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Teach grammar and parser about aggregate(DISTINCT ...). No implementation

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yet, but at least we can give a better error message:
regression=> select count(distinct f1) from int4_tbl;
ERROR:  aggregate(DISTINCT ...) is not implemented yet
instead of 'parser: parse error at or near distinct'.
This commit is contained in:
Tom Lane
1999-12-10 07:37:35 +00:00
parent ecba5d308c
commit 18c3000286
11 changed files with 220 additions and 114 deletions
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16
src/backend/parser/parse_expr.c
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@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/parse_expr.c,v 1.59 1999/11/15 02:00:10 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/parse_expr.c,v 1.60 1999/12/10 07:37:35 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -106,8 +106,10 @@ transformExpr(ParseState *pstate, Node *expr, int precedence)
Node *lexpr = transformExpr(pstate, a->lexpr, precedence);
result = ParseFuncOrColumn(pstate,
"nullvalue", lcons(lexpr, NIL),
&pstate->p_last_resno,
"nullvalue",
lcons(lexpr, NIL),
false, false,
&pstate->p_last_resno,
precedence);
}
break;
@ -116,8 +118,10 @@ transformExpr(ParseState *pstate, Node *expr, int precedence)
Node *lexpr = transformExpr(pstate, a->lexpr, precedence);
result = ParseFuncOrColumn(pstate,
"nonnullvalue", lcons(lexpr, NIL),
&pstate->p_last_resno,
"nonnullvalue",
lcons(lexpr, NIL),
false, false,
&pstate->p_last_resno,
precedence);
}
break;
@ -192,6 +196,8 @@ transformExpr(ParseState *pstate, Node *expr, int precedence)
result = ParseFuncOrColumn(pstate,
fn->funcname,
fn->args,
fn->agg_star,
fn->agg_distinct,
&pstate->p_last_resno,
precedence);
break;