From: Bruce Momjian Date: Tue, 11 Aug 1998 02:32:00 +0000 (+0000) Subject: New findoidjoins examines oid columns to find join relationships. X-Git-Tag: REL6_4_2~678 X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=85c165cd4c19a4d837ec914ce26091cebef68be4;p=postgresql New findoidjoins examines oid columns to find join relationships. --- diff --git a/contrib/README b/contrib/README index 3a7fb56af6..bf4d10ebc5 100644 --- a/contrib/README +++ b/contrib/README @@ -18,6 +18,11 @@ earthdistance - Operator for computing earth distance for two points by Hal Snyder +findoidjoins - + Finds the joins used by oid columns by examining the actual + values in the oid columns and row oids. + by Bruce Momjian + fulltextindex - Full text indexing using triggers by Maarten Boekhold diff --git a/contrib/findoidjoins/Makefile b/contrib/findoidjoins/Makefile new file mode 100644 index 0000000000..e55b33a0ea --- /dev/null +++ b/contrib/findoidjoins/Makefile @@ -0,0 +1,20 @@ +# +# Makefile, requires pgsql/contrib/pginterface +# +# +PGINTERFACE = pginterface.o halt.o # these have to be in your library search path +TARGET = findoidjoins +CFLAGS = -g -Wall -I. -I../../src/interfaces/libpq -I/usr/local/pgsql/include +LDFLAGS = -L/usr/local/pgsql/lib -lpq + +all : $(TARGET) + +findoidjoins: $(PGINTERFACE) findoidjoins.c + gcc -o $@ $(CFLAGS) $@.c $(PGINTERFACE) $(LDFLAGS) + +clean: + rm -f *.o $(TARGET) log core + +install: + install -s -o bin -g bin $(TARGET) /usr/local/pgsql/bin + diff --git a/contrib/findoidjoins/README b/contrib/findoidjoins/README new file mode 100644 index 0000000000..7cd9abe9ad --- /dev/null +++ b/contrib/findoidjoins/README @@ -0,0 +1,68 @@ + + + findoidjoins + +This program scans the a database, and prints oid fields, and the tables +they join to. PostgreSQL version 6.3.2 crashes with aggregates on +views, so I have removed the view pg_user from the list of relations to +examine. + +Run on am empty database, it returns the system join relationships: + +--------------------------------------------------------------------------- + +Join pg_aggregate.aggfinaltype => pg_proc.oid +Join pg_aggregate.aggfinaltype => pg_type.oid +Join pg_aggregate.aggowner => pg_proc.oid +Join pg_aggregate.aggbasetype => pg_proc.oid +Join pg_aggregate.aggbasetype => pg_type.oid +Join pg_aggregate.aggtranstype1 => pg_proc.oid +Join pg_aggregate.aggtranstype1 => pg_type.oid +Join pg_aggregate.aggtranstype2 => pg_type.oid +Join pg_am.amowner => pg_proc.oid +Join pg_amop.amopid => pg_am.oid +Join pg_amop.amopopr => pg_operator.oid +Join pg_amop.amopclaid => pg_opclass.oid +Join pg_amproc.amproc => pg_operator.oid +Join pg_amproc.amproc => pg_proc.oid +Join pg_amproc.amopclaid => pg_opclass.oid +Join pg_amproc.amopclaid => pg_operator.oid +Join pg_amproc.amopclaid => pg_proc.oid +Join pg_amproc.amid => pg_am.oid +Join pg_attribute.attrelid => pg_class.oid +Join pg_attribute.atttypid => pg_type.oid +Join pg_class.relam => pg_am.oid +Join pg_class.reltype => pg_type.oid +Join pg_class.relowner => pg_proc.oid +Join pg_description.objoid => pg_proc.oid +Join pg_description.objoid => pg_type.oid +Join pg_index.indexrelid => pg_class.oid +Join pg_index.indrelid => pg_class.oid +Join pg_index.indproc => pg_proc.oid +Join pg_opclass.opcdeftype => pg_type.oid +Join pg_operator.oprcom => pg_operator.oid +Join