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Implement TIMEZONE_HOUR, TIMEZONE_MINUTE per SQL92 specs.
Check for and properly ignore FOREIGN KEY column constraints (already had fixed same for table constraints). Define USER as synonym for CURRENT_USER per SQL92 specs (no longer allowed as bare column name, sorry). Re-enable HAVING clause but no fixes elsewhere yet. Make "char" type a synonum for "char(1)" (actually implemented as bpchar). Compress/compact row-style subselect and operator definitions (cut out ~140 lines of code with no change in functionality). Save string type if specified for DEFAULT clause handling. Enough for now...
This commit is contained in:
Thomas G. Lockhart
parent
d4a95fd7ab
commit
ca354d9027
@ -10,7 +10,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.11 1998/04/17 04:12:56 momjian Exp $
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* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.12 1998/05/09 23:22:15 thomas Exp $
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*
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* HISTORY
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* AUTHOR DATE MAJOR EVENT
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@ -200,6 +200,8 @@ Oid param_type(int t); /* used in parse_expr.c */
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having_clause
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%type <list> row_descriptor, row_list
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%type <node> row_expr
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%type <str> row_op
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%type <ival> sub_type
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%type <list> OptCreateAs, CreateAsList
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%type <node> CreateAsElement
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%type <value> NumConst
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@ -267,8 +269,9 @@ Oid param_type(int t); /* used in parse_expr.c */
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PARTIAL, POSITION, PRECISION, PRIMARY, PRIVILEGES, PROCEDURE, PUBLIC,
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REFERENCES, REVOKE, RIGHT, ROLLBACK,
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SECOND_P, SELECT, SET, SUBSTRING,
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TABLE, TIME, TIMESTAMP, TO, TRAILING, TRANSACTION, TRIM,
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UNION, UNIQUE, UPDATE, USING,
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TABLE, TIME, TIMESTAMP, TIMEZONE_HOUR, TIMEZONE_MINUTE,
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TO, TRAILING, TRANSACTION, TRIM,
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UNION, UNIQUE, UPDATE, USER, USING,
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VALUES, VARCHAR, VARYING, VIEW,
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WHERE, WITH, WORK, YEAR_P, ZONE
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@ -299,7 +302,7 @@ Oid param_type(int t); /* used in parse_expr.c */
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*
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* Todd A. Brandys
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*/
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%token USER, PASSWORD, CREATEDB, NOCREATEDB, CREATEUSER, NOCREATEUSER, VALID, UNTIL
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%token PASSWORD, CREATEDB, NOCREATEDB, CREATEUSER, NOCREATEUSER, VALID, UNTIL
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/* Special keywords, not in the query language - see the "lex" file */
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%token <str> IDENT, SCONST, Op
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@ -738,8 +741,20 @@ ColQualifier: ColQualList { $$ = $1; }
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| /*EMPTY*/ { $$ = NULL; }
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;
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ColQualList: ColQualList ColConstraint { $$ = lappend($1,$2); }
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| ColConstraint { $$ = lcons($1, NIL); }
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ColQualList: ColQualList ColConstraint
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{
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if ($2 != NULL)
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$$ = lappend($1, $2);
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else
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$$ = $1;
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}
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| ColConstraint
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{
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if ($1 != NULL)
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$$ = lcons($1, NIL);
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else
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$$ = NULL;
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}
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;
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ColConstraint:
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@ -896,6 +911,8 @@ default_expr: AexprConst
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}
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| CURRENT_USER
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{ $$ = lcons( makeString( "CURRENT_USER"), NIL); }
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| USER
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{ $$ = lcons( makeString( "USER"), NIL); }
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;
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/* ConstraintElem specifies constraint syntax which is not embedded into
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@ -2542,8 +2559,10 @@ groupby: ColId
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having_clause: HAVING a_expr
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{
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#if FALSE
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elog(ERROR,"HAVING clause not yet implemented");
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/* $$ = $2; use this line instead to enable HAVING */
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#endif
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$$ = $2;
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}
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| /*EMPTY*/ { $$ = NULL; }
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;
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@ -2849,12 +2868,13 @@ opt_decimal: '(' Iconst ',' Iconst ')'
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Character: character '(' Iconst ')'
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{
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$$ = makeNode(TypeName);
