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Finished the Between patch Christopher started.

Implements between (symmetric / asymmetric) as a node.

Executes the left or right expression once, makes a Const out of the
resulting Datum and executes the >=, <= portions out of the Const sets.

Of course, the parser does a fair amount of preparatory work for this to
happen.

Rod Taylor
This commit is contained in:
Bruce Momjian
2002-07-18 04:41:46 +00:00
parent 7ea5f1d7f1
commit 3e22406ec6
15 changed files with 619 additions and 35 deletions

View File

@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: nodes.h,v 1.110 2002/07/11 07:39:27 ishii Exp $
* $Id: nodes.h,v 1.111 2002/07/18 04:41:45 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -226,6 +226,7 @@ typedef enum NodeTag
T_GroupClause,
T_NullTest,
T_BooleanTest,
T_BetweenExpr,
T_CaseExpr,
T_CaseWhen,
T_FkConstraint,