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Provide tunable knob for x = NULL -> x IS NULL transformation, default to off.

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This commit is contained in:
Peter Eisentraut
2001-09-20 14:20:28 +00:00
parent fd5e95971e
commit a1ee06625c
7 changed files with 100 additions and 50 deletions
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3
src/include/parser/parse_expr.h
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: parse_expr.h,v 1.21 2001/01/24 19:43:27 momjian Exp $
* $Id: parse_expr.h,v 1.22 2001/09/20 14:20:28 petere Exp $
*
*-------------------------------------------------------------------------
*/
@ -20,6 +20,7 @@
#define EXPR_RELATION_FIRST 2
extern int max_expr_depth;
extern bool Transform_null_equals;
extern Node *transformExpr(ParseState *pstate, Node *expr, int precedence);
extern Oid exprType(Node *expr);