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if (!strcasecmp($1, "char"))
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if (strcasecmp($1, "char") == 0)
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$$->name = xlateSqlType("bpchar");
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else if (!strcasecmp($1, "varchar"))
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else if (strcasecmp($1, "varchar") == 0)
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$$->name = xlateSqlType("varchar");
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else
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yyerror("parse error");
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yyerror("internal parsing error; unrecognized character type");
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if ($3 < 1)
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elog(ERROR,"length for '%s' type must be at least 1",$1);
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else if ($3 > 4096)
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@ -2875,8 +2895,19 @@ Character: character '(' Iconst ')'
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| character
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{
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$$ = makeNode(TypeName);
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$$->name = xlateSqlType($1);
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$$->typmod = -1;
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/* Let's try to make all single-character types into bpchar(1)
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* - thomas 1998-05-07
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*/
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if (strcasecmp($1, "char") == 0)
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{
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$$->name = xlateSqlType("bpchar");
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$$->typmod = VARHDRSZ + 1;
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}
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else
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{
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$$->name = xlateSqlType($1);
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$$->typmod = -1;
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}
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}
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;
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@ -2897,7 +2928,7 @@ character: CHARACTER opt_varying opt_charset opt_collate
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}
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};
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if ($4 != NULL)
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elog(ERROR,"COLLATE %s not yet implemented",$4);
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elog(NOTICE,"COLLATE %s not yet implemented; clause ignored",$4);
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$$ = type;
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}
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| CHAR opt_varying { $$ = xlateSqlType($2? "varchar": "char"); }
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@ -2964,6 +2995,7 @@ opt_interval: datetime { $$ = lcons($1, NIL); }
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| DAY_P TO SECOND_P { $$ = NIL; }
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| HOUR_P TO MINUTE_P { $$ = NIL; }
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| HOUR_P TO SECOND_P { $$ = NIL; }
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| MINUTE_P TO SECOND_P { $$ = NIL; }
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| /*EMPTY*/ { $$ = NIL; }
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;
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@ -2987,6 +3019,11 @@ a_expr_or_null: a_expr
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/* Expressions using row descriptors
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* Define row_descriptor to allow yacc to break the reduce/reduce conflict
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* with singleton expressions.
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* Eliminated lots of code by defining row_op and sub_type clauses.
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* However, can not consolidate EXPR_LINK case with others subselects
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* due to shift/reduce conflict with the non-subselect clause (the parser
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* would have to look ahead more than one token to resolve the conflict).
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* - thomas 1998-05-09
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*/
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row_expr: '(' row_descriptor ')' IN '(' SubSelect ')'
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{
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@ -3008,7 +3045,20 @@ row_expr: '(' row_descriptor ')' IN '(' SubSelect ')'
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n->subselect = $7;
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$$ = (Node *)n;
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}
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| '(' row_descriptor ')' Op '(' SubSelect ')'
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| '(' row_descriptor ')' row_op sub_type '(' SubSelect ')'
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{
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SubLink *n = makeNode(SubLink);
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n->lefthand = $2;
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n->oper = lcons($4, NIL);
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if (strcmp($4,"<>") == 0)
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n->useor = true;
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else
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n->useor = false;
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n->subLinkType = $5;
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n->subselect = $7;
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$$ = (Node *)n;
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}
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| '(' row_descriptor ')' row_op '(' SubSelect ')'
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{
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SubLink *n = makeNode(SubLink);
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n->lefthand = $2;
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@ -3021,274 +3071,10 @@ row_expr: '(' row_descriptor ')' IN '(' SubSelect ')'
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n->subselect = $6;
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$$ = (Node *)n;
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}