pg_operator.oprrsortop => pg_operator.oid +Join pg_operator.oprlsortop => pg_operator.oid +Join pg_operator.oprnegate => pg_operator.oid +Join pg_operator.oprresult => pg_type.oid +Join pg_operator.oprright => pg_type.oid +Join pg_operator.oprleft => pg_type.oid +Join pg_operator.oprowner => pg_proc.oid +Join pg_parg.partype => pg_type.oid +Join pg_parg.parproid => pg_operator.oid +Join pg_parg.parproid => pg_proc.oid +Join pg_proc.prolang => pg_language.oid +Join pg_proc.prorettype => pg_type.oid +Join pg_proc.proowner => pg_proc.oid +Join pg_rewrite.ev_class => pg_class.oid +Join pg_statistic.starelid => pg_class.oid +Join pg_type.typrelid => pg_class.oid +Join pg_type.typowner => pg_proc.oid +Join pg_type.typelem => pg_operator.oid +Join pg_type.typelem => pg_proc.oid +Join pg_type.typelem => pg_type.oid + + +--------------------------------------------------------------------------- + +Bruce Momjian (root@candle.pha.pa.us) diff --git a/contrib/findoidjoins/findoidjoins.c b/contrib/findoidjoins/findoidjoins.c new file mode 100644 index 0000000000..ad897c3fc1 --- /dev/null +++ b/contrib/findoidjoins/findoidjoins.c @@ -0,0 +1,93 @@ +/* + * findoidjoins.c, required pgsql/contrib/pginterface + * + */ + +#include +#include "halt.h" +#include +#include "pginterface.h" + +PGresult *attres, *relres; + +int +main(int argc, char **argv) +{ + char query[4000]; + char relname[256]; + char relname2[256]; + char attname[256]; + int count; + + if (argc != 2) + halt("Usage: %s database\n", argv[0]); + + connectdb(argv[1], NULL, NULL, NULL, NULL); + on_error_continue(); + on_error_stop(); + + doquery("BEGIN WORK"); + doquery("\ + DECLARE c_attributes BINARY CURSOR FOR \ + SELECT relname, a.attname \ + FROM pg_class c, pg_attribute a, pg_type t \ + WHERE a.attnum > 0 AND \ + relkind = 'r' AND \ + typname = 'oid' AND \ + a.attrelid = c.oid AND \ + a.atttypid = t.oid \ + ORDER BY 1; \ + "); + doquery("FETCH ALL IN c_attributes"); + attres = get_result(); + + doquery("\ + DECLARE c_relations BINARY CURSOR FOR \ + SELECT relname \ + FROM pg_class c \ + WHERE relkind = 'r' AND \ + relname != 'pg_user' \ + ORDER BY 1; \ + "); + doquery("FETCH ALL IN c_relations"); + relres = get_result(); + + set_result(attres); + while (fetch(relname, attname) != END_OF_TUPLES) + { + set_result(relres); + reset_fetch(); + while (fetch(relname2) != END_OF_TUPLES) + { + unset_result(relres); + sprintf(query,"\ + DECLARE c_matches BINARY CURSOR FOR \ + SELECT count(*) + FROM %s t1, %s t2 \ + WHERE t1.%s = t2.oid", relname, relname2, attname); + + doquery(query); + doquery("FETCH ALL IN c_matches"); + fetch(&count); + if (count != 0) + printf("Join %s.%s => %s.oid\n", relname, attname, relname2); + doquery("CLOSE c_matches"); + set_result(relres); + } + set_result(attres); + } + + set_result(relres); + doquery("CLOSE c_relations"); + PQclear(relres); + + set_result(attres); + doquery("CLOSE c_attributes"); + PQclear(attres); + unset_result(attres); + + doquery("COMMIT WORK"); + + disconnectdb(); + return 0; +} diff --git a/contrib/pginterface/README b/contrib/pginterface/README index 42fd0a5dfe..32b0957242 100644 --- a/contrib/pginterface/README +++ b/contrib/pginterface/README @@ -22,6 +22,11 @@ useful if you are running the query engine on a system with a different architecture than the database server. If you pass a NULL pointer, the