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Clean up handling of dropped columns in NAMEDTUPLESTORE RTEs.

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The NAMEDTUPLESTORE patch piggybacked on the infrastructure for
TABLEFUNC/VALUES/CTE RTEs, none of which can ever have dropped columns,
so the possibility was ignored most places.  Fix that, including adding a
specification to parsenodes.h about what it's supposed to look like.

In passing, clean up assorted comments that hadn't been maintained
properly by said patch.

Per bug #14799 from Philippe Beaudoin.  Back-patch to v10.

Discussion: https://postgr.es/m/20170906120005.25630.84360@wrigleys.postgresql.org
This commit is contained in:
Tom Lane
2017-09-06 10:41:05 -04:00
parent 0b554e4e63
commit 8689e38263
5 changed files with 77 additions and 38 deletions
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4
src/backend/optimizer/util/relnode.c
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@ -178,8 +178,8 @@ build_simple_rel(PlannerInfo *root, int relid, RelOptInfo *parent)
case RTE_NAMEDTUPLESTORE:
/*
* Subquery, function, tablefunc, or values list --- set up attr
* range and arrays
* Subquery, function, tablefunc, values list, CTE, or ENR --- set
* up attr range and arrays
*
* Note: 0 is included in range to support whole-row Vars
*/