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When expanding a whole-row Var into a RowExpr during ResolveNew(), attach

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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.
This commit is contained in:
Tom Lane
2008-10-06 17:39:26 +00:00
parent e64bb65aff
commit bf461538e1
13 changed files with 49 additions and 16 deletions
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3
src/backend/nodes/outfuncs.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/nodes/outfuncs.c,v 1.340 2008/10/04 21:56:53 tgl Exp $
* $PostgreSQL: pgsql/src/backend/nodes/outfuncs.c,v 1.341 2008/10/06 17:39:26 tgl Exp $
*
* NOTES
* Every node type that can appear in stored rules' parsetrees *must*
@ -1037,6 +1037,7 @@ _outRowExpr(StringInfo str, RowExpr *node)
WRITE_NODE_FIELD(args);
WRITE_OID_FIELD(row_typeid);
WRITE_ENUM_FIELD(row_format, CoercionForm);
WRITE_NODE_FIELD(colnames);
WRITE_LOCATION_FIELD(location);
}