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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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4
src/include/nodes/nodes.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/nodes.h,v 1.153 2004/05/05 04:48:47 tgl Exp $
* $PostgreSQL: pgsql/src/include/nodes/nodes.h,v 1.154 2004/05/10 22:44:49 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -115,6 +115,7 @@ typedef enum NodeTag
T_CaseWhen,
T_CaseTestExpr,
T_ArrayExpr,
T_RowExpr,
T_CoalesceExpr,
T_NullIfExpr,
T_NullTest,
@@ -145,6 +146,7 @@ typedef enum NodeTag
T_CaseExprState,
T_CaseWhenState,
T_ArrayExprState,
T_RowExprState,
T_CoalesceExprState,
T_CoerceToDomainState,
T_DomainConstraintState,