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Do honest transformation and preprocessing of LIMIT/OFFSET clauses,

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instead of the former kluge whereby gram.y emitted already-transformed
expressions.  This is needed so that Params appearing in these clauses
actually work correctly.  I suppose some might claim that the side effect
of 'SELECT ... LIMIT 2+2' working is a new feature, but I say this is
a bug fix.
This commit is contained in:
Tom Lane
2003-07-03 19:07:54 +00:00
parent 455891bf96
commit b89140a7ec
8 changed files with 150 additions and 86 deletions
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7
src/include/parser/parse_clause.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: parse_clause.h,v 1.32 2003/06/16 02:03:38 tgl Exp $
* $Id: parse_clause.h,v 1.33 2003/07/03 19:07:53 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -21,7 +21,10 @@ extern int setTargetTable(ParseState *pstate, RangeVar *relation,
bool inh, bool alsoSource);
extern bool interpretInhOption(InhOption inhOpt);
extern Node *transformWhereClause(ParseState *pstate, Node *where);
extern Node *transformWhereClause(ParseState *pstate, Node *clause,
const char *constructName);
extern Node *transformLimitClause(ParseState *pstate, Node *clause,
const char *constructName);
extern List *transformGroupClause(ParseState *pstate, List *grouplist,
List *targetlist, List *sortClause);
extern List *transformSortClause(ParseState *pstate, List *orderlist,