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Instead of supposing (wrongly, in the general case) that the rowtype

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of an inheritance child table is binary-compatible with the rowtype of
its parent, invent an expression node type that does the conversion
correctly.  Fixes the new bug exhibited by Kris Shannon as well as a
lot of old bugs that would only show up when using multiple inheritance
or after altering the parent table.
This commit is contained in:
Tom Lane
2004-12-11 23:26:51 +00:00
parent fd536dd257
commit 12b1b5d837
15 changed files with 356 additions and 71 deletions
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4
src/include/nodes/nodes.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2004, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/nodes/nodes.h,v 1.161 2004/09/14 03:21:25 tgl Exp $
* $PostgreSQL: pgsql/src/include/nodes/nodes.h,v 1.162 2004/12/11 23:26:49 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -112,6 +112,7 @@ typedef enum NodeTag
T_FieldSelect,
T_FieldStore,
T_RelabelType,
T_ConvertRowtypeExpr,
T_CaseExpr,
T_CaseWhen,
T_CaseTestExpr,
@@ -145,6 +146,7 @@ typedef enum NodeTag
T_SubPlanState,
T_FieldSelectState,
T_FieldStoreState,
T_ConvertRowtypeExprState,
T_CaseExprState,
T_CaseWhenState,
T_ArrayExprState,