column is skipped, and you can use libpq to handle it as you wish. +There are two functions, get_result() and set_result, that allow you to +handle multiple result sets at the same time. + +There is a reset_fetch() that starts the fetch back at the beginning. + There is a demo program called pginsert that demonstrates how the library can be used. diff --git a/contrib/pginterface/pginterface.c b/contrib/pginterface/pginterface.c index 3c19943c26..52b1011e76 100644 --- a/contrib/pginterface/pginterface.c +++ b/contrib/pginterface/pginterface.c @@ -22,6 +22,9 @@ static PGresult *res = NULL; static int on_error_state = ON_ERROR_STOP; +static in_result_block = false; +static was_get_unset_result = false; + /* LOCAL VARIABLES */ static int tuple; @@ -64,9 +67,10 @@ disconnectdb() PGresult * doquery(char *query) { - if (res != NULL) + if (res != NULL && in_result_block == false && was_get_unset_result == false) PQclear(res); + was_get_unset_result = false; res = PQexec(conn, query); if (on_error_state == ON_ERROR_STOP && @@ -187,3 +191,69 @@ on_error_continue() { on_error_state = ON_ERROR_CONTINUE; } + + +/* +** +** get_result +** +*/ +PGresult *get_result() +{ + was_get_unset_result = true; + /* we have to store the fetch location somewhere */ + memcpy(&res->cmdStatus[CMDSTATUS_LEN-sizeof(tuple)],&tuple, sizeof(tuple)); + return res; +} + +/* +** +** set_result +** +*/ +void set_result(PGresult *newres) +{ + if (newres == NULL) + halt("set_result called with null result pointer\n"); + + if (res != NULL && was_get_unset_result == false) + if (in_result_block == false) + PQclear(res); + else + memcpy(&res->cmdStatus[CMDSTATUS_LEN-sizeof(tuple)], &tuple, sizeof(tuple)); + + in_result_block = true; + was_get_unset_result = false; + memcpy(&tuple, &newres->cmdStatus[CMDSTATUS_LEN-sizeof(tuple)], sizeof(tuple)); + res = newres; +} + + +/* +** +** unset_result +** +*/ +void unset_result(PGresult *oldres) +{ + if (oldres == NULL) + halt("unset_result called with null result pointer\n"); + + if (in_result_block == false) + halt("Unset of result without being set.\n"); + + was_get_unset_result = true; + memcpy(&oldres->cmdStatus[CMDSTATUS_LEN-sizeof(tuple)], &tuple, sizeof(tuple)); + in_result_block = false; +} + +/* +** +** reset_fetch +** +*/ +void reset_fetch() +{ + tuple = 0; +} + diff --git a/contrib/pginterface/pginterface.h b/contrib/pginterface/pginterface.h index ad8320aca9..5f856ac016 100644 --- a/contrib/pginterface/pginterface.h +++ b/contrib/pginterface/pginterface.h @@ -10,5 +10,9 @@ int fetch(void *param,...); int fetchwithnulls(void *param,...); void on_error_continue(); void on_error_stop(); +PGresult *get_result(); +void set_result(PGresult *newres); +void unset_result(PGresult *oldres); +void reset_fetch(); #define END_OF_TUPLES (-1) diff --git a/doc/src/graphics/catalogs.ps b/doc/src/graphics/catalogs.ps new file mode 100644 index 0000000000..21ef9fdcf0 --- /dev/null +++ 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m 519 494 l gs col-1 s gr +% Polyline +n 499 514 m 519 514 l gs col-1 s gr +% Polyline +n 599 104 m 599 79 l 514 79 l 514 104 l clp gs col-1 s gr +% Polyline +n 624 124 m 624 104 l 514 104 l 514 124 l clp gs col-1 s gr +% Polyline +n 459 534 m 499 534 l gs col-1 s gr +% Polyline +n 499 534 m 519 534 l gs col-1 s gr +% Polyline +n 459 534 m 459 514 l gs