*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.141 2000/02/07 21:24:15 momjian Exp $
+ * $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.142 2000/02/15 03:26:38 thomas Exp $
*
* HISTORY
* AUTHOR DATE MAJOR EVENT
Value *value;
Attr *attr;
+ Ident *ident;
TypeName *typnam;
DefElem *defelt;
SortGroupBy *sortgroupby;
- JoinExpr *joinexpr;
+ JoinExpr *jexpr;
IndexElem *ielem;
RangeVar *range;
RelExpr *relexp;
oper_argtypes, RuleActionList, RuleActionMulti,
opt_column_list, columnList, opt_va_list, va_list,
sort_clause, sortby_list, index_params, index_list, name_list,
- from_clause, from_expr, table_list, opt_array_bounds,
+ from_clause, from_list, opt_array_bounds,
expr_list, attrs, target_list, update_target_list,
def_list, opt_indirection, group_clause, TriggerFuncArgs,
opt_select_limit
%type <boolean> opt_table
%type <boolean> opt_trans
-%type <list> join_clause_with_union, join_clause, join_list, join_qual, using_list
-%type <node> join_expr, using_expr
-%type <str> join_outer
+%type <jexpr> from_expr, join_clause, join_expr
+%type <jexpr> join_clause_with_union, join_expr_with_union
+%type <node> join_outer, join_qual
%type <ival> join_type
+%type <list> using_list
+%type <ident> using_expr
+/***
+#ifdef ENABLE_ORACLE_JOIN_SYNTAX
+%type <list> oracle_list
+%type <jexpr> oracle_expr
+%type <boolean> oracle_outer
+#endif
+***/
%type <list> extract_list, position_list
%type <list> substr_list, substr_from, substr_for, trim_list
%type <node> columnDef
%type <defelt> def_elem
%type <node> def_arg, columnElem, where_clause,
- a_expr, a_expr_or_null, b_expr, com_expr, AexprConst,
+ a_expr, a_expr_or_null, b_expr, c_expr, AexprConst,
in_expr, having_clause
%type <list> row_descriptor, row_list, in_expr_nodes
%type <node> row_expr
%type <list> OptCreateAs, CreateAsList
%type <node> CreateAsElement
%type <value> NumericOnly, FloatOnly, IntegerOnly
-%type <attr> event_object, attr
+%type <attr> event_object, attr, alias_clause
%type <sortgroupby> sortby
%type <ielem> index_elem, func_index
%type <range> table_expr
%type <str> TypeId
%type <node> TableConstraint
-%type <list> ColPrimaryKey, ColConstraintList
+%type <list> ColPrimaryKey, ColQualList, ColQualifier
+%type <list> ColQualListWithNull
%type <node> ColConstraint, ColConstraintElem
+%type <node> ColConstraintWithNull, ColConstraintElemWithNull
%type <ival> key_actions, key_action, key_reference
%type <str> key_match
%type <ival> ConstraintAttributeSpec, ConstraintDeferrabilitySpec,
COALESCE, COLLATE, COLUMN, COMMIT,
CONSTRAINT, CONSTRAINTS, CREATE, CROSS, CURRENT, CURRENT_DATE,
CURRENT_TIME, CURRENT_TIMESTAMP, CURRENT_USER, CURSOR,
- DAY_P, DECIMAL, DECLARE, DEFAULT, DELETE, DESC, DISTINCT, DOUBLE, DROP,
+ DAY_P, DEC, DECIMAL, DECLARE, DEFAULT, DELETE, DESC, DISTINCT, DOUBLE, DROP,
ELSE, END_TRANS, EXCEPT, EXECUTE, EXISTS, EXTRACT,
FALSE_P, FETCH, FLOAT, FOR, FOREIGN, FROM, FULL,
GLOBAL, GRANT, GROUP, HAVING, HOUR_P,
OF, ON, ONLY, OPTION, OR, ORDER, OUTER_P,
PARTIAL, POSITION, PRECISION, PRIMARY, PRIOR, PRIVILEGES, PROCEDURE, PUBLIC,
READ, REFERENCES, RELATIVE, REVOKE, RIGHT, ROLLBACK,
- SCROLL, SECOND_P, SELECT, SET, SUBSTRING,
+ SCROLL, SECOND_P, SELECT, SESSION_USER, SET, SUBSTRING,
TABLE, TEMP, TEMPORARY, THEN, TIME, TIMESTAMP, TIMEZONE_HOUR,
TIMEZONE_MINUTE, TO, TRAILING, TRANSACTION, TRIM, TRUE_P,
UNION, UNIQUE, UPDATE, USER, USING,
VALUES, VARCHAR, VARYING, VIEW,
WHEN, WHERE, WITH, WORK, YEAR_P, ZONE
-
/* Keywords (in SQL3 reserved words) */
