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Replace TupleTableSlot convention for whole-row variables and function

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results with tuples as ordinary varlena Datums.  This commit does not
in itself do much for us, except eliminate the horrid memory leak
associated with evaluation of whole-row variables.  However, it lays the
groundwork for allowing composite types as table columns, and perhaps
some other useful features as well.  Per my proposal of a few days ago.
This commit is contained in:
Tom Lane
2004-04-01 21:28:47 +00:00
parent 8590a62b75
commit 375369acd1
60 changed files with 1779 additions and 1733 deletions
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13
src/include/nodes/execnodes.h
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/nodes/execnodes.h,v 1.114 2004/03/17 20:48:42 tgl Exp $
* $PostgreSQL: pgsql/src/include/nodes/execnodes.h,v 1.115 2004/04/01 21:28:46 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -563,6 +563,17 @@ typedef struct SubPlanState
FmgrInfo *hashfunctions; /* lookup data for hash functions */
} SubPlanState;
/* ----------------
* FieldSelectState node
* ----------------
*/
typedef struct FieldSelectState
{
ExprState xprstate;
ExprState *arg; /* input expression */
TupleDesc argdesc; /* tupdesc for most recent input */
} FieldSelectState;
/* ----------------
* CaseExprState node
* ----------------