExpr *a, const A_ArrayExpr *b)
2042 {
2043         COMPARE_NODE_FIELD(elements);
2044         COMPARE_LOCATION_FIELD(location);
2045
2046         return true;
2047 }
2048
2049 static bool
2050 _equalResTarget(const ResTarget *a, const ResTarget *b)
2051 {
2052         COMPARE_STRING_FIELD(name);
2053         COMPARE_NODE_FIELD(indirection);
2054         COMPARE_NODE_FIELD(val);
2055         COMPARE_LOCATION_FIELD(location);
2056
2057         return true;
2058 }
2059
2060 static bool
2061 _equalTypeName(const TypeName *a, const TypeName *b)
2062 {
2063         COMPARE_NODE_FIELD(names);
2064         COMPARE_SCALAR_FIELD(typeOid);
2065         COMPARE_SCALAR_FIELD(setof);
2066         COMPARE_SCALAR_FIELD(pct_type);
2067         COMPARE_NODE_FIELD(typmods);
2068         COMPARE_SCALAR_FIELD(typemod);
2069         COMPARE_NODE_FIELD(arrayBounds);
2070         COMPARE_LOCATION_FIELD(location);
2071
2072         return true;
2073 }
2074
2075 static bool
2076 _equalTypeCast(const TypeCast *a, const TypeCast *b)
2077 {
2078         COMPARE_NODE_FIELD(arg);
2079         COMPARE_NODE_FIELD(typeName);
2080         COMPARE_LOCATION_FIELD(location);
2081
2082         return true;
2083 }
2084
2085 static bool
2086 _equalCollateClause(const CollateClause *a, const CollateClause *b)
2087 {
2088         COMPARE_NODE_FIELD(arg);
2089         COMPARE_NODE_FIELD(collname);
2090         COMPARE_LOCATION_FIELD(location);
2091
2092         return true;
2093 }
2094
2095 static bool
2096 _equalSortBy(const SortBy *a, const SortBy *b)
2097 {
2098         COMPARE_NODE_FIELD(node);
2099         COMPARE_SCALAR_FIELD(sortby_dir);
2100         COMPARE_SCALAR_FIELD(sortby_nulls);
2101         COMPARE_NODE_FIELD(useOp);
2102         COMPARE_LOCATION_FIELD(location);
2103
2104         return true;
2105 }
2106
2107 static bool
2108 _equalWindowDef(const WindowDef *a, const WindowDef *b)
2109 {
2110         COMPARE_STRING_FIELD(name);
2111         COMPARE_STRING_FIELD(refname);
2112         COMPARE_NODE_FIELD(partitionClause);
2113         COMPARE_NODE_FIELD(orderClause);
2114         COMPARE_SCALAR_FIELD(frameOptions);
2115         COMPARE_NODE_FIELD(startOffset);
2116         COMPARE_NODE_FIELD(endOffset);
2117         COMPARE_LOCATION_FIELD(location);
2118
2119         return true;
2120 }
2121
2122 static bool
2123 _equalRangeSubselect(const RangeSubselect *a, const RangeSubselect *b)
2124 {
2125         COMPARE_NODE_FIELD(subquery);
2126         COMPARE_NODE_FIELD(alias);
2127
2128         return true;
2129 }
2130
2131 static bool
2132 _equalRangeFunction(const RangeFunction *a, const RangeFunction *b)
2133 {
2134         COMPARE_NODE_FIELD(funccallnode);
2135         COMPARE_NODE_FIELD(alias);
2136         COMPARE_NODE_FIELD(coldeflist);
2137
2138         return true;
2139 }
2140
2141 static bool
2142 _equalIndexElem(const IndexElem *a, const IndexElem *b)
2143 {
2144         COMPARE_STRING_FIELD(name);
2145         COMPARE_NODE_FIELD(expr);
2146         COMPARE_STRING_FIELD(indexcolname);
2147         COMPARE_NODE_FIELD(collation);
2148         COMPARE_NODE_FIELD(opclass);
2149         COMPARE_SCALAR_FIELD(ordering);
2150         COMPARE_SCALAR_FIELD(nulls_ordering);
2151
2152         return true;
2153 }
2154
2155 static bool
2156 _equalColumnDef(const ColumnDef *a, const ColumnDef *b)
2157 {