%token DEFERRABLE, DEFERRED,
IMMEDIATE, INITIALLY,
}
;
-stmt : AlterTableStmt
- | AlterGroupStmt
+stmt : AlterTableStmt
+ | AlterGroupStmt
| AlterUserStmt
| ClosePortalStmt
| CopyStmt
| CreateStmt
| CreateAsStmt
- | CreateGroupStmt
+ | CreateGroupStmt
| CreateSeqStmt
| CreatePLangStmt
| CreateTrigStmt
| DropStmt
| TruncateStmt
| CommentStmt
- | DropGroupStmt
+ | DropGroupStmt
| DropPLangStmt
| DropTrigStmt
| DropUserStmt
| VariableShowStmt
| VariableResetStmt
| ConstraintsSetStmt
- | /*EMPTY*/
- { $$ = (Node *)NULL; }
+ | /*EMPTY*/
+ { $$ = (Node *)NULL; }
;
/*****************************************************************************
/*****************************************************************************
*
- * Alter a postresql DBMS user
+ * Alter a postgresql DBMS user
*
*
*****************************************************************************/
AlterUserStmt: ALTER USER UserId user_createdb_clause
- user_createuser_clause user_valid_clause
+ user_createuser_clause user_valid_clause
{
AlterUserStmt *n = makeNode(AlterUserStmt);
n->user = $3;
n->validUntil = $6;
$$ = (Node *)n;
}
- | ALTER USER UserId WITH PASSWORD Sconst
- user_createdb_clause
- user_createuser_clause user_valid_clause
+ | ALTER USER UserId WITH PASSWORD Sconst
+ user_createdb_clause
+ user_createuser_clause user_valid_clause
{
AlterUserStmt *n = makeNode(AlterUserStmt);
n->user = $3;
n->password = $6;
n->createdb = $7;
n->createuser = $8;
- n->validUntil = $9;
+ n->validUntil = $9;
$$ = (Node *)n;
}
;
/*****************************************************************************
*
- * Drop a postresql DBMS user
+ * Drop a postgresql DBMS user
*
*
*****************************************************************************/
}
;
-user_passwd_clause: PASSWORD Sconst { $$ = $2; }
- | /*EMPTY*/ { $$ = NULL; }
+user_passwd_clause: PASSWORD Sconst { $$ = $2; }
+ | /*EMPTY*/ { $$ = NULL; }
;
sysid_clause: SYSID Iconst
- {
- if ($2 <= 0)
- elog(ERROR, "sysid must be positive");
- $$ = $2;
- }
- | /*EMPTY*/ { $$ = -1; }
- ;
+ {
+ if ($2 <= 0)
+ elog(ERROR, "sysid must be positive");
+ $$ = $2;
+ }
+ | /*EMPTY*/ { $$ = -1; }
+ ;
-user_createdb_clause: CREATEDB { $$ = +1; }
- | NOCREATEDB { $$ = -1; }
- | /*EMPTY*/ { $$ = 0; }
+user_createdb_clause: CREATEDB { $$ = +1; }
+ | NOCREATEDB { $$ = -1; }
+ | /*EMPTY*/ { $$ = 0; }
;
-user_createuser_clause: CREATEUSER { $$ = +1; }
- | NOCREATEUSER { $$ = -1; }
- | /*EMPTY*/ { $$ = 0; }
+user_createuser_clause: CREATEUSER { $$ = +1; }
+ | NOCREATEUSER { $$ = -1; }
+ | /*EMPTY*/ { $$ = 0; }
;
user_list: user_list ',' UserId
}
;
-user_group_clause: IN GROUP user_list { $$ = $3; }
- | /*EMPTY*/ { $$ = NULL; }
+user_group_clause: IN GROUP user_list { $$ = $3; }
+ | /*EMPTY*/ { $$ = NULL; }
;
user_valid_clause: VALID UNTIL SCONST { $$ = $3; }
/*****************************************************************************
*
- * Create a postresql group
+ * Create a postgresql group
*
*
*****************************************************************************/
CreateGroupStmt: CREATE GROUP UserId
- {
- CreateGroupStmt *n = makeNode(CreateGroupStmt);
- n->name = $3;
- n->sysid = -1;
- n->initUsers = NULL;
- $$ = (Node *)n;
- }
- |
- CREATE GROUP UserId WITH sysid_clause users_in_new_group_clause
- {
- CreateGroupStmt *n = makeNode(CreateGroupStmt);
- n->name = $3;
- n->sysid = $5;
- n->initUsers = $6;
- $$ = (Node *)n;
- }
- ;
-
-users_in_new_group_clause: USER user_list { $$ = $2; }
- | /* EMPTY */ { $$ = NULL; }