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| '(' row_descriptor ')' '+' '(' SubSelect ')'
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{
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SubLink *n = makeNode(SubLink);
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n->lefthand = $2;
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n->oper = lcons("+", NIL);
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n->useor = false;
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n->subLinkType = EXPR_SUBLINK;
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n->subselect = $6;
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$$ = (Node *)n;
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}
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| '(' row_descriptor ')' '-' '(' SubSelect ')'
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{
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SubLink *n = makeNode(SubLink);
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n->lefthand = $2;
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n->oper = lcons("-", NIL);
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n->useor = false;
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n->subLinkType = EXPR_SUBLINK;
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n->subselect = $6;
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$$ = (Node *)n;
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}
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| '(' row_descriptor ')' '/' '(' SubSelect ')'
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{
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SubLink *n = makeNode(SubLink);
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n->lefthand = $2;
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n->oper = lcons("/", NIL);
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n->useor = false;
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n->subLinkType = EXPR_SUBLINK;
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n->subselect = $6;
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$$ = (Node *)n;
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}
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| '(' row_descriptor ')' '*' '(' SubSelect ')'
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{
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SubLink *n = makeNode(SubLink);
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n->lefthand = $2;
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n->oper = lcons("*", NIL);
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n->useor = false;
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n->subLinkType = EXPR_SUBLINK;
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n->subselect = $6;
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$$ = (Node *)n;
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}
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| '(' row_descriptor ')' '<' '(' SubSelect ')'
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{
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SubLink *n = makeNode(SubLink);
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n->lefthand = $2;
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n->oper = lcons("<", NIL);
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n->useor = false;
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n->subLinkType = EXPR_SUBLINK;
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n->subselect = $6;
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$$ = (Node *)n;
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}
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| '(' row_descriptor ')' '>' '(' SubSelect ')'
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{
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SubLink *n = makeNode(SubLink);
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n->lefthand = $2;
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n->oper = lcons(">", NIL);
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n->useor = false;
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n->subLinkType = EXPR_SUBLINK;
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n->subselect = $6;
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$$ = (Node *)n;
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}
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| '(' row_descriptor ')' '=' '(' SubSelect ')'
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{
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SubLink *n = makeNode(SubLink);
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n->lefthand = $2;
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n->oper = lcons("=", NIL);
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n->useor = false;
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n->subLinkType = EXPR_SUBLINK;
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n->subselect = $6;
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$$ = (Node *)n;
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}
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| '(' row_descriptor ')' Op ANY '(' SubSelect ')'
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{
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SubLink *n = makeNode(SubLink);
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n->lefthand = $2;
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n->oper = lcons($4,NIL);
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if (strcmp($4,"<>") == 0)
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n->useor = true;
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else
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n->useor = false;
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n->subLinkType = ANY_SUBLINK;
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n->subselect = $7;
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$$ = (Node *)n;
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}
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| '(' row_descriptor ')' '+' ANY '(' SubSelect ')'
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{
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SubLink *n = makeNode(SubLink);
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n->lefthand = $2;
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n->oper = lcons("+",NIL);
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n->useor = false;
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n->subLinkType = ANY_SUBLINK;
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n->subselect = $7;
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$$ = (Node *)n;
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}
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| '(' row_descriptor ')' '-' ANY '(' SubSelect ')'
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{
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SubLink *n = makeNode(SubLink);
