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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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6
src/backend/parser/parse_expr.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/parser/parse_expr.c,v 1.176 2004/08/29 05:06:44 momjian Exp $
* $PostgreSQL: pgsql/src/backend/parser/parse_expr.c,v 1.177 2004/12/11 23:26:42 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -940,6 +940,7 @@ transformExpr(ParseState *pstate, Node *expr)
case T_FieldSelect:
case T_FieldStore:
case T_RelabelType:
case T_ConvertRowtypeExpr:
case T_CaseTestExpr:
case T_CoerceToDomain:
case T_CoerceToDomainValue:
@ -1406,6 +1407,9 @@ exprType(Node *expr)
case T_RelabelType:
type = ((RelabelType *) expr)->resulttype;
break;
case T_ConvertRowtypeExpr:
type = ((ConvertRowtypeExpr *) expr)->resulttype;
break;
case T_CaseExpr:
type = ((CaseExpr *) expr)->casetype;
break;