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Promote row expressions to full-fledged citizens of the expression syntax,

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rather than allowing them only in a few special cases as before.  In
particular you can now pass a ROW() construct to a function that accepts
a rowtype parameter.  Internal generation of RowExprs fixes a number of
corner cases that used to not work very well, such as referencing the
whole-row result of a JOIN or subquery.  This represents a further step in
the work I started a month or so back to make rowtype values into
first-class citizens.
This commit is contained in:
Tom Lane
2004-05-10 22:44:49 +00:00
parent 9a939886ac
commit 2f63232d30
34 changed files with 1281 additions and 551 deletions
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3
src/include/executor/executor.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/executor/executor.h,v 1.109 2004/04/01 21:28:46 tgl Exp $
* $PostgreSQL: pgsql/src/include/executor/executor.h,v 1.110 2004/05/10 22:44:49 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -175,6 +175,7 @@ extern TupleTableSlot *ExecInitNullTupleSlot(EState *estate,
TupleDesc tupType);
extern TupleDesc ExecTypeFromTL(List *targetList, bool hasoid);
extern TupleDesc ExecCleanTypeFromTL(List *targetList, bool hasoid);
extern TupleDesc ExecTypeFromExprList(List *exprList);
extern void UpdateChangedParamSet(PlanState *node, Bitmapset *newchg);
typedef struct TupOutputState