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n->lefthand = $2;
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n->oper = lcons("-",NIL);
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n->useor = false;
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n->subLinkType = ANY_SUBLINK;
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n->subselect = $7;
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$$ = (Node *)n;
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}
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| '(' row_descriptor ')' '/' ANY '(' SubSelect ')'
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{
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SubLink *n = makeNode(SubLink);
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n->lefthand = $2;
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n->oper = lcons("/",NIL);
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n->useor = false;
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n->subLinkType = ANY_SUBLINK;
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n->subselect = $7;
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$$ = (Node *)n;
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}
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| '(' row_descriptor ')' '*' ANY '(' SubSelect ')'
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{
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SubLink *n = makeNode(SubLink);
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n->lefthand = $2;
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n->oper = lcons("*",NIL);
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n->useor = false;
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n->subLinkType = ANY_SUBLINK;
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n->subselect = $7;
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$$ = (Node *)n;
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}
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| '(' row_descriptor ')' '<' ANY '(' SubSelect ')'
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{
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SubLink *n = makeNode(SubLink);
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n->lefthand = $2;
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n->oper = lcons("<",NIL);
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n->useor = false;
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n->subLinkType = ANY_SUBLINK;
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n->subselect = $7;
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$$ = (Node *)n;
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}
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| '(' row_descriptor ')' '>' ANY '(' SubSelect ')'
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{
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SubLink *n = makeNode(SubLink);
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n->lefthand = $2;
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n->oper = lcons(">",NIL);
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n->useor = false;
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n->subLinkType = ANY_SUBLINK;
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n->subselect = $7;
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$$ = (Node *)n;
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}
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| '(' row_descriptor ')' '=' ANY '(' SubSelect ')'
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{
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SubLink *n = makeNode(SubLink);
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n->lefthand = $2;
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n->oper = lcons("=",NIL);
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n->useor = false;
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n->subLinkType = ANY_SUBLINK;
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n->subselect = $7;
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$$ = (Node *)n;
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}
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| '(' row_descriptor ')' Op ALL '(' SubSelect ')'
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{
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SubLink *n = makeNode(SubLink);
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n->lefthand = $2;
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n->oper = lcons($4,NIL);
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if (strcmp($4,"<>") == 0)
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n->useor = true;
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else
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n->useor = false;
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n->subLinkType = ALL_SUBLINK;
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n->subselect = $7;
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$$ = (Node *)n;
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}
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| '(' row_descriptor ')' '+' ALL '(' SubSelect ')'
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{
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SubLink *n = makeNode(SubLink);
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n->lefthand = $2;
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n->oper = lcons("+",NIL);
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n->useor = false;
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n->subLinkType = ALL_SUBLINK;
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n->subselect = $7;
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$$ = (Node *)n;
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}
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| '(' row_descriptor ')' '-' ALL '(' SubSelect ')'
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{
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SubLink *n = makeNode(SubLink);
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n->lefthand = $2;
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n->oper = lcons("-",NIL);
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n->useor = false;
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n->subLinkType = ALL_SUBLINK;
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n->subselect = $7;
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$$ = (Node *)n;
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}
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| '(' row_descriptor ')' '/' ALL '(' SubSelect ')'
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{
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SubLink *n = makeNode(SubLink);
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n->lefthand = $2;
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n->oper = lcons("/",NIL);
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n->useor = false;