2158         COMPARE_STRING_FIELD(colname);
2159         COMPARE_NODE_FIELD(typeName);
2160         COMPARE_SCALAR_FIELD(inhcount);
2161         COMPARE_SCALAR_FIELD(is_local);
2162         COMPARE_SCALAR_FIELD(is_not_null);
2163         COMPARE_SCALAR_FIELD(is_from_type);
2164         COMPARE_SCALAR_FIELD(storage);
2165         COMPARE_NODE_FIELD(raw_default);
2166         COMPARE_NODE_FIELD(cooked_default);
2167         COMPARE_NODE_FIELD(collClause);
2168         COMPARE_SCALAR_FIELD(collOid);
2169         COMPARE_NODE_FIELD(constraints);
2170
2171         return true;
2172 }
2173
2174 static bool
2175 _equalConstraint(const Constraint *a, const Constraint *b)
2176 {
2177         COMPARE_SCALAR_FIELD(contype);
2178         COMPARE_STRING_FIELD(conname);
2179         COMPARE_SCALAR_FIELD(deferrable);
2180         COMPARE_SCALAR_FIELD(initdeferred);
2181         COMPARE_LOCATION_FIELD(location);
2182         COMPARE_NODE_FIELD(raw_expr);
2183         COMPARE_STRING_FIELD(cooked_expr);
2184         COMPARE_NODE_FIELD(keys);
2185         COMPARE_NODE_FIELD(exclusions);
2186         COMPARE_NODE_FIELD(options);
2187         COMPARE_STRING_FIELD(indexname);
2188         COMPARE_STRING_FIELD(indexspace);
2189         COMPARE_STRING_FIELD(access_method);
2190         COMPARE_NODE_FIELD(where_clause);
2191         COMPARE_NODE_FIELD(pktable);
2192         COMPARE_NODE_FIELD(fk_attrs);
2193         COMPARE_NODE_FIELD(pk_attrs);
2194         COMPARE_SCALAR_FIELD(fk_matchtype);
2195         COMPARE_SCALAR_FIELD(fk_upd_action);
2196         COMPARE_SCALAR_FIELD(fk_del_action);
2197         COMPARE_SCALAR_FIELD(skip_validation);
2198         COMPARE_SCALAR_FIELD(initially_valid);
2199
2200         return true;
2201 }
2202
2203 static bool
2204 _equalDefElem(const DefElem *a, const DefElem *b)
2205 {
2206         COMPARE_STRING_FIELD(defnamespace);
2207         COMPARE_STRING_FIELD(defname);
2208         COMPARE_NODE_FIELD(arg);
2209         COMPARE_SCALAR_FIELD(defaction);
2210
2211         return true;
2212 }
2213
2214 static bool
2215 _equalLockingClause(const LockingClause *a, const LockingClause *b)
2216 {
2217         COMPARE_NODE_FIELD(lockedRels);
2218         COMPARE_SCALAR_FIELD(forUpdate);
2219         COMPARE_SCALAR_FIELD(noWait);
2220
2221         return true;
2222 }
2223
2224 static bool
2225 _equalRangeTblEntry(const RangeTblEntry *a, const RangeTblEntry *b)
2226 {
2227         COMPARE_SCALAR_FIELD(rtekind);
2228         COMPARE_SCALAR_FIELD(relid);
2229         COMPARE_SCALAR_FIELD(relkind);
2230         COMPARE_NODE_FIELD(subquery);
2231         COMPARE_SCALAR_FIELD(jointype);
2232         COMPARE_NODE_FIELD(joinaliasvars);
2233         COMPARE_NODE_FIELD(funcexpr);
2234         COMPARE_NODE_FIELD(funccoltypes);
2235         COMPARE_NODE_FIELD(funccoltypmods);
2236         COMPARE_NODE_FIELD(funccolcollations);
2237         COMPARE_NODE_FIELD(values_lists);
2238         COMPARE_NODE_FIELD(values_collations);
2239         COMPARE_STRING_FIELD(ctename);
2240         COMPARE_SCALAR_FIELD(ctelevelsup);
2241         COMPARE_SCALAR_FIELD(self_reference);
2242         COMPARE_NODE_FIELD(ctecoltypes);
2243         COMPARE_NODE_FIELD(ctecoltypmods);
2244         COMPARE_NODE_FIELD(ctecolcollations);
2245         COMPARE_NODE_FIELD(alias);
2246         COMPARE_NODE_FIELD(eref);