- ;
+ {
+ CreateGroupStmt *n = makeNode(CreateGroupStmt);
+ n->name = $3;
+ n->sysid = -1;
+ n->initUsers = NULL;
+ $$ = (Node *)n;
+ }
+ | CREATE GROUP UserId WITH sysid_clause users_in_new_group_clause
+ {
+ CreateGroupStmt *n = makeNode(CreateGroupStmt);
+ n->name = $3;
+ n->sysid = $5;
+ n->initUsers = $6;
+ $$ = (Node *)n;
+ }
+ ;
+
+users_in_new_group_clause: USER user_list { $$ = $2; }
+ | /* EMPTY */ { $$ = NULL; }
+ ;
/*****************************************************************************
*
- * Alter a postresql group
+ * Alter a postgresql group
*
*
*****************************************************************************/
-AlterGroupStmt: ALTER GROUP UserId ADD USER user_list
- {
- AlterGroupStmt *n = makeNode(AlterGroupStmt);
- n->name = $3;
- n->sysid = -1;
- n->action = +1;
- n->listUsers = $6;
- $$ = (Node *)n;
- }
- |
- ALTER GROUP UserId DROP USER user_list
- {
- AlterGroupStmt *n = makeNode(AlterGroupStmt);
- n->name = $3;
- n->sysid = -1;
- n->action = -1;
- n->listUsers = $6;
- $$ = (Node *)n;
- }
- ;
+AlterGroupStmt: ALTER GROUP UserId ADD USER user_list
+ {
+ AlterGroupStmt *n = makeNode(AlterGroupStmt);
+ n->name = $3;
+ n->sysid = -1;
+ n->action = +1;
+ n->listUsers = $6;
+ $$ = (Node *)n;
+ }
+ | ALTER GROUP UserId DROP USER user_list
+ {
+ AlterGroupStmt *n = makeNode(AlterGroupStmt);
+ n->name = $3;
+ n->sysid = -1;
+ n->action = -1;
+ n->listUsers = $6;
+ $$ = (Node *)n;
+ }
+ ;
/*****************************************************************************
*
- * Drop a postresql group
+ * Drop a postgresql group
*
*
*****************************************************************************/
DropGroupStmt: DROP GROUP UserId
- {
- DropGroupStmt *n = makeNode(DropGroupStmt);
- n->name = $3;
- $$ = (Node *)n;
- }
- ;
+ {
+ DropGroupStmt *n = makeNode(DropGroupStmt);
+ n->name = $3;
+ $$ = (Node *)n;
+ }
+ ;
/*****************************************************************************
AlterTableStmt:
/* ALTER TABLE <name> ADD [COLUMN] <coldef> */
- ALTER TABLE relation_name opt_inh_star ADD opt_column columnDef
- {
- AlterTableStmt *n = makeNode(AlterTableStmt);
- n->subtype = 'A';
- n->relname = $3;
- n->inh = $4;
- n->def = $7;
- $$ = (Node *)n;
- }
+ ALTER TABLE relation_name opt_inh_star ADD opt_column columnDef
+ {
+ AlterTableStmt *n = makeNode(AlterTableStmt);
+ n->subtype = 'A';
+ n->relname = $3;
+ n->inh = $4;
+ n->def = $7;
+ $$ = (Node *)n;
+ }
/* ALTER TABLE <name> ALTER [COLUMN] <colname> {SET DEFAULT <expr>|DROP DEFAULT} */
- | ALTER TABLE relation_name opt_inh_star ALTER opt_column ColId alter_column_action
- {
- AlterTableStmt *n = makeNode(AlterTableStmt);
- n->subtype = 'T';
- n->relname = $3;
- n->inh = $4;
- n->name = $7;
- n->def = $8;
- $$ = (Node *)n;
- }
+ | ALTER TABLE relation_name opt_inh_star ALTER opt_column ColId alter_column_action
+ {
+ AlterTableStmt *n = makeNode(AlterTableStmt);
+ n->subtype = 'T';
+ n->relname = $3;
+ n->inh = $4;
+ n->name = $7;
+ n->def = $8;
+ $$ = (Node *)n;
+ }
/* ALTER TABLE <name> DROP [COLUMN] <name> {RESTRICT|CASCADE} */
- | ALTER TABLE relation_name opt_inh_star DROP opt_column ColId drop_behavior
- {
- AlterTableStmt *n = makeNode(AlterTableStmt);
- n->subtype = 'D';
- n->relname = $3;
- n->inh = $4;
- n->name = $7;
- n->behavior = $8;
- $$ = (Node *)n;
- }
+ | ALTER TABLE relation_name opt_inh_star DROP opt_column ColId drop_behavior
+ {
+ AlterTableStmt *n = makeNode(AlterTableStmt);
+ n->subtype = 'D';
+ n->relname = $3;
