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Replaced targetlist entry in GroupClause by reference number

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in Resdom and GroupClause so changing of resno's doesn't confuse
the grouping any more.

Jan
This commit is contained in:
Jan Wieck
1999-05-12 15:02:39 +00:00
parent 1a87c14c9c
commit 79c2576f77
22 changed files with 242 additions and 199 deletions
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18
src/backend/parser/parse_clause.c
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@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/parse_clause.c,v 1.29 1999/02/23 07:46:42 thomas Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/parse_clause.c,v 1.30 1999/05/12 15:01:50 wieck Exp $
*
*-------------------------------------------------------------------------
*/
@ -550,13 +550,19 @@ transformGroupClause(ParseState *pstate, List *grouplist, List *targetlist)
restarget = findTargetlistEntry(pstate, lfirst(grouplist), targetlist, GROUP_CLAUSE);
grpcl->entry = restarget;
resdom = restarget->resdom;
grpcl->grpOpoid = oprid(oper("<",
resdom->restype,
resdom->restype, false));
if (glist == NIL)
{
int groupref = length(glist) + 1;
restarget->resdom->resgroupref = groupref;
grpcl->tleGroupref = groupref;
gl = glist = lcons(grpcl, NIL);
}
else
{
List *i;
@ -565,11 +571,17 @@ transformGroupClause(ParseState *pstate, List *grouplist, List *targetlist)
{
GroupClause *gcl = (GroupClause *) lfirst(i);
if (gcl->entry == grpcl->entry)
if (equal(get_groupclause_expr(gcl, targetlist),
restarget->expr))
break;
}
if (i == NIL) /* not in grouplist already */
{
int groupref = length(glist) + 1;
restarget->resdom->resgroupref = groupref;
grpcl->tleGroupref = groupref;
lnext(gl) = lcons(grpcl, NIL);
gl = lnext(gl);
}