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gram.y: ALL_SUBLINK type was returned for x Op (subquery). 

parse_expr.c: only Op of bool type are supported currently...
This commit is contained in:
Vadim B. Mikheev 1998-02-13 08:10:33 +00:00
parent 64e7adb07b
commit 6eeb3d9eac
2 changed files with 177 additions and 166 deletions
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328
src/backend/parser/gram.y
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@ -10,7 +10,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.1 1998/02/11 04:11:19 thomas Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.2 1998/02/13 08:10:30 vadim Exp $
*
* HISTORY
* AUTHOR DATE MAJOR EVENT
@ -2955,6 +2955,89 @@ row_expr: '(' row_descriptor ')' IN '(' SubSelect ')'
n->subselect = $7;
$$ = (Node *)n;
}
| '(' row_descriptor ')' Op '(' SubSelect ')'
{
SubLink *n = makeNode(SubLink);
n->lefthand = $2;
n->oper = lcons($4, NIL);
if (strcmp($4,"<>") == 0)
n->useor = true;
else
n->useor = false;
n->subLinkType = EXPR_SUBLINK;
n->subselect = $6;
$$ = (Node *)n;
}
| '(' row_descriptor ')' '+' '(' SubSelect ')'
{
SubLink *n = makeNode(SubLink);
n->lefthand = $2;
n->oper = lcons("+", NIL);
n->useor = false;
n->subLinkType = EXPR_SUBLINK;
n->subselect = $6;
$$ = (Node *)n;
}
| '(' row_descriptor ')' '-' '(' SubSelect ')'
{
SubLink *n = makeNode(SubLink);
n->lefthand = $2;
n->oper = lcons("-", NIL);
n->useor = false;
n->subLinkType = EXPR_SUBLINK;
n->subselect = $6;
$$ = (Node *)n;
}
| '(' row_descriptor ')' '/' '(' SubSelect ')'
{
SubLink *n = makeNode(SubLink);
n->lefthand = $2;
n->oper = lcons("/", NIL);
n->useor = false;
n->subLinkType = EXPR_SUBLINK;
n->subselect = $6;
$$ = (Node *)n;
}
| '(' row_descriptor ')' '*' '(' SubSelect ')'
{
SubLink *n = makeNode(SubLink);
n->lefthand = $2;
n->oper = lcons("*", NIL);
n->useor = false;
n->subLinkType = EXPR_SUBLINK;
n->subselect = $6;
$$ = (Node *)n;
}
| '(' row_descriptor ')' '<' '(' SubSelect ')'
{
SubLink *n = makeNode(SubLink);
n->lefthand = $2;
n->oper = lcons("<", NIL);
n->useor = false;
n->subLinkType = EXPR_SUBLINK;
n->subselect = $6;
$$ = (Node *)n;
}
| '(' row_descriptor ')' '>' '(' SubSelect ')'
{
SubLink *n = makeNode(SubLink);
n->lefthand = $2;
n->oper = lcons(">", NIL);
n->useor = false;
n->subLinkType = EXPR_SUBLINK;
n->subselect = $6;
$$ = (Node *)n;
}
| '(' row_descriptor ')' '=' '(' SubSelect ')'
{
SubLink *n = makeNode(SubLink);
n->lefthand = $2;
n->oper = lcons("=", NIL);
n->useor = false;
n->subLinkType = EXPR_SUBLINK;
n->subselect = $6;
$$ = (Node *)n;
}
| '(' row_descriptor ')' Op ANY '(' SubSelect ')'
{
SubLink *n = makeNode(SubLink);
@ -3115,89 +3198,6 @@ row_expr: '(' row_descriptor ')' IN '(' SubSelect ')'
n->subselect = $7;
$$ = (Node *)n;
}
| '(' row_descriptor ')' Op '(' SubSelect ')'
{
SubLink *n = makeNode(SubLink);
n->lefthand = $2;
n->oper = lcons($4, NIL);
if (strcmp($4,"<>") == 0)
n->useor = true;
else
n->useor = false;
n->subLinkType = EXPR_SUBLINK;
n->subselect = $6;
$$ = (Node *)n;
}
| '(' row_descriptor ')' '+' '(' SubSelect ')'
{
SubLink *n = makeNode(SubLink);
n->lefthand = $2;
n->oper = lcons("+", NIL);
n->useor = false;