+ n->inh = $4;
+ n->name = $7;
+ n->behavior = $8;
+ $$ = (Node *)n;
+ }
/* ALTER TABLE <name> ADD CONSTRAINT ... */
- | ALTER TABLE relation_name opt_inh_star ADD TableConstraint
- {
- AlterTableStmt *n = makeNode(AlterTableStmt);
- n->subtype = 'C';
- n->relname = $3;
- n->inh = $4;
- n->def = $6;
- $$ = (Node *)n;
- }
+ | ALTER TABLE relation_name opt_inh_star ADD TableConstraint
+ {
+ AlterTableStmt *n = makeNode(AlterTableStmt);
+ n->subtype = 'C';
+ n->relname = $3;
+ n->inh = $4;
+ n->def = $6;
+ $$ = (Node *)n;
+ }
/* ALTER TABLE <name> DROP CONSTRAINT <name> {RESTRICT|CASCADE} */
- | ALTER TABLE relation_name opt_inh_star DROP CONSTRAINT name drop_behavior
- {
- AlterTableStmt *n = makeNode(AlterTableStmt);
- n->subtype = 'X';
- n->relname = $3;
- n->inh = $4;
- n->name = $7;
- n->behavior = $8;
- $$ = (Node *)n;
- }
- ;
+ | ALTER TABLE relation_name opt_inh_star DROP CONSTRAINT name drop_behavior
+ {
+ AlterTableStmt *n = makeNode(AlterTableStmt);
+ n->subtype = 'X';
+ n->relname = $3;
+ n->inh = $4;
+ n->name = $7;
+ n->behavior = $8;
+ $$ = (Node *)n;
+ }
+ ;
alter_column_action:
- SET DEFAULT a_expr { $$ = $3; }
- | SET DEFAULT NULL_P { $$ = NULL; }
- | DROP DEFAULT { $$ = NULL; }
+ SET DEFAULT a_expr { $$ = $3; }
+ | SET DEFAULT NULL_P { $$ = NULL; }
+ | DROP DEFAULT { $$ = NULL; }
;
-drop_behavior: CASCADE { $$ = CASCADE; }
- | RESTRICT { $$ = RESTRICT; }
+drop_behavior: CASCADE { $$ = CASCADE; }
+ | RESTRICT { $$ = RESTRICT; }
;
n->direction = $5;
n->filename = $6;
n->delimiter = $7;
- n->null_print = $8;
+ n->null_print = $8;
$$ = (Node *)n;
}
;
| /*EMPTY*/ { $$ = TRUE; }
;
-copy_null: WITH NULL_P AS Sconst { $$ = $4; }
- | /*EMPTY*/ { $$ = "\\N"; }
+copy_null: WITH NULL_P AS Sconst { $$ = $4; }
+ | /*EMPTY*/ { $$ = "\\N"; }
/*****************************************************************************
*
| TableConstraint { $$ = $1; }
;
-columnDef: ColId Typename ColConstraintList
+columnDef: ColId Typename ColQualifier
{
ColumnDef *n = makeNode(ColumnDef);
n->colname = $1;
}
;
-ColConstraintList: ColConstraintList ColConstraint
+ColQualifier: ColQualList { $$ = $1; }
+ | NULL_P ColQualListWithNull { $$ = $2; }
+ | NULL_P { $$ = NULL; }
+ | /*EMPTY*/ { $$ = NULL; }
+ ;
+
+ColQualList: ColQualList ColConstraint
{
if ($2 != NULL)
$$ = lappend($1, $2);
else
$$ = $1;
}
- | /*EMPTY*/
- { $$ = NIL; }
+ | ColConstraint
+ {
+ if ($1 != NULL)
+ $$ = lcons($1, NIL);
+ else
+ $$ = NULL;
+ }
+ ;
+
+ColQualListWithNull: ColQualListWithNull ColConstraintWithNull
+ {
+ if ($2 != NULL)
+ $$ = lappend($1, $2);
+ else
+ $$ = $1;
+ }
+ | ColConstraintWithNull
+ {
+ if ($1 != NULL)
+ $$ = lcons($1, NIL);
+ else
+ $$ = NULL;
+ }
;
ColPrimaryKey: PRIMARY KEY
{ $$ = $1; }
;
-/*
- * DEFAULT NULL is already the default for Postgres.
+ColConstraintWithNull:
+ CONSTRAINT name ColConstraintElemWithNull
+ {
+ switch (nodeTag($3))
+ {
+ case T_Constraint:
+ {
+ Constraint *n = (Constraint *)$3;
+ if (n != NULL) n->name = $2;
+ }
+ break;
+ case T_FkConstraint:
+ {
+ FkConstraint *n = (FkConstraint *)$3;
+ if (n != NULL) n->constr_name = $2;
+ }
+ break;
+ default:
+ break;
+ }
+ $$ = $3;
+ }
+ | ColConstraintElemWithNull
+ { $$ = $1; }
+ ;
+
+/* DEFAULT NULL is already the default for Postgres.
* But define it here and carry it forward into the system
* to make it explicit.
* - thomas 1998-09-13
* conflict on NOT (since NOT might start a subsequent NOT NULL constraint,
* or be part of a_expr NOT LIKE or similar constructs).
