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Implement CASE expression.

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This commit is contained in:
Thomas G. Lockhart
1998-12-04 15:34:49 +00:00
parent 19740e2fff
commit bedd04a551
17 changed files with 779 additions and 110 deletions
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4
src/include/optimizer/clauses.h
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@@ -6,7 +6,7 @@
*
* Copyright (c) 1994, Regents of the University of California
*
* $Id: clauses.h,v 1.13 1998/09/01 04:36:53 momjian Exp $
* $Id: clauses.h,v 1.14 1998/12/04 15:34:49 thomas Exp $
*
*-------------------------------------------------------------------------
*/
@@ -34,6 +34,8 @@ extern Expr *get_notclausearg(Expr *notclause);
extern bool and_clause(Node *clause);
extern Expr *make_andclause(List *andclauses);
extern bool case_clause(Node *clause);
extern List *pull_constant_clauses(List *quals, List **constantQual);
extern void clause_get_relids_vars(Node *clause, List **relids, List **vars);
extern int NumRelids(Node *clause);