n->subLinkType = EXPR_SUBLINK;
n->subselect = $6;
$$ = (Node *)n;
}
| '(' row_descriptor ')' '-' '(' SubSelect ')'
{
SubLink *n = makeNode(SubLink);
n->lefthand = $2;
n->oper = lcons("-", NIL);
n->useor = false;
n->subLinkType = EXPR_SUBLINK;
n->subselect = $6;
$$ = (Node *)n;
}
| '(' row_descriptor ')' '/' '(' SubSelect ')'
{
SubLink *n = makeNode(SubLink);
n->lefthand = $2;
n->oper = lcons("/", NIL);
n->useor = false;
n->subLinkType = EXPR_SUBLINK;
n->subselect = $6;
$$ = (Node *)n;
}
| '(' row_descriptor ')' '*' '(' SubSelect ')'
{
SubLink *n = makeNode(SubLink);
n->lefthand = $2;
n->oper = lcons("*", NIL);
n->useor = false;
n->subLinkType = EXPR_SUBLINK;
n->subselect = $6;
$$ = (Node *)n;
}
| '(' row_descriptor ')' '<' '(' SubSelect ')'
{
SubLink *n = makeNode(SubLink);
n->lefthand = $2;
n->oper = lcons("<", NIL);
n->useor = false;
n->subLinkType = EXPR_SUBLINK;
n->subselect = $6;
$$ = (Node *)n;
}
| '(' row_descriptor ')' '>' '(' SubSelect ')'
{
SubLink *n = makeNode(SubLink);
n->lefthand = $2;
n->oper = lcons(">", NIL);
n->useor = false;
n->subLinkType = EXPR_SUBLINK;
n->subselect = $6;
$$ = (Node *)n;
}
| '(' row_descriptor ')' '=' '(' SubSelect ')'
{
SubLink *n = makeNode(SubLink);
n->lefthand = $2;
n->oper = lcons("=", NIL);
n->useor = false;
n->subLinkType = EXPR_SUBLINK;
n->subselect = $6;
$$ = (Node *)n;
}
| '(' row_descriptor ')' Op '(' row_descriptor ')'
{
$$ = makeRowExpr($4, $2, $6);
@ -3614,6 +3614,86 @@ a_expr: attr opt_indirection
}
else $$ = $6;
}
| a_expr Op '(' SubSelect ')'
{
SubLink *n = makeNode(SubLink);
n->lefthand = lcons($1, NULL);
n->oper = lcons($2,NIL);
n->useor = false;
n->subLinkType = EXPR_SUBLINK;
n->subselect = $4;
$$ = (Node *)n;
}
| a_expr '+' '(' SubSelect ')'
{
SubLink *n = makeNode(SubLink);
n->lefthand = lcons($1, NULL);
n->oper = lcons("+",NIL);
n->useor = false;
n->subLinkType = EXPR_SUBLINK;
n->subselect = $4;
$$ = (Node *)n;
}
| a_expr '-' '(' SubSelect ')'
{
SubLink *n = makeNode(SubLink);
n->lefthand = lcons($1, NULL);
n->oper = lcons("-",NIL);
n->useor = false;
n->subLinkType = EXPR_SUBLINK;
n->subselect = $4;
$$ = (Node *)n;
}
| a_expr '/' '(' SubSelect ')'
{
SubLink *n = makeNode(SubLink);
n->lefthand = lcons($1, NULL);
n->oper = lcons("/",NIL);
n->useor = false;
n->subLinkType = EXPR_SUBLINK;
n->subselect = $4;
$$ = (Node *)n;
}
| a_expr '*' '(' SubSelect ')'
{
SubLink *n = makeNode(SubLink);
n->lefthand = lcons($1, NULL);
n->oper = lcons("*",NIL);
n->useor = false;
n->subLinkType = EXPR_SUBLINK;
n->subselect = $4;
$$ = (Node *)n;
}
| a_expr '<' '(' SubSelect ')'
{
SubLink *n = makeNode(SubLink);
n->lefthand = lcons($1, NULL);
n->oper = lcons("<",NIL);
n->useor = false;
n->subLinkType = EXPR_SUBLINK;
n->subselect = $4;
$$ = (Node *)n;
}
| a_expr '>' '(' SubSelect ')'
{
SubLink *n = makeNode(SubLink);
n->lefthand = lcons($1, NULL);
n->oper = lcons(">",NIL);
n->useor = false;
n->subLinkType = EXPR_SUBLINK;
n->subselect = $4;
$$ = (Node *)n;
}
| a_expr '=' '(' SubSelect ')'
{
SubLink *n = makeNode(SubLink);
n->lefthand = lcons($1, NULL);
n->oper = lcons("=",NIL);
n->useor = false;
n->subLinkType = EXPR_SUBLINK;
n->subselect = $4;
$$ = (Node *)n;
}