*/
-ColConstraintElem: CHECK '(' a_expr ')'
+ColConstraintElem: ColConstraintElemWithNull
+ {
+ $$ = $1;
+ }
+ | NOT NULL_P
{
Constraint *n = makeNode(Constraint);
- n->contype = CONSTR_CHECK;
+ n->contype = CONSTR_NOTNULL;
n->name = NULL;
- n->raw_expr = $3;
+ n->raw_expr = NULL;
n->cooked_expr = NULL;
n->keys = NULL;
$$ = (Node *)n;
}
- | DEFAULT NULL_P
+ | UNIQUE
{
Constraint *n = makeNode(Constraint);
- n->contype = CONSTR_DEFAULT;
+ n->contype = CONSTR_UNIQUE;
n->name = NULL;
n->raw_expr = NULL;
n->cooked_expr = NULL;
n->keys = NULL;
$$ = (Node *)n;
}
- | DEFAULT b_expr
+ | PRIMARY KEY
{
Constraint *n = makeNode(Constraint);
- n->contype = CONSTR_DEFAULT;
+ n->contype = CONSTR_PRIMARY;
n->name = NULL;
- n->raw_expr = $2;
+ n->raw_expr = NULL;
n->cooked_expr = NULL;
n->keys = NULL;
$$ = (Node *)n;
}
- | NOT NULL_P
+ ;
+
+ColConstraintElemWithNull: CHECK '(' a_expr ')'
{
Constraint *n = makeNode(Constraint);
- n->contype = CONSTR_NOTNULL;
+ n->contype = CONSTR_CHECK;
n->name = NULL;
- n->raw_expr = NULL;
+ n->raw_expr = $3;
n->cooked_expr = NULL;
n->keys = NULL;
$$ = (Node *)n;
}
- | UNIQUE
+ | DEFAULT NULL_P
{
Constraint *n = makeNode(Constraint);
- n->contype = CONSTR_UNIQUE;
+ n->contype = CONSTR_DEFAULT;
n->name = NULL;
n->raw_expr = NULL;
n->cooked_expr = NULL;
n->keys = NULL;
$$ = (Node *)n;
}
- | PRIMARY KEY
+ | DEFAULT b_expr
{
Constraint *n = makeNode(Constraint);
- n->contype = CONSTR_PRIMARY;
+ n->contype = CONSTR_DEFAULT;
n->name = NULL;
- n->raw_expr = NULL;
+ n->raw_expr = $2;
n->cooked_expr = NULL;
n->keys = NULL;
$$ = (Node *)n;
}
;
-ConstraintAttributeSpec: /* Empty */
- { $$ = 0; }
- | ConstraintDeferrabilitySpec
+ConstraintAttributeSpec: ConstraintDeferrabilitySpec
{ $$ = $1; }
| ConstraintDeferrabilitySpec ConstraintTimeSpec
{
elog(ERROR, "INITIALLY DEFERRED constraint must be DEFERRABLE");
$$ = $1 | $2;
}
+ | /* Empty */
+ { $$ = 0; }
;
ConstraintDeferrabilitySpec: NOT DEFERRABLE
*
*****************************************************************************/
-TruncateStmt: TRUNCATE TABLE relation_name
+TruncateStmt: TRUNCATE opt_table relation_name
{
TruncateStmt *n = makeNode(TruncateStmt);
n->relName = $3;
n->viewname = $3;
n->query = (Query *)$5;
if (((SelectStmt *)n->query)->sortClause != NULL)
- elog(ERROR,"Order by and Distinct on views is not implemented.");
+ elog(ERROR,"ORDER BY and DISTINCT on views are not implemented");
if (((SelectStmt *)n->query)->unionClause != NULL)
- elog(ERROR,"Views on unions not implemented.");
+ elog(ERROR,"UNION on views is not implemented");
if (((SelectStmt *)n->query)->forUpdate != NULL)
elog(ERROR, "SELECT FOR UPDATE is not allowed in CREATE VIEW");
$$ = (Node *)n;
n->dbname = $3;
n->dbpath = $5;
#ifdef MULTIBYTE
- n->encoding = $6;
+ if ($6 != NULL) {
+ n->encoding = pg_char_to_encoding($6);
+ if (n->encoding < 0) {
+ elog(ERROR, "Encoding name '%s' is invalid", $6);
+ }
+ } else {
+ n->encoding = GetTemplateEncoding();
+ }
#else
n->encoding = 0;
#endif
n->vacrel = $4;
n->va_spec = $5;
if ( $5 != NIL && !$4 )
- elog(ERROR,"parser: syntax error at or near \"(\"");
+ elog(ERROR,"VACUUM syntax error at or near \"(\""
+ "\n\tRelation name must be specified");
$$ = (Node *)n;
}
;
{
SelectStmt *n = (SelectStmt *) $1;
if (n->sortClause)
- elog(ERROR, "INSERT ... SELECT can't have ORDER BY");
+ elog(ERROR, "ORDER BY is not allowed in INSERT/SELECT");
$$ = makeNode(InsertStmt);
$$->cols = NIL;
$$->distinctClause = n->distinctClause;
{
SelectStmt *n = (SelectStmt *) $4;
if (n->sortClause)
- elog(ERROR, "INSERT ... SELECT can't have ORDER BY");
+ elog(ERROR, "ORDER BY is not allowed in INSERT/SELECT");
$$ = makeNode(InsertStmt);
$$->cols = $2;
$$->distinctClause = n->distinctClause;
| /*EMPTY*/ { $$ = NIL; }
;
-columnList:
- columnList ',' columnElem
+columnList: columnList ',' columnElem
{ $$ = lappend($1, $3); }
| columnElem
{ $$ = lcons($1, NIL); }
n->portalname = $2;
n->binary = $3;
if (n->forUpdate != NULL)
- elog(ERROR,"DECLARE/UPDATE not supported;"