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n->subLinkType = ALL_SUBLINK;
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n->subselect = $7;
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$$ = (Node *)n;
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}
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| '(' row_descriptor ')' '*' ALL '(' SubSelect ')'
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{
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SubLink *n = makeNode(SubLink);
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n->lefthand = $2;
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n->oper = lcons("*",NIL);
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n->useor = false;
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n->subLinkType = ALL_SUBLINK;
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n->subselect = $7;
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$$ = (Node *)n;
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}
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| '(' row_descriptor ')' '<' ALL '(' SubSelect ')'
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{
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SubLink *n = makeNode(SubLink);
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n->lefthand = $2;
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n->oper = lcons("<",NIL);
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n->useor = false;
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n->subLinkType = ALL_SUBLINK;
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n->subselect = $7;
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$$ = (Node *)n;
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}
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| '(' row_descriptor ')' '>' ALL '(' SubSelect ')'
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{
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SubLink *n = makeNode(SubLink);
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n->lefthand = $2;
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n->oper = lcons(">",NIL);
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n->useor = false;
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n->subLinkType = ALL_SUBLINK;
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n->subselect = $7;
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$$ = (Node *)n;
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}
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| '(' row_descriptor ')' '=' ALL '(' SubSelect ')'
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{
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SubLink *n = makeNode(SubLink);
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n->lefthand = $2;
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n->oper = lcons("=",NIL);
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n->useor = false;
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n->subLinkType = ALL_SUBLINK;
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n->subselect = $7;
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$$ = (Node *)n;
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}
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| '(' row_descriptor ')' Op '(' row_descriptor ')'
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| '(' row_descriptor ')' row_op '(' row_descriptor ')'
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{
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$$ = makeRowExpr($4, $2, $6);
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}
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| '(' row_descriptor ')' '+' '(' row_descriptor ')'
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{
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$$ = makeRowExpr("+", $2, $6);
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}
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| '(' row_descriptor ')' '-' '(' row_descriptor ')'
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{
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$$ = makeRowExpr("-", $2, $6);
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}
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| '(' row_descriptor ')' '/' '(' row_descriptor ')'
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{
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$$ = makeRowExpr("/", $2, $6);
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}
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| '(' row_descriptor ')' '*' '(' row_descriptor ')'
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{
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$$ = makeRowExpr("*", $2, $6);
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}
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| '(' row_descriptor ')' '<' '(' row_descriptor ')'
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{
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$$ = makeRowExpr("<", $2, $6);
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}
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| '(' row_descriptor ')' '>' '(' row_descriptor ')'
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{
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$$ = makeRowExpr(">", $2, $6);
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}
|
||||
| '(' row_descriptor ')' '=' '(' row_descriptor ')'
|
||||
{
|
||||
$$ = makeRowExpr("=", $2, $6);
|
||||
}
|
||||
;
|
||||
|
||||
row_descriptor: row_list ',' a_expr
|
||||
@ -3307,6 +3093,20 @@ row_list: row_list ',' a_expr
|
||||
}
|
||||
;
|
||||
|
||||
row_op: Op { $$ = $1; }
|
||||
| '<' { $$ = "<"; }
|
||||
| '=' { $$ = "="; }
|
||||
| '>' { $$ = ">"; }
|
||||
| '+' { $$ = "+"; }
|
||||
| '-' { $$ = "-"; }
|
||||
| '*' { $$ = "*"; }
|
||||
| '/' { $$ = "/"; }
|
||||
;
|
||||
|
||||
sub_type: ANY { $$ = ANY_SUBLINK; }
|
||||
| ALL { $$ = ALL_SUBLINK; }
|
||||
;
|
||||
|
||||
/*
|
||||
* This is the heart of the expression syntax.
|
||||
* Note that the BETWEEN clause looks similar to a boolean expression
|
||||
@ -3520,6 +3320,13 @@ a_expr: attr opt_indirection
|
||||
n->args = NIL;
|
||||
$$ = (Node *)n;
|
||||
}
|
||||
| USER
|
||||
{
|
||||
FuncCall *n = makeNode(FuncCall);
|
||||
n->funcname = "getpgusername";
|
||||
n->args = NIL;
|
||||
$$ = (Node *)n;
|
||||
}
|
||||
| EXISTS '(' SubSelect ')'
|
||||
{
|
||||
SubLink *n = makeNode(SubLink);
|
||||
@ -4108,6 +3915,13 @@ b_expr: attr opt_indirection
|
||||
n->args = NIL;
|
||||
$$ = (Node *)n;
|
||||
}
|
||||
| USER
|
||||
{
|
||||
FuncCall *n = makeNode(FuncCall);
|
||||
n->funcname = "getpgusername";
|
||||
n->args = NIL;
|
||||
$$ = (Node *)n;
|
||||
}
|
||||
| POSITION '(' position_list ')'
|
||||
{
|
||||
FuncCall *n = makeNode(FuncCall);
|
||||
@ -4190,12 +4004,9 @@ extract_list: extract_arg FROM a_expr
|
||||
{ $$ = NIL; }
|
||||
;
|
||||
|
||||
/* Add in TIMEZONE_HOUR and TIMEZONE_MINUTE for SQL92 compliance
|
||||
* for next release. Just set up extract_arg for now...