| a_expr Op ANY '(' SubSelect ')'
{
SubLink *n = makeNode(SubLink);
@ -3774,86 +3854,6 @@ a_expr: attr opt_indirection
n->subselect = $5;
$$ = (Node *)n;
}
| a_expr Op '(' SubSelect ')'
{
SubLink *n = makeNode(SubLink);
n->lefthand = lcons($1, NULL);
n->oper = lcons($2,NIL);
n->useor = false;
n->subLinkType = ALL_SUBLINK;
n->subselect = $4;
$$ = (Node *)n;
}
| a_expr '+' '(' SubSelect ')'
{
SubLink *n = makeNode(SubLink);
n->lefthand = lcons($1, NULL);
n->oper = lcons("+",NIL);
n->useor = false;
n->subLinkType = ALL_SUBLINK;
n->subselect = $4;
$$ = (Node *)n;
}
| a_expr '-' '(' SubSelect ')'
{
SubLink *n = makeNode(SubLink);
n->lefthand = lcons($1, NULL);
n->oper = lcons("-",NIL);
n->useor = false;
n->subLinkType = ALL_SUBLINK;
n->subselect = $4;
$$ = (Node *)n;
}
| a_expr '/' '(' SubSelect ')'
{
SubLink *n = makeNode(SubLink);
n->lefthand = lcons($1, NULL);
n->oper = lcons("/",NIL);
n->useor = false;
n->subLinkType = ALL_SUBLINK;
n->subselect = $4;
$$ = (Node *)n;
}
| a_expr '*' '(' SubSelect ')'
{
SubLink *n = makeNode(SubLink);
n->lefthand = lcons($1, NULL);
n->oper = lcons("*",NIL);
n->useor = false;
n->subLinkType = ALL_SUBLINK;
n->subselect = $4;
$$ = (Node *)n;
}
| a_expr '<' '(' SubSelect ')'
{
SubLink *n = makeNode(SubLink);
n->lefthand = lcons($1, NULL);
n->oper = lcons("<",NIL);
n->useor = false;
n->subLinkType = ALL_SUBLINK;
n->subselect = $4;
$$ = (Node *)n;
}
| a_expr '>' '(' SubSelect ')'
{
SubLink *n = makeNode(SubLink);
n->lefthand = lcons($1, NULL);
n->oper = lcons(">",NIL);
n->useor = false;
n->subLinkType = ALL_SUBLINK;
n->subselect = $4;
$$ = (Node *)n;
}
| a_expr '=' '(' SubSelect ')'
{
SubLink *n = makeNode(SubLink);
n->lefthand = lcons($1, NULL);
n->oper = lcons("=",NIL);
n->useor = false;
n->subLinkType = ALL_SUBLINK;
n->subselect = $4;
$$ = (Node *)n;
}
| a_expr AND a_expr
{ $$ = makeA_Expr(AND, NULL, $1, $3); }
| a_expr OR a_expr

15
src/backend/parser/parse_expr.c
View File

@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/parse_expr.c,v 1.20 1998/02/13 03:41:23 vadim Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/parse_expr.c,v 1.21 1998/02/13 08:10:33 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@ -264,7 +264,7 @@ transformExpr(ParseState *pstate, Node *expr, int precedence)
if (length(left_expr) !=
length(right_expr))
elog(ERROR,"Subselect has too many or too few fields.");
elog(ERROR,"parser: Subselect has too many or too few fields.");
sublink->oper = NIL;
foreach(elist, left_expr)
@ -275,6 +275,17 @@ transformExpr(ParseState *pstate, Node *expr, int precedence)
Expr *op_expr;
op_expr = make_op(op, lexpr, tent->expr);
/*
* HACK! Second IF is more valid but currently
* we don't support EXPR subqueries inside
* expressions generally, only in WHERE clauses.
* After fixing this, first IF must be removed.
*/
if (op_expr->typeOid != BOOLOID)
elog (ERROR, "parser: '%s' must return 'bool' to be used with subquery", op);
if (op_expr->typeOid != BOOLOID &&
sublink->subLinkType != EXPR_SUBLINK)
elog (ERROR, "parser: '%s' must return 'bool' to be used with quantified predicate subquery", op);
sublink->oper = lappend(sublink->oper, op_expr);
right_expr = lnext(right_expr);
}