col-1 s gr +% Polyline +n 384 229 m 499 229 l 499 314 l 519 314 l gs col-1 s gr +% Polyline +n 624 114 m 639 114 l 639 354 l 619 354 l gs col-1 s gr +% Polyline +n 384 454 m 419 454 l 419 414 l 739 414 l gs col-1 s gr +% Polyline +n 384 449 m 399 449 l 399 399 l 699 399 l 699 54 l 739 54 l gs col-1 s gr +% Polyline +n 624 449 m 719 449 l 719 94 l 739 94 l gs col-1 s gr +% Polyline +n 679 134 m 744 134 l gs col-1 s gr +% Polyline +n 674 159 m 684 169 l gs col-1 s gr +% Polyline +n 839 74 m 859 74 l 859 249 l 844 249 l gs col-1 s gr +% Polyline +n 844 254 m 859 254 l 859 434 l 839 434 l gs col-1 s gr +% Polyline +n 624 269 m 679 269 l 679 114 l 739 114 l gs col-1 s gr +% Polyline +n 624 274 m 679 274 l 679 474 l 739 474 l gs col-1 s gr +% Polyline +n 521 284 m 514 284 514 357 7 arcto 4 {pop} repeat 514 364 617 364 7 arcto 4 {pop} repeat 624 364 624 291 7 arcto 4 {pop} repeat 624 284 521 284 7 arcto 4 {pop} repeat clp gs col-1 s gr +% Polyline +n 179 604 m 179 579 l 74 579 l 74 604 l clp gs col-1 s gr +% Polyline +n 184 704 m 184 679 l 74 679 l 74 704 l clp gs col-1 s gr +% Polyline +n 81 604 m 74 604 74 617 7 arcto 4 {pop} repeat 74 624 177 624 7 arcto 4 {pop} repeat 184 624 184 611 7 arcto 4 {pop} repeat 184 604 81 604 7 arcto 4 {pop} repeat clp gs col-1 s gr +% Polyline +n 184 724 m 184 704 l 74 704 l 74 724 l clp gs col-1 s gr +% Polyline +n 179 614 m 199 614 l 199 714 l 184 714 l gs col-1 s gr +% Polyline +n 184 764 m 184 724 l 74 724 l 74 764 l clp gs col-1 s gr +% Polyline +n 184 784 m 184 764 l 74 764 l 74 784 l clp gs col-1 s gr +% Polyline +n 81 724 m 74 724 74 777 7 arcto 4 {pop} repeat 74 784 177 784 7 arcto 4 {pop} repeat 184 784 184 731 7 arcto 4 {pop} repeat 184 724 81 724 7 arcto 4 {pop} repeat clp gs col-1 s gr +% Polyline +n 166 804 m 159 804 159 812 7 arcto 4 {pop} repeat 159 819 172 819 7 arcto 4 {pop} repeat 179 819 179 811 7 arcto 4 {pop} repeat 179 804 166 804 7 arcto 4 {pop} repeat clp gs col-1 s gr +% Polyline +n 439 654 m 439 279 l gs col-1 s gr +% Polyline + [4.4] 0 setdash +n 359 94 m 419 94 l 419 269 l 514 269 l gs col-1 s gr [] 0 setdash +% Polyline + [4.4] 0 setdash +n 384 234 m 479 234 l 479 334 l 519 334 l gs col-1 s gr [] 0 setdash +% Polyline + [4.4] 0 setdash +n 239 739 m 279 739 l gs col-1 s gr [] 0 setdash +% Polyline +n 239 759 m 279 759 l gs col-1 s gr +% Polyline + [4.4] 0 setdash +n 379 314 m 399 314 l gs col-1 s gr [] 0 setdash +% Polyline + [4.4] 0 setdash +n 379 334 m 399 334 l gs col-1 s gr [] 0 setdash +% Polyline + [4.4] 0 setdash +n 399 294 m 399 334 l gs col-1 s gr [] 0 setdash +% Polyline +n 399 274 m 399 294 l gs col-1 s gr +% Polyline + [4.4] 0 setdash +n 619 614 m 639 614 l gs col-1 s gr [] 0 setdash +% Polyline + [4.4] 0 setdash +n 619 594 m 639 594 l gs col-1 s gr [] 0 setdash +% Polyline +n 521 464 m 514 464 514 677 7 arcto 4 {pop} repeat 514 684 617 684 7 arcto 4 {pop} repeat 624 684 624 471 7 arcto 4 {pop} repeat 624 464 521 464 7 arcto 4 {pop} repeat clp gs col-1 s gr +% Polyline + [4.4] 0 setdash +n 639 594 m 639 614 l gs col-1 s gr [] 0 setdash +% Polyline + [4.4] 0 setdash +n 619 574 m 639 574 l gs col-1 s gr [] 0 setdash +% Polyline + [4.4] 0 setdash +n 619 554 m 639 554 l gs col-1 s gr [] 0 setdash +% Polyline + [4.4] 0 setdash +n 624 454 m 639 454 l 639 594 l gs col-1 s gr [] 0 setdash +% Polyline + [4.4] 0 setdash +n 619 