2247         COMPARE_SCALAR_FIELD(inh);
2248         COMPARE_SCALAR_FIELD(inFromCl);
2249         COMPARE_SCALAR_FIELD(requiredPerms);
2250         COMPARE_SCALAR_FIELD(checkAsUser);
2251         COMPARE_BITMAPSET_FIELD(selectedCols);
2252         COMPARE_BITMAPSET_FIELD(modifiedCols);
2253
2254         return true;
2255 }
2256
2257 static bool
2258 _equalSortGroupClause(const SortGroupClause *a, const SortGroupClause *b)
2259 {
2260         COMPARE_SCALAR_FIELD(tleSortGroupRef);
2261         COMPARE_SCALAR_FIELD(eqop);
2262         COMPARE_SCALAR_FIELD(sortop);
2263         COMPARE_SCALAR_FIELD(nulls_first);
2264         COMPARE_SCALAR_FIELD(hashable);
2265
2266         return true;
2267 }
2268
2269 static bool
2270 _equalWindowClause(const WindowClause *a, const WindowClause *b)
2271 {
2272         COMPARE_STRING_FIELD(name);
2273         COMPARE_STRING_FIELD(refname);
2274         COMPARE_NODE_FIELD(partitionClause);
2275         COMPARE_NODE_FIELD(orderClause);
2276         COMPARE_SCALAR_FIELD(frameOptions);
2277         COMPARE_NODE_FIELD(startOffset);
2278         COMPARE_NODE_FIELD(endOffset);
2279         COMPARE_SCALAR_FIELD(winref);
2280         COMPARE_SCALAR_FIELD(copiedOrder);
2281
2282         return true;
2283 }
2284
2285 static bool
2286 _equalRowMarkClause(const RowMarkClause *a, const RowMarkClause *b)
2287 {
2288         COMPARE_SCALAR_FIELD(rti);
2289         COMPARE_SCALAR_FIELD(forUpdate);
2290         COMPARE_SCALAR_FIELD(noWait);
2291         COMPARE_SCALAR_FIELD(pushedDown);
2292
2293         return true;
2294 }
2295
2296 static bool
2297 _equalWithClause(const WithClause *a, const WithClause *b)
2298 {
2299         COMPARE_NODE_FIELD(ctes);
2300         COMPARE_SCALAR_FIELD(recursive);
2301         COMPARE_LOCATION_FIELD(location);
2302
2303         return true;
2304 }
2305
2306 static bool
2307 _equalCommonTableExpr(const CommonTableExpr *a, const CommonTableExpr *b)
2308 {
2309         COMPARE_STRING_FIELD(ctename);
2310         COMPARE_NODE_FIELD(aliascolnames);
2311         COMPARE_NODE_FIELD(ctequery);
2312         COMPARE_LOCATION_FIELD(location);
2313         COMPARE_SCALAR_FIELD(cterecursive);
2314         COMPARE_SCALAR_FIELD(cterefcount);
2315         COMPARE_NODE_FIELD(ctecolnames);
2316         COMPARE_NODE_FIELD(ctecoltypes);
2317         COMPARE_NODE_FIELD(ctecoltypmods);
2318         COMPARE_NODE_FIELD(ctecolcollations);
2319
2320         return true;
2321 }
2322
2323 static bool
2324 _equalXmlSerialize(const XmlSerialize *a, const XmlSerialize *b)
2325 {
2326         COMPARE_SCALAR_FIELD(xmloption);
2327         COMPARE_NODE_FIELD(expr);
2328         COMPARE_NODE_FIELD(typeName);
2329         COMPARE_LOCATION_FIELD(location);
2330
2331         return true;
2332 }
2333
2334 /*
2335  * Stuff from pg_list.h
2336  */
2337
2338 static bool
2339 _equalList(const List *a, const List *b)
2340 {
2341         const ListCell   *item_a;
2342         const ListCell   *item_b;
2343
2344         /*
2345          * Try to reject by simple scalar checks before grovelling through all the
2346          * list elements...
2347          */
2348         COMPARE_SCALAR_FIELD(type);
2349         COMPARE_SCALAR_FIELD(length);
2350
2351         /*
2352          * We place the switch outside the loop for the sake of efficiency; this
2353          * may not be worth doing...
