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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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4
src/backend/utils/adt/ruleutils.c
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@@ -9,7 +9,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/adt/ruleutils.c,v 1.249 2007/02/14 01:58:57 tgl Exp $
* $PostgreSQL: pgsql/src/backend/utils/adt/ruleutils.c,v 1.250 2007/02/22 23:44:25 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -2626,7 +2626,7 @@ get_rte_for_var(Var *var, int levelsup, deparse_context *context,
/*
* Try to find the relevant RTE in this rtable. In a plan tree, it's
* likely that varno is OUTER, INNER, or 0, in which case we try to use
* likely that varno is OUTER or INNER, in which case we try to use
* varnoold instead. If the Var references an expression computed by a
* subplan, varnoold will be 0, and we fall back to looking at the special
* subplan RTEs.