654 m 659 654 l gs col-1 s gr [] 0 setdash +% Polyline + [4.4] 0 setdash +n 619 674 m 659 674 l gs col-1 s gr [] 0 setdash +% Polyline + [4.4] 0 setdash +n 659 674 m 659 654 l gs col-1 s gr [] 0 setdash +% Polyline +n 624 279 m 659 279 l 659 634 l gs col-1 s gr +% Polyline + [4.4] 0 setdash +n 659 634 m 659 654 l gs col-1 s gr [] 0 setdash +% Polyline +n 154 184 m 154 159 l 69 159 l 69 184 l clp gs col-1 s gr +% Polyline +n 76 184 m 69 184 69 237 7 arcto 4 {pop} repeat 69 244 172 244 7 arcto 4 {pop} repeat 179 244 179 191 7 arcto 4 {pop} repeat 179 184 76 184 7 arcto 4 {pop} repeat clp gs col-1 s gr +% Polyline +n 69 224 m 179 224 l gs col-1 s gr +% Polyline +n 174 414 m 194 414 l gs col-1 s gr +% Polyline +n 179 399 m 199 399 l gs col-1 s gr +% Polyline +n 179 394 m 199 394 l gs col-1 s gr +% Polyline +n 179 389 m 199 389 l gs col-1 s gr +% Polyline +n 179 404 m 179 384 l 69 384 l 69 404 l clp gs col-1 s gr +% Polyline +n 154 384 m 154 359 l 69 359 l 69 384 l clp gs col-1 s gr +% Polyline +n 179 424 m 179 404 l 69 404 l 69 424 l clp gs col-1 s gr +% Polyline +n 359 224 m 359 199 l 274 199 l 274 224 l clp gs col-1 s gr +% Polyline +n 384 244 m 384 224 l 274 224 l 274 244 l clp gs col-1 s gr +% Polyline +n 384 344 m 384 244 l 274 244 l 274 344 l clp gs col-1 s gr +% Polyline +n 339 44 m 339 19 l 254 19 l 254 44 l clp gs col-1 s gr +% Polyline +n 261 44 m 254 44 254 137 7 arcto 4 {pop} repeat 254 144 357 144 7 arcto 4 {pop} repeat 364 144 364 51 7 arcto 4 {pop} repeat 364 44 261 44 7 arcto 4 {pop} repeat clp gs col-1 s gr +% Polyline +n 254 124 m 364 124 l gs col-1 s gr +% Polyline +n 819 44 m 819 19 l 734 19 l 734 44 l clp gs col-1 s gr +% Polyline +n 741 44 m 734 44 734 137 7 arcto 4 {pop} repeat 734 144 837 144 7 arcto 4 {pop} repeat 844 144 844 51 7 arcto 4 {pop} repeat 844 44 741 44 7 arcto 4 {pop} repeat clp gs col-1 s gr +% Polyline +n 734 104 m 844 104 l gs col-1 s gr +% Polyline +n 819 244 m 819 219 l 734 219 l 734 244 l clp gs col-1 s gr +% Polyline +n 844 264 m 844 244 l 734 244 l 734 264 l clp gs col-1 s gr +% Polyline +n 599 264 m 599 239 l 514 239 l 514 264 l clp gs col-1 s gr +% Polyline +n 624 284 m 624 264 l 514 264 l 514 284 l clp gs col-1 s gr +% Polyline +n 624 364 m 624 284 l 514 284 l 514 364 l clp gs col-1 s gr +% Polyline +n 514 344 m 624 344 l gs col-1 s gr +% Polyline +n 819 404 m 819 379 l 734 379 l 734 404 l clp gs col-1 s gr +% Polyline +n 741 404 m 734 404 734 477 7 arcto 4 {pop} repeat 734 484 837 484 7 arcto 4 {pop} repeat 844 484 844 411 7 arcto 4 {pop} repeat 844 404 741 404 7 arcto 4 {pop} repeat clp gs col-1 s gr +% Polyline +n 734 464 m 844 464 l gs col-1 s gr +% Polyline +n 599 444 m 599 419 l 514 419 l 514 444 l clp gs col-1 s gr +% Polyline +n 624 464 m 624 444 l 514 444 l 514 464 l clp gs col-1 s gr +% Polyline +n 624 544 m 624 464 l 514 464 l 514 544 l clp gs col-1 s gr +% Polyline +n 624 684 m 624 544 l 514 544 l 514 684 l clp gs col-1 s gr +% Polyline +n 384 464 m 384 444 l 274 444 l 274 464 l clp gs col-1 s gr +% Polyline +n 359 444 m 359 419 l 274 419 l 274 444 l clp gs col-1 s gr +% Polyline +n 384 664 m 384 464 l 274 464 l 274 664 l clp gs col-1 s gr +% Interp Spline +n 219 799 m + 219.84 787.54 219.84 782.54 219 779 curveto + 217.75 773.72 212.79 763.10 209 759 curveto + 205.29 754.99 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