|
||||
* - thomas 1998-04-08
|
||||
*/
|
||||
extract_arg: datetime
|
||||
{ $$ = $1; }
|
||||
extract_arg: datetime { $$ = $1; }
|
||||
| TIMEZONE_HOUR { $$ = "tz_hour"; }
|
||||
| TIMEZONE_MINUTE { $$ = "tz_minute"; }
|
||||
;
|
||||
|
||||
position_list: position_expr IN position_expr
|
||||
@ -4686,9 +4497,10 @@ ColId: IDENT { $$ = $1; }
|
||||
| START { $$ = "start"; }
|
||||
| STATEMENT { $$ = "statement"; }
|
||||
| TIME { $$ = "time"; }
|
||||
| TIMEZONE_HOUR { $$ = "timezone_hour"; }
|
||||
| TIMEZONE_MINUTE { $$ = "timezone_minute"; }
|
||||
| TRIGGER { $$ = "trigger"; }
|
||||
| TYPE_P { $$ = "type"; }
|
||||
| USER { $$ = "user"; }
|
||||
| VALID { $$ = "valid"; }
|
||||
| VERSION { $$ = "version"; }
|
||||
| ZONE { $$ = "zone"; }
|
||||
@ -5030,10 +4842,10 @@ FlattenStringList(List *list)
|
||||
*(s+len) = '\0';
|
||||
|
||||
#ifdef PARSEDEBUG
|
||||
printf( "flattened string is \"%s\"\n", s);
|
||||
elog(DEBUG, "flattened string is \"%s\"\n", s);
|
||||
#endif
|
||||
|
||||
return(s);
|
||||
return (s);
|
||||
} /* FlattenStringList() */
|
||||
|
||||
|
||||
@ -5043,33 +4855,48 @@ printf( "flattened string is \"%s\"\n", s);
|
||||
static List *
|
||||
makeConstantList( A_Const *n)
|
||||
{
|
||||
List *result = NIL;
|
||||
char *typval = NULL;
|
||||
char *defval = NULL;
|
||||
|
||||
if (nodeTag(n) != T_A_Const) {
|
||||
elog(ERROR,"Cannot handle non-constant parameter");
|
||||
|
||||
} else if (n->val.type == T_Float) {
|
||||
defval = (char*) palloc(20+1);
|
||||
sprintf( defval, "%g", n->val.val.dval);
|
||||
result = lcons( makeString(defval), NIL);
|
||||
|
||||
} else if (n->val.type == T_Integer) {
|
||||
defval = (char*) palloc(20+1);
|
||||
sprintf( defval, "%ld", n->val.val.ival);
|
||||
result = lcons( makeString(defval), NIL);
|
||||
|
||||
} else if (n->val.type == T_String) {
|
||||
defval = (char*) palloc(strlen( ((A_Const *) n)->val.val.str) + 3);
|
||||
strcpy( defval, "'");
|
||||
strcat( defval, ((A_Const *) n)->val.val.str);
|
||||
strcat( defval, "'");
|
||||
if (n->typename != NULL)
|
||||
{
|
||||
typval = (char*) palloc(strlen( n->typename->name) + 1);
|
||||
strcpy(typval, n->typename->name);
|
||||
result = lappend( lcons( makeString(typval), NIL), makeString(defval));
|
||||
}
|
||||
else
|
||||
{
|
||||
result = lcons( makeString(defval), NIL);
|
||||
}
|
||||
|
||||
} else {
|
||||
elog(ERROR,"Internal error in makeConstantList(): cannot encode node");
|
||||
};
|
||||
|
||||
#ifdef PARSEDEBUG
|
||||
printf( "AexprConst argument is \"%s\"\n", defval);
|
||||
elog(DEBUG, "AexprConst argument is \"%s\"\n", defval);
|
||||
#endif
|
||||
|
||||
return( lcons( makeString(defval), NIL));
|
||||
return (result);
|
||||
} /* makeConstantList() */
|
||||
|
||||
|
||||
@ -5095,10 +4922,11 @@ fmtId(char *rawid)
|
||||
};
|
||||
|
||||
#ifdef PARSEDEBUG
|
||||
printf("fmtId- %sconvert %s to %s\n", ((cp == rawid)? "do not ": ""), rawid, cp);
|
||||
elog(DEBUG, "fmtId- %sconvert %s to %s\n",
|
||||
((cp == rawid)? "do not ": ""), rawid, cp);
|
||||
#endif
|
||||
|
||||
return(cp);
|
||||
return (cp);
|
||||
}
|
||||
|
||||
/*
|
||||
|
||||
Loading…
Reference in New Issue
Block a user