diff options
| author | Tom Lane <tgl@sss.pgh.pa.us> | 2008-10-06 17:39:26 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2008-10-06 17:39:26 +0000 |
| commit | bf461538e18b67ec05d89846fcf15fa9c0cb9a74 (patch) | |
| tree | 7603c4ac7537ccf8e0afd51fb992d5d07c0631c5 /src/backend/optimizer/prep/prepunion.c | |
| parent | e64bb65aff3f53b4f56b4a1ee549930b568cec99 (diff) | |
When expanding a whole-row Var into a RowExpr during ResolveNew(), attach
the column alias names of the RTE referenced by the Var to the RowExpr.
This is needed to allow ruleutils.c to correctly deparse FieldSelect nodes
referencing such a construct. Per my recent bug report.
Adding a field to RowExpr forces initdb (because of stored rules changes)
so this solution is not back-patchable; which is unfortunate because 8.2
and 8.3 have this issue. But it only affects EXPLAIN for some pretty odd
corner cases, so we can probably live without a solution for the back
branches.
Diffstat (limited to 'src/backend/optimizer/prep/prepunion.c')
| -rw-r--r-- | src/backend/optimizer/prep/prepunion.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/backend/optimizer/prep/prepunion.c b/src/backend/optimizer/prep/prepunion.c index 0836fde517b..e8b78509475 100644 --- a/src/backend/optimizer/prep/prepunion.c +++ b/src/backend/optimizer/prep/prepunion.c @@ -22,7 +22,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/optimizer/prep/prepunion.c,v 1.156 2008/10/04 21:56:53 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/optimizer/prep/prepunion.c,v 1.157 2008/10/06 17:39:26 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -1493,6 +1493,7 @@ adjust_appendrel_attrs_mutator(Node *node, AppendRelInfo *context) rowexpr->args = fields; rowexpr->row_typeid = var->vartype; rowexpr->row_format = COERCE_IMPLICIT_CAST; + rowexpr->colnames = NIL; rowexpr->location = -1; return (Node *) rowexpr; |