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Merge Resdom nodes into TargetEntry nodes to simplify code and save a

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few palloc's.  I also chose to eliminate the restype and restypmod fields
entirely, since they are redundant with information stored in the node's
contained expression; re-examining the expression at need seems simpler
and more reliable than trying to keep restype/restypmod up to date.

initdb forced due to change in contents of stored rules.
This commit is contained in:
Tom Lane
2005-04-06 16:34:07 +00:00
parent 0f3748a28c
commit ad161bcc8a
43 changed files with 537 additions and 799 deletions
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11
src/backend/optimizer/path/allpaths.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/optimizer/path/allpaths.c,v 1.124 2005/03/10 23:21:21 tgl Exp $
* $PostgreSQL: pgsql/src/backend/optimizer/path/allpaths.c,v 1.125 2005/04/06 16:34:05 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -29,6 +29,7 @@
#include "optimizer/var.h"
#include "parser/parsetree.h"
#include "parser/parse_clause.h"
#include "parser/parse_expr.h"
#include "rewrite/rewriteManip.h"
@ -656,12 +657,12 @@ compare_tlist_datatypes(List *tlist, List *colTypes,
{
TargetEntry *tle = (TargetEntry *) lfirst(l);
if (tle->resdom->resjunk)
if (tle->resjunk)
continue; /* ignore resjunk columns */
if (colType == NULL)
elog(ERROR, "wrong number of tlist entries");
if (tle->resdom->restype != lfirst_oid(colType))
differentTypes[tle->resdom->resno] = true;
if (exprType((Node *) tle->expr) != lfirst_oid(colType))
differentTypes[tle->resno] = true;
colType = lnext(colType);
}
if (colType != NULL)
@ -740,7 +741,7 @@ qual_is_pushdown_safe(Query *subquery, Index rti, Node *qual,
/* Must find the tlist element referenced by the Var */
tle = get_tle_by_resno(subquery->targetList, var->varattno);
Assert(tle != NULL);
Assert(!tle->resdom->resjunk);
Assert(!tle->resjunk);
/* If subquery uses DISTINCT or DISTINCT ON, check point 3 */
if (subquery->distinctClause != NIL &&