- " Cursors must be READ ONLY.");
+ elog(ERROR,"DECLARE/UPDATE is not supported"
+ "\n\tCursors must be READ ONLY");
$$ = (Node *)n;
}
;
$$ = (Node *) first_select;
}
if (((SelectStmt *)$$)->forUpdate != NULL && QueryIsRule)
- elog(ERROR, "SELECT FOR UPDATE is not allowed in RULES");
+ elog(ERROR, "SELECT/FOR UPDATE is not allowed in CREATE RULE");
}
;
Const *n = makeNode(Const);
if ($1 < 1)
- elog(ERROR, "selection limit must be ALL or a positive integer value > 0");
+ elog(ERROR, "Selection limit must be ALL or a positive integer value");
n->consttype = INT4OID;
n->constlen = sizeof(int4);
/*****************************************************************************
*
* clauses common to all Optimizable Stmts:
- * from_clause -
- * where_clause -
+ * from_clause - allow list of both JOIN expressions and table names
+ * where_clause - qualifications for joins or restrictions
*
*****************************************************************************/
-from_clause: FROM from_expr { $$ = $2; }
+from_clause: FROM from_list { $$ = $2; }
+/***
+#ifdef ENABLE_ORACLE_JOIN_SYNTAX
+ | FROM oracle_list { $$ = $2; }
+#endif
+***/
+ | FROM from_expr { $$ = lcons($2, NIL); }
| /*EMPTY*/ { $$ = NIL; }
;
-from_expr: '(' join_clause_with_union ')'
- { $$ = $2; }
- | join_clause
- { $$ = $1; }
- | table_list
- { $$ = $1; }
+from_list: from_list ',' table_expr { $$ = lappend($1, $3); }
+ | table_expr { $$ = lcons($1, NIL); }
;
-table_list: table_list ',' table_expr
- { $$ = lappend($1, $3); }
- | table_expr
- { $$ = lcons($1, NIL); }
+/***********
+ * This results in one shift/reduce conflict, presumably due to the trailing "(+)"
+ * - Thomas 1999-09-20
+ *
+#ifdef ENABLE_ORACLE_JOIN_SYNTAX
+oracle_list: oracle_expr { $$ = lcons($1, NIL); }
;
-table_expr: relation_expr AS ColLabel
+oracle_expr: ColId ',' ColId oracle_outer
{
- $$ = makeNode(RangeVar);
- $$->relExpr = $1;
- $$->name = $3;
+ elog(ERROR,"Oracle OUTER JOIN not yet supported");
+ $$ = NULL;
}
- | relation_expr ColId
+ | oracle_outer ColId ',' ColId
{
- $$ = makeNode(RangeVar);
- $$->relExpr = $1;
- $$->name = $2;
- }
- | relation_expr
- {
- $$ = makeNode(RangeVar);
- $$->relExpr = $1;
- $$->name = NULL;
+ elog(ERROR,"Oracle OUTER JOIN not yet supported");
+ $$ = NULL;
}
;
-/* A UNION JOIN is the same as a FULL OUTER JOIN which *omits*
- * all result rows which would have matched on an INNER JOIN.
- * Let's reject this for now. - thomas 1999-01-08
- */
-join_clause_with_union: join_clause
+oracle_outer: '(' '+' ')' { $$ = TRUE; }
+ ;
+#endif
+***********/
+
+from_expr: '(' join_clause_with_union ')' alias_clause
+ {
+ JoinExpr *j = $2;
+ j->alias = $4;
+ $$ = j;
+ }
+ | join_clause
{ $$ = $1; }
- | table_expr UNION JOIN table_expr
- { elog(ERROR,"UNION JOIN not yet implemented"); }
;
-join_clause: table_expr join_list
+table_expr: relation_expr alias_clause
{
- Node *n = lfirst($2);
+ $$ = makeNode(RangeVar);
+ $$->relExpr = $1;
+ $$->name = $2;
- /* JoinExpr came back? then it is a join of some sort...
- */
- if (IsA(n, JoinExpr))
- {
- JoinExpr *j = (JoinExpr *)n;
- j->larg = $1;
- $$ = $2;
- }
- /* otherwise, it was a cross join,
- * which we just represent as an inner join...
- */
- else
- $$ = lcons($1, $2);
+#ifdef DISABLE_JOIN_SYNTAX
+ if (($2 != NULL) && ($2->attrs != NULL))
+ elog(ERROR, "Column aliases in table expressions not yet supported");
+#endif
}
;
-join_list: join_list join_expr
+alias_clause: AS ColId '(' name_list ')'
{
- $$ = lappend($1, $2);
+ $$ = makeNode(Attr);
+ $$->relname = $2;
+ $$->attrs = $4;
}
- | join_expr
+ | AS ColId
{
- $$ = lcons($1, NIL);
+ $$ = makeNode(Attr);
+ $$->relname = $2;
+ }
+ | ColId '(' name_list ')'
+ {
+ $$ = makeNode(Attr);
+ $$->relname = $1;
+ $$->attrs = $3;
+ }
+ | ColId
+ {
+ $$ = makeNode(Attr);
+ $$->relname = $1;
+ }
+ | /*EMPTY*/
+ {
+ $$ = NULL; /* no qualifiers */
+ }
+ ;
+
+/* A UNION JOIN is the same as a FULL OUTER JOIN which *omits*
+ * all result rows which would have matched on an INNER JOIN.