2354          */
2355         switch (a->type)
2356         {
2357                 case T_List:
2358                         forboth(item_a, a, item_b, b)
2359                         {
2360                                 if (!equal(lfirst(item_a), lfirst(item_b)))
2361                                         return false;
2362                         }
2363                         break;
2364                 case T_IntList:
2365                         forboth(item_a, a, item_b, b)
2366                         {
2367                                 if (lfirst_int(item_a) != lfirst_int(item_b))
2368                                         return false;
2369                         }
2370                         break;
2371                 case T_OidList:
2372                         forboth(item_a, a, item_b, b)
2373                         {
2374                                 if (lfirst_oid(item_a) != lfirst_oid(item_b))
2375                                         return false;
2376                         }
2377                         break;
2378                 default:
2379                         elog(ERROR, "unrecognized list node type: %d",
2380                                  (int) a->type);
2381                         return false;           /* keep compiler quiet */
2382         }
2383
2384         /*
2385          * If we got here, we should have run out of elements of both lists
2386          */
2387         Assert(item_a == NULL);
2388         Assert(item_b == NULL);
2389
2390         return true;
2391 }
2392
2393 /*
2394  * Stuff from value.h
2395  */
2396
2397 static bool
2398 _equalValue(const Value *a, const Value *b)
2399 {
2400         COMPARE_SCALAR_FIELD(type);
2401
2402         switch (a->type)
2403         {
2404                 case T_Integer:
2405                         COMPARE_SCALAR_FIELD(val.ival);
2406                         break;
2407                 case T_Float:
2408                 case T_String:
2409                 case T_BitString:
2410                         COMPARE_STRING_FIELD(val.str);
2411                         break;
2412                 case T_Null:
2413                         /* nothing to do */
2414                         break;
2415                 default:
2416                         elog(ERROR, "unrecognized node type: %d", (int) a->type);
2417                         break;
2418         }
2419
2420         return true;
2421 }
2422
2423 /*
2424  * equal
2425  *        returns whether two nodes are equal
2426  */
2427 bool
2428 equal(const void *a, const void *b)
2429 {
2430         bool            retval;
2431
2432         if (a == b)
2433                 return true;
2434
2435         /*
2436          * note that a!=b, so only one of them can be NULL
2437          */
2438         if (a == NULL || b == NULL)
2439                 return false;
2440
2441         /*
2442          * are they the same type of nodes?
2443          */
2444         if (nodeTag(a) != nodeTag(b))
2445                 return false;
2446
2447         switch (nodeTag(a))
2448         {
2449                         /*
2450                          * PRIMITIVE NODES
2451                          */
2452                 case T_Alias:
2453                         retval = _equalAlias(a, b);
2454                         break;
2455                 case T_RangeVar:
2456                         retval = _equalRangeVar(a, b);
2457                         break;
2458                 case T_IntoClause:
2459                         retval = _equalIntoClause(a, b);
2460                         break;
2461                 case T_Var:
2462                         retval = _equalVar(a, b);
2463                         break;
2464                 case T_Const:
2465                         retval = _equalConst(a, b);
2466                         break;
2467                 case T_Param:
2468                         retval = _equalParam(a, b);
2469                         break;
2470                 case T_Aggref:
2471                         retval = _equalAggref(a, b);
2472                         break;
2473                 case T_WindowFunc:
2474                         retval = _equalWindowFunc(a, b);
2475                         break;
2476                 case T_ArrayRef:
2477                         retval = _equalArrayRef(a, b);
2478                         break;
2479                 case T_FuncExpr:
2480                         retval = _equalFuncExpr(a, b);
2481                         break;
2482                 case T_NamedArgExpr:
2483                         retval = _equalNamedArgExpr(a, b);
2484                         break;
2485                 case T_OpExpr:
2486                         retval = _equalOpExpr(a, b);
2487                         break;
2488                 case T_DistinctExpr:
2489                         retval = _equalDistinctExpr(a, b);
2490                         break;
2491                 case T_NullIfExpr:
2492                         retval = _equalNullIfExpr(a, b);
2493                         break;
2494                 case T_ScalarArrayOpExpr:
2495                         retval = _equalScalarArrayOpExpr(a, b);
2496                         break;
2497                 case T_BoolExpr:
2498                         retval = _equalBoolExpr(a, b);
2499                         break;
2500                 case T_SubLink:
2501                         retval = _equalSubLink(a, b);
2502                         break;
2503                 case T_SubPlan:
2504                         retval = _equalSubPlan(a, b);
2505                         break;
2506                 case T_AlternativeSubPlan:
2507                         retval = _equalAlternativeSubPlan(a, b);
2508                         break;
2509                 case T_FieldSelect:
2510                         retval = _equalFieldSelect(a, b);
