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Implement feature of new FE/BE protocol whereby RowDescription identifies

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the column by table OID and column number, if it's a simple column
reference.  Along the way, get rid of reskey/reskeyop fields in Resdoms.
Turns out that representation was not convenient for either the planner
or the executor; we can make the planner deliver exactly what the
executor wants with no more effort.
initdb forced due to change in stored rule representation.
This commit is contained in:
Tom Lane
2003-05-06 00:20:33 +00:00
parent 94a3c60324
commit 2cf57c8f8d
32 changed files with 454 additions and 336 deletions
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28
src/backend/optimizer/util/tlist.c
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@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/util/tlist.c,v 1.55 2003/02/15 20:12:40 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/util/tlist.c,v 1.56 2003/05/06 00:20:32 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -117,32 +117,6 @@ create_tl_element(Var *var, int resdomno)
* ---------- GENERAL target list routines ----------
*****************************************************************************/
/*
* new_unsorted_tlist
* Creates a copy of a target list by creating new resdom nodes
* without sort information.
*
* 'targetlist' is the target list to be copied.
*
* Returns the resulting target list.
*
*/
List *
new_unsorted_tlist(List *targetlist)
{
List *new_targetlist = (List *) copyObject((Node *) targetlist);
List *x;
foreach(x, new_targetlist)
{
TargetEntry *tle = (TargetEntry *) lfirst(x);
tle->resdom->reskey = 0;
tle->resdom->reskeyop = (Oid) 0;
}
return new_targetlist;
}
/*
* flatten_tlist
* Create a target list that only contains unique variables.