+ * Syntactically, must enclose the UNION JOIN in parens to avoid
+ * conflicts with SELECT/UNION.
+ */
+join_clause: join_clause join_expr
+ {
+ $2->larg = (Node *)$1;
+ $$ = $2;
+ }
+ | table_expr join_expr
+ {
+ $2->larg = (Node *)$1;
+ $$ = $2;
}
;
/* This is everything but the left side of a join.
* Note that a CROSS JOIN is the same as an unqualified
- * inner join, so just pass back the right-side table.
+ * INNER JOIN, and an INNER JOIN/ON has the same shape
+ * but a qualification expression to limit membership.
* A NATURAL JOIN implicitly matches column names between
- * tables, so we'll collect those during the later transformation.
+ * tables and the shape is determined by which columns are
+ * in common. We'll collect columns during the later transformations.
*/
join_expr: join_type JOIN table_expr join_qual
{
JoinExpr *n = makeNode(JoinExpr);
n->jointype = $1;
n->rarg = (Node *)$3;
- n->quals = $4;
- $$ = (Node *)n;
+ n->quals = (List *)$4;
+ $$ = n;
}
| NATURAL join_type JOIN table_expr
{
JoinExpr *n = makeNode(JoinExpr);
n->jointype = $2;
+ n->isNatural = TRUE;
n->rarg = (Node *)$4;
n->quals = NULL; /* figure out which columns later... */
- $$ = (Node *)n;
+ $$ = n;
}
| CROSS JOIN table_expr
- { $$ = (Node *)$3; }
- ;
-
-/* OUTER is just noise... */
-join_type: FULL join_outer
- {
- $$ = FULL;
- elog(NOTICE,"FULL OUTER JOIN not yet implemented");
- }
- | LEFT join_outer
{
- $$ = LEFT;
- elog(NOTICE,"LEFT OUTER JOIN not yet implemented");
- }
- | RIGHT join_outer
- {
- $$ = RIGHT;
- elog(NOTICE,"RIGHT OUTER JOIN not yet implemented");
+ JoinExpr *n = makeNode(JoinExpr);
+ n->jointype = INNER_P;
+ n->isNatural = FALSE;
+ n->rarg = (Node *)$3;
+ n->quals = NULL;
+ $$ = n;
}
- | OUTER_P
+ ;
+
+join_clause_with_union: join_clause_with_union join_expr_with_union
{
- $$ = LEFT;
- elog(NOTICE,"OUTER JOIN not yet implemented");
+ $2->larg = (Node *)$1;
+ $$ = $2;
}
- | INNER_P
+ | table_expr join_expr_with_union
{
- $$ = INNER_P;
+ $2->larg = (Node *)$1;
+ $$ = $2;
}
- | /*EMPTY*/
+ ;
+
+join_expr_with_union: join_expr
+ { $$ = $1; }
+ | UNION JOIN table_expr
{
- $$ = INNER_P;
+ JoinExpr *n = makeNode(JoinExpr);
+ n->jointype = UNION;
+ n->rarg = (Node *)$3;
+ n->quals = NULL;
+ $$ = n;
+
+ elog(ERROR,"UNION JOIN not yet implemented");
}
;
+/* OUTER is just noise... */
+join_type: FULL join_outer { $$ = FULL; }
+ | LEFT join_outer { $$ = LEFT; }
+ | RIGHT join_outer { $$ = RIGHT; }
+ | OUTER_P { $$ = LEFT; }
+ | INNER_P { $$ = INNER_P; }
+ | /*EMPTY*/ { $$ = INNER_P; }
+ ;
+
join_outer: OUTER_P { $$ = NULL; }
| /*EMPTY*/ { $$ = NULL; /* no qualifiers */ }
;
* - thomas 1999-01-07
*/
-join_qual: USING '(' using_list ')' { $$ = $3; }
- | ON a_expr { $$ = lcons($2, NIL); }
+join_qual: USING '(' using_list ')' { $$ = (Node *)$3; }
+ | ON a_expr { $$ = (Node *)$2; }
;
using_list: using_list ',' using_expr { $$ = lappend($1, $3); }
Ident *n = makeNode(Ident);
n->name = $1;
n->indirection = NULL;
- $$ = (Node *)n;
+ $$ = n;
}
;
$$->typmod = -1;
}
| DECIMAL opt_decimal
+ {
+ $$ = makeNode(TypeName);
+ $$->name = xlateSqlType("numeric");
+ $$->typmod = $2;
+ }
+ | DEC opt_decimal
{
$$ = makeNode(TypeName);
$$->name = xlateSqlType("decimal");
{ $$ = xlateSqlType("float8"); }
| DECIMAL
{ $$ = xlateSqlType("decimal"); }
+ | DEC
+ { $$ = xlateSqlType("decimal"); }
| NUMERIC
{ $$ = xlateSqlType("numeric"); }