2511                         break;
2512                 case T_FieldStore:
2513                         retval = _equalFieldStore(a, b);
2514                         break;
2515                 case T_RelabelType:
2516                         retval = _equalRelabelType(a, b);
2517                         break;
2518                 case T_CoerceViaIO:
2519                         retval = _equalCoerceViaIO(a, b);
2520                         break;
2521                 case T_ArrayCoerceExpr:
2522                         retval = _equalArrayCoerceExpr(a, b);
2523                         break;
2524                 case T_ConvertRowtypeExpr:
2525                         retval = _equalConvertRowtypeExpr(a, b);
2526                         break;
2527                 case T_CollateExpr:
2528                         retval = _equalCollateExpr(a, b);
2529                         break;
2530                 case T_CaseExpr:
2531                         retval = _equalCaseExpr(a, b);
2532                         break;
2533                 case T_CaseWhen:
2534                         retval = _equalCaseWhen(a, b);
2535                         break;
2536                 case T_CaseTestExpr:
2537                         retval = _equalCaseTestExpr(a, b);
2538                         break;
2539                 case T_ArrayExpr:
2540                         retval = _equalArrayExpr(a, b);
2541                         break;
2542                 case T_RowExpr:
2543                         retval = _equalRowExpr(a, b);
2544                         break;
2545                 case T_RowCompareExpr:
2546                         retval = _equalRowCompareExpr(a, b);
2547                         break;
2548                 case T_CoalesceExpr:
2549                         retval = _equalCoalesceExpr(a, b);
2550                         break;
2551                 case T_MinMaxExpr:
2552                         retval = _equalMinMaxExpr(a, b);
2553                         break;
2554                 case T_XmlExpr:
2555                         retval = _equalXmlExpr(a, b);
2556                         break;
2557                 case T_NullTest:
2558                         retval = _equalNullTest(a, b);
2559                         break;
2560                 case T_BooleanTest:
2561                         retval = _equalBooleanTest(a, b);
2562                         break;
2563                 case T_CoerceToDomain:
2564                         retval = _equalCoerceToDomain(a, b);
2565                         break;
2566                 case T_CoerceToDomainValue:
2567                         retval = _equalCoerceToDomainValue(a, b);
2568                         break;
2569                 case T_SetToDefault:
2570                         retval = _equalSetToDefault(a, b);
2571                         break;
2572                 case T_CurrentOfExpr:
2573                         retval = _equalCurrentOfExpr(a, b);
2574                         break;
2575                 case T_TargetEntry:
2576                         retval = _equalTargetEntry(a, b);
2577                         break;
2578                 case T_RangeTblRef:
2579                         retval = _equalRangeTblRef(a, b);
2580                         break;
2581                 case T_FromExpr:
2582                         retval = _equalFromExpr(a, b);
2583                         break;
2584                 case T_JoinExpr:
2585                         retval = _equalJoinExpr(a, b);
2586                         break;
2587
2588                         /*
2589                          * RELATION NODES
2590                          */
2591                 case T_PathKey:
2592                         retval = _equalPathKey(a, b);
2593                         break;
2594                 case T_RestrictInfo:
2595                         retval = _equalRestrictInfo(a, b);
2596                         break;
2597                 case T_PlaceHolderVar:
2598                         retval = _equalPlaceHolderVar(a, b);
2599                         break;
2600                 case T_SpecialJoinInfo:
2601                         retval = _equalSpecialJoinInfo(a, b);
2602                         break;
2603                 case T_AppendRelInfo:
2604                         retval = _equalAppendRelInfo(a, b);
2605                         break;
2606                 case T_PlaceHolderInfo:
2607                         retval = _equalPlaceHolderInfo(a, b);
2608                         break;
2609
2610                 case T_List:
2611                 case T_IntList:
2612                 case T_OidList:
2613                         retval = _equalList(a, b);
2614                         break;
2615
2616                 case T_Integer:
2617                 case T_Float:
2618                 case T_String:
2619                 case T_BitString:
2620                 case T_Null:
2621                         retval = _equalValue(a, b);
2622                         break;
2623
2624                         /*
2625                          * PARSE NODES
2626                          */
2627                 case T_Query:
2628                         retval = _equalQuery(a, b);
2629                         break;
2630                 case T_InsertStmt:
2631                         retval = _equalInsertStmt(a, b);
2632                         break;
2633                 case T_DeleteStmt:
2634                         retval = _equalDeleteStmt(a, b);
2635                         break;
2636                 case T_UpdateStmt:
2637                         retval = _equalUpdateStmt(a, b);
2638                         break;
2639                 case T_SelectStmt:
2640                         retval = _equalSelectStmt(a, b);
2641                         break;
2642                 case T_SetOperationStmt:
2643                         retval = _equalSetOperationStmt(a, b);
