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Un-break EXPLAIN for Append plans. I messed this up a few days ago while

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adding the ModifyTable node type --- I had been thinking ModifyTable should
replace Append as a special case in push_plan(), but actually both of them
have to be special-cased.
This commit is contained in:
Tom Lane 2009-10-28 18:51:56 +00:00
parent be6899f139
commit 77c666fe42
1 changed files with 10 additions and 5 deletions
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15
src/backend/utils/adt/ruleutils.c
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@ -9,7 +9,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/adt/ruleutils.c,v 1.312 2009/10/28 17:36:50 tgl Exp $
* $PostgreSQL: pgsql/src/backend/utils/adt/ruleutils.c,v 1.313 2009/10/28 18:51:56 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -3370,11 +3370,16 @@ static void
push_plan(deparse_namespace *dpns, Plan *subplan)
{
/*
* We special-case ModifyTable to pretend that the first child plan is the
* OUTER referent; otherwise normal. This is to support RETURNING lists
* containing references to non-target relations.
* We special-case Append to pretend that the first child plan is the
* OUTER referent; we have to interpret OUTER Vars in the Append's tlist
* according to one of the children, and the first one is the most
* natural choice. Likewise special-case ModifyTable to pretend that the
* first child plan is the OUTER referent; this is to support RETURNING
* lists containing references to non-target relations.
*/
if (IsA(subplan, ModifyTable))
if (IsA(subplan, Append))
dpns->outer_plan = (Plan *) linitial(((Append *) subplan)->appendplans);
else if (IsA(subplan, ModifyTable))
dpns->outer_plan = (Plan *) linitial(((ModifyTable *) subplan)->plans);
else
dpns->outer_plan = outerPlan(subplan);