;
opt_numeric: '(' Iconst ',' Iconst ')'
{
if ($2 < 1 || $2 > NUMERIC_MAX_PRECISION)
- elog(ERROR,"NUMERIC precision %d must be between 1 and %d",
+ elog(ERROR,"NUMERIC precision %d must be beween 1 and %d",
$2, NUMERIC_MAX_PRECISION);
if ($4 < 0 || $4 > $2)
elog(ERROR,"NUMERIC scale %d must be between 0 and precision %d",
| '(' Iconst ')'
{
if ($2 < 1 || $2 > NUMERIC_MAX_PRECISION)
- elog(ERROR,"NUMERIC precision %d must be between 1 and %d",
+ elog(ERROR,"NUMERIC precision %d must be beween 1 and %d",
$2, NUMERIC_MAX_PRECISION);
$$ = ($2 << 16) + VARHDRSZ;
opt_decimal: '(' Iconst ',' Iconst ')'
{
if ($2 < 1 || $2 > NUMERIC_MAX_PRECISION)
- elog(ERROR,"DECIMAL precision %d must be between 1 and %d",
+ elog(ERROR,"DECIMAL precision %d must be beween 1 and %d",
$2, NUMERIC_MAX_PRECISION);
if ($4 < 0 || $4 > $2)
elog(ERROR,"DECIMAL scale %d must be between 0 and precision %d",
| '(' Iconst ')'
{
if ($2 < 1 || $2 > NUMERIC_MAX_PRECISION)
- elog(ERROR,"DECIMAL precision %d must be between 1 and %d",
+ elog(ERROR,"DECIMAL precision %d must be beween 1 and %d",
$2, NUMERIC_MAX_PRECISION);
$$ = ($2 << 16) + VARHDRSZ;
all_Op: Op | MathOp;
-MathOp: '+' { $$ = "+"; }
+MathOp: '+' { $$ = "+"; }
| '-' { $$ = "-"; }
| '*' { $$ = "*"; }
| '/' { $$ = "/"; }
* Note that '(' a_expr ')' is a b_expr, so an unrestricted expression can
* always be used by surrounding it with parens.
*
- * com_expr is all the productions that are common to a_expr and b_expr;
+ * c_expr is all the productions that are common to a_expr and b_expr;
* it's factored out just to eliminate redundant coding.
*/
-a_expr: com_expr
+a_expr: c_expr
{ $$ = $1; }
| a_expr TYPECAST Typename
{ $$ = makeTypeCast($1, $3); }
* cause trouble in the places where b_expr is used. For simplicity, we
* just eliminate all the boolean-keyword-operator productions from b_expr.
*/
-b_expr: com_expr
+b_expr: c_expr
{ $$ = $1; }
| b_expr TYPECAST Typename
{ $$ = makeTypeCast($1, $3); }
* inside parentheses, such as function arguments; that cannot introduce
* ambiguity to the b_expr syntax.
*/
-com_expr: attr
+c_expr: attr
{ $$ = (Node *) $1; }
| ColId opt_indirection
{
n->agg_distinct = false;
$$ = (Node *)n;
}
+ | SESSION_USER
+ {
+ FuncCall *n = makeNode(FuncCall);
+ n->funcname = "getpgusername";
+ n->args = NIL;
+ n->agg_star = false;
+ n->agg_distinct = false;
+ $$ = (Node *)n;
+ }
| USER
{
FuncCall *n = makeNode(FuncCall);
| CONSTRAINT { $$ = "constraint"; }
| COPY { $$ = "copy"; }
| CURRENT { $$ = "current"; }
+ | CURRENT_USER { $$ = "current_user"; }
+ | DEC { $$ = "dec"; }
| DECIMAL { $$ = "decimal"; }
| DO { $$ = "do"; }
| ELSE { $$ = "else"; }
| POSITION { $$ = "position"; }
| PRECISION { $$ = "precision"; }
| RESET { $$ = "reset"; }
+ | SESSION_USER { $$ = "session_user"; }
| SETOF { $$ = "setof"; }
| SHOW { $$ = "show"; }
| TABLE { $$ = "table"; }
| THEN { $$ = "then"; }
| TRANSACTION { $$ = "transaction"; }
| TRUE_P { $$ = "true"; }
+ | USER { $$ = "user"; }
| VACUUM { $$ = "vacuum"; }
| VERBOSE { $$ = "verbose"; }
| WHEN { $$ = "when"; }
src = lnext(src);
dst = lnext(dst);
}
+ return;
} /* mapTargetColumns() */
/*
* param_type_init()
*
- * keep enough information around fill out the type of param nodes
+ * Keep enough information around to fill out the type of param nodes
* used in postquel functions
*/
static void
projects / postgresql / commitdiff