2644                         break;
2645                 case T_AlterTableStmt:
2646                         retval = _equalAlterTableStmt(a, b);
2647                         break;
2648                 case T_AlterTableCmd:
2649                         retval = _equalAlterTableCmd(a, b);
2650                         break;
2651                 case T_AlterDomainStmt:
2652                         retval = _equalAlterDomainStmt(a, b);
2653                         break;
2654                 case T_GrantStmt:
2655                         retval = _equalGrantStmt(a, b);
2656                         break;
2657                 case T_GrantRoleStmt:
2658                         retval = _equalGrantRoleStmt(a, b);
2659                         break;
2660                 case T_AlterDefaultPrivilegesStmt:
2661                         retval = _equalAlterDefaultPrivilegesStmt(a, b);
2662                         break;
2663                 case T_DeclareCursorStmt:
2664                         retval = _equalDeclareCursorStmt(a, b);
2665                         break;
2666                 case T_ClosePortalStmt:
2667                         retval = _equalClosePortalStmt(a, b);
2668                         break;
2669                 case T_ClusterStmt:
2670                         retval = _equalClusterStmt(a, b);
2671                         break;
2672                 case T_CopyStmt:
2673                         retval = _equalCopyStmt(a, b);
2674                         break;
2675                 case T_CreateStmt:
2676                         retval = _equalCreateStmt(a, b);
2677                         break;
2678                 case T_InhRelation:
2679                         retval = _equalInhRelation(a, b);
2680                         break;
2681                 case T_DefineStmt:
2682                         retval = _equalDefineStmt(a, b);
2683                         break;
2684                 case T_DropStmt:
2685                         retval = _equalDropStmt(a, b);
2686                         break;
2687                 case T_TruncateStmt:
2688                         retval = _equalTruncateStmt(a, b);
2689                         break;
2690                 case T_CommentStmt:
2691                         retval = _equalCommentStmt(a, b);
2692                         break;
2693                 case T_SecLabelStmt:
2694                         retval = _equalSecLabelStmt(a, b);
2695                         break;
2696                 case T_FetchStmt:
2697                         retval = _equalFetchStmt(a, b);
2698                         break;
2699                 case T_IndexStmt:
2700                         retval = _equalIndexStmt(a, b);
2701                         break;
2702                 case T_CreateFunctionStmt:
2703                         retval = _equalCreateFunctionStmt(a, b);
2704                         break;
2705                 case T_FunctionParameter:
2706                         retval = _equalFunctionParameter(a, b);
2707                         break;
2708                 case T_AlterFunctionStmt:
2709                         retval = _equalAlterFunctionStmt(a, b);
2710                         break;
2711                 case T_DoStmt:
2712                         retval = _equalDoStmt(a, b);
2713                         break;
2714                 case T_RenameStmt:
2715                         retval = _equalRenameStmt(a, b);
2716                         break;
2717                 case T_AlterObjectSchemaStmt:
2718                         retval = _equalAlterObjectSchemaStmt(a, b);
2719                         break;
2720                 case T_AlterOwnerStmt:
2721                         retval = _equalAlterOwnerStmt(a, b);
2722                         break;
2723                 case T_RuleStmt:
2724                         retval = _equalRuleStmt(a, b);
2725                         break;
2726                 case T_NotifyStmt:
2727                         retval = _equalNotifyStmt(a, b);
2728                         break;
2729                 case T_ListenStmt:
2730                         retval = _equalListenStmt(a, b);
2731                         break;
2732                 case T_UnlistenStmt:
2733                         retval = _equalUnlistenStmt(a, b);
2734                         break;
2735                 case T_TransactionStmt:
2736                         retval = _equalTransactionStmt(a, b);
2737                         break;
2738                 case T_CompositeTypeStmt:
2739                         retval = _equalCompositeTypeStmt(a, b);
2740                         break;
2741                 case T_CreateEnumStmt:
2742                         retval = _equalCreateEnumStmt(a, b);
2743                         break;
2744                 case T_CreateRangeStmt:
2745                         retval = _equalCreateRangeStmt(a, b);
2746                         break;
2747                 case T_AlterEnumStmt:
2748                         retval = _equalAlterEnumStmt(a, b);
2749                         break;
2750                 case T_ViewStmt:
2751                         retval = _equalViewStmt(a, b);
2752                         break;
2753                 case T_LoadStmt:
2754                         retval = _equalLoadStmt(a, b);
2755                         break;
2756                 case T_CreateDomainStmt:
2757                         retval = _equalCreateDomainStmt(a, b);
2758                         break;
2759                 case T_CreateOpClassStmt:
2760                         retval = _equalCreateOpClassStmt(a, b);
2761                         break;
2762                 case T_CreateOpClassItem:
2763                         retval = _equalCreateOpClassItem(a, b);
2764                         break;
2765                 case T_CreateOpFamilyStmt:
2766                         retval = _equalCreateOpFamilyStmt(a, b);
2767                         break;
2768                 case T_AlterOpFamilyStmt:
2769                         retval = _equalAlterOpFamilyStmt(a, b);
2770                         break;
2771                 case T_CreatedbStmt:
2772                         retval = _equalCreatedbStmt(a, b);
2773                         break;
2774                 case T_AlterDatabaseStmt:
2775                         retval = _equalAlterDatabaseStmt(a, b);
2776                         break;
2777                 case T_AlterDatabaseSetStmt:
2778                         retval = _equalAlterDatabaseSetStmt(a, b);
2779                         break;
2780                 case T_DropdbStmt:
2781                         retval = _equalDropdbStmt(a, b);
2782                         break;
2783                 case T_VacuumStmt:
2784                         retval = _equalVacuumStmt(a, b);
2785                         break;
2786                 case T_ExplainStmt:
2787                         retval = _equalExplainStmt(a, b);
2788                         break;
2789                 case T_CreateSeqStmt:
2790                         retval = _equalCreateSeqStmt(a, b);
2791                         break;
2792                 case T_AlterSeqStmt:
2793                         retval = _equalAlterSeqStmt(a, b);
2794                         break;
2795                 case T_VariableSetStmt:
2796                         retval = _equalVariableSetStmt(a, b);
2797                         break;
2798                 case T_VariableShowStmt:
2799                         retval = _equalVariableShowStmt(a, b);
2800                         break;
2801                 case T_DiscardStmt:
2802                         retval = _equalDiscardStmt(a, b);
2803                         break;
2804                 case T_CreateTableSpaceStmt:
2805                         retval = _equalCreateTableSpaceStmt(a, b);
2806                         break;
2807                 case T_DropTableSpaceStmt:
2808                         retval = _equalDropTableSpaceStmt(a, b);
2809                         break;
2810                 case T_AlterTableSpaceOptionsStmt:
2811                         retval = _equalAlterTableSpaceOptionsStmt(a, b);
2812                         break;
2813                 case T_CreateExtensionStmt:
2814                         retval = _equalCreateExtensionStmt(a, b);
2815                         break;
2816                 case T_AlterExtensionStmt:
2817                         retval = _equalAlterExtensionStmt(a, b);
2818                         break;
2819                 case T_AlterExtensionContentsStmt:
2820                         retval = _equalAlterExtensionContentsStmt(a, b);
2821                         break;
2822                 case T_CreateFdwStmt:
2823                         retval = _equalCreateFdwStmt(a, b);
2824                         break;
2825                 case T_AlterFdwStmt:
2826                         retval = _equalAlterFdwStmt(a, b);
2827                         break;
2828                 case T_CreateForeignServerStmt:
2829                         retval = _equalCreateForeignServerStmt(a, b);
2830                         break;
2831                 case T_AlterForeignServerStmt:
2832                         retval = _equalAlterForeignServerStmt(a, b);
2833                         break;
2834                 case T_CreateUserMappingStmt:
2835                         retval = _equalCreateUserMappingStmt(a, b);
2836                         break;
2837                 case T_AlterUserMappingStmt:
2838                         retval = _equalAlterUserMappingStmt(a, b);
2839                         break;
2840                 case T_DropUserMappingStmt:
2841                         retval = _equalDropUserMappingStmt(a, b);
2842                         break;
2843                 case T_CreateForeignTableStmt:
2844                         retval = _equalCreateForeignTableStmt(a, b);
2845                         break;
2846                 case T_CreateTrigStmt:
2847                         retval = _equalCreateTrigStmt(a, b);
2848                         break;
2849                 case T_CreatePLangStmt:
2850                         retval = _equalCreatePLangStmt(a, b);
2851                         break;
2852                 case T_CreateRoleStmt:
2853                         retval = _equalCreateRoleStmt(a, b);
2854                         break;
2855                 case T_AlterRoleStmt:
2856                         retval = _equalAlterRoleStmt(a, b);
2857                         break;
2858                 case T_AlterRoleSetStmt:
2859                         retval = _equalAlterRoleSetStmt(a, b);
2860                         break;
2861                 case T_DropRoleStmt:
2862                         retval = _equalDropRoleStmt(a, b);
2863                         break;
2864                 case T_LockStmt:
2865                         retval = _equalLockStmt(a, b);
2866                         break;
2867                 case T_ConstraintsSetStmt:
2868                         retval = _equalConstraintsSetStmt(a, b);
2869                         break;
2870                 case T_ReindexStmt:
2871                         retval = _equalReindexStmt(a, b);
2872                         break;
2873                 case T_CheckPointStmt:
2874                         retval = true;
2875                         break;
2876                 case T_CreateSchemaStmt:
2877                         retval = _equalCreateSchemaStmt(a, b);
2878                         break;
2879                 case T_CreateConversionStmt:
2880                         retval = _equalCreateConversionStmt(a, b);
2881                         break;
2882                 case T_CreateCastStmt:
2883                         retval = _equalCreateCastStmt(a, b);
