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Code review for UPDATE tab SET col = DEFAULT patch ... whack it around

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so it has some chance of working in rules ...
This commit is contained in:
Tom Lane
2003-07-03 16:34:26 +00:00
parent 7b1885bf98
commit 455891bf96
15 changed files with 186 additions and 114 deletions
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15
src/include/nodes/primnodes.h
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@@ -10,7 +10,7 @@
* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: primnodes.h,v 1.86 2003/06/29 00:33:44 tgl Exp $
* $Id: primnodes.h,v 1.87 2003/07/03 16:34:26 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -674,6 +674,19 @@ typedef struct CoerceToDomainValue
int32 typeMod; /* typemod for substituted value */
} CoerceToDomainValue;
/*
* Placeholder node for a DEFAULT marker in an INSERT or UPDATE command.
*
* This is not an executable expression: it must be replaced by the actual
* column default expression during rewriting. But it is convenient to
* treat it as an expression node during parsing and rewriting.
*/
typedef struct SetToDefault
{
Expr xpr;
Oid typeId; /* type for substituted value */
int32 typeMod; /* typemod for substituted value */
} SetToDefault;
/*
* TargetEntry -