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Change Agg and Group nodes so that Vars contained in their targetlists

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and quals have varno OUTER, rather than zero, to indicate a reference to
an output of their lefttree subplan.  This is consistent with the way
that every other upper-level node type does it, and allows some simplifications
in setrefs.c and EXPLAIN.
This commit is contained in:
Tom Lane
2007-02-22 23:44:25 +00:00
parent 3c5985b473
commit cc77005df7
6 changed files with 72 additions and 64 deletions
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13
src/backend/executor/nodeGroup.c
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@ -15,7 +15,7 @@
* locate group boundaries.
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/executor/nodeGroup.c,v 1.68 2007/02/02 00:07:03 tgl Exp $
* $PostgreSQL: pgsql/src/backend/executor/nodeGroup.c,v 1.69 2007/02/22 23:44:24 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -72,9 +72,14 @@ ExecGroup(GroupState *node)
node->grp_done = TRUE;
return NULL;
}
/* Copy tuple, set up as input for qual test and projection */
/* Copy tuple into firsttupleslot */
ExecCopySlot(firsttupleslot, outerslot);
econtext->ecxt_scantuple = firsttupleslot;
/*
* Set it up as input for qual test and projection. The expressions
* will access the input tuple as varno OUTER.
*/
econtext->ecxt_outertuple = firsttupleslot;
/*
* Check the qual (HAVING clause); if the group does not match, ignore
@ -126,7 +131,7 @@ ExecGroup(GroupState *node)
*/
/* Copy tuple, set up as input for qual test and projection */
ExecCopySlot(firsttupleslot, outerslot);
econtext->ecxt_scantuple = firsttupleslot;
econtext->ecxt_outertuple = firsttupleslot;
/*
* Check the qual (HAVING clause); if the group does not match, ignore