2884                         break;
2885                 case T_PrepareStmt:
2886                         retval = _equalPrepareStmt(a, b);
2887                         break;
2888                 case T_ExecuteStmt:
2889                         retval = _equalExecuteStmt(a, b);
2890                         break;
2891                 case T_DeallocateStmt:
2892                         retval = _equalDeallocateStmt(a, b);
2893                         break;
2894                 case T_DropOwnedStmt:
2895                         retval = _equalDropOwnedStmt(a, b);
2896                         break;
2897                 case T_ReassignOwnedStmt:
2898                         retval = _equalReassignOwnedStmt(a, b);
2899                         break;
2900                 case T_AlterTSDictionaryStmt:
2901                         retval = _equalAlterTSDictionaryStmt(a, b);
2902                         break;
2903                 case T_AlterTSConfigurationStmt:
2904                         retval = _equalAlterTSConfigurationStmt(a, b);
2905                         break;
2906
2907                 case T_A_Expr:
2908                         retval = _equalAExpr(a, b);
2909                         break;
2910                 case T_ColumnRef:
2911                         retval = _equalColumnRef(a, b);
2912                         break;
2913                 case T_ParamRef:
2914                         retval = _equalParamRef(a, b);
2915                         break;
2916                 case T_A_Const:
2917                         retval = _equalAConst(a, b);
2918                         break;
2919                 case T_FuncCall:
2920                         retval = _equalFuncCall(a, b);
2921                         break;
2922                 case T_A_Star:
2923                         retval = _equalAStar(a, b);
2924                         break;
2925                 case T_A_Indices:
2926                         retval = _equalAIndices(a, b);
2927                         break;
2928                 case T_A_Indirection:
2929                         retval = _equalA_Indirection(a, b);
2930                         break;
2931                 case T_A_ArrayExpr:
2932                         retval = _equalA_ArrayExpr(a, b);
2933                         break;
2934                 case T_ResTarget:
2935                         retval = _equalResTarget(a, b);
2936                         break;
2937                 case T_TypeCast:
2938                         retval = _equalTypeCast(a, b);
2939                         break;
2940                 case T_CollateClause:
2941                         retval = _equalCollateClause(a, b);
2942                         break;
2943                 case T_SortBy:
2944                         retval = _equalSortBy(a, b);
2945                         break;
2946                 case T_WindowDef:
2947                         retval = _equalWindowDef(a, b);
2948                         break;
2949                 case T_RangeSubselect:
2950                         retval = _equalRangeSubselect(a, b);
2951                         break;
2952                 case T_RangeFunction:
2953                         retval = _equalRangeFunction(a, b);
2954                         break;
2955                 case T_TypeName:
2956                         retval = _equalTypeName(a, b);
2957                         break;
2958                 case T_IndexElem:
2959                         retval = _equalIndexElem(a, b);
2960                         break;
2961                 case T_ColumnDef:
2962                         retval = _equalColumnDef(a, b);
2963                         break;
2964                 case T_Constraint:
2965                         retval = _equalConstraint(a, b);
2966                         break;
2967                 case T_DefElem:
2968                         retval = _equalDefElem(a, b);
2969                         break;
2970                 case T_LockingClause:
2971                         retval = _equalLockingClause(a, b);
2972                         break;
2973                 case T_RangeTblEntry:
2974                         retval = _equalRangeTblEntry(a, b);
2975                         break;
2976                 case T_SortGroupClause:
2977                         retval = _equalSortGroupClause(a, b);
2978                         break;
2979                 case T_WindowClause:
2980                         retval = _equalWindowClause(a, b);
2981                         break;
2982                 case T_RowMarkClause:
2983                         retval = _equalRowMarkClause(a, b);
2984                         break;
2985                 case T_WithClause:
2986                         retval = _equalWithClause(a, b);
2987                         break;
2988                 case T_CommonTableExpr:
2989                         retval = _equalCommonTableExpr(a, b);
2990                         break;
2991                 case T_PrivGrantee:
2992                         retval = _equalPrivGrantee(a, b);
2993                         break;
2994                 case T_FuncWithArgs:
2995                         retval = _equalFuncWithArgs(a, b);
2996                         break;
2997                 case T_AccessPriv:
2998                         retval = _equalAccessPriv(a, b);
2999                         break;
3000                 case T_XmlSerialize:
3001                         retval = _equalXmlSerialize(a, b);
3002                         break;
3003
3004                 default:
3005                         elog(ERROR, "unrecognized node type: %d",
3006                                  (int) nodeTag(a));
3007                         retval = false;         /* keep compiler quiet */
3008                         break;
3009         }
3010
3011         return retval;
3012 }