Horton

Don't let transform_null_equals=on affect CASE foo WHEN NULL ... constructs.

Heikki Linnakangas <heikki.linnakangas@iki.fi>

View on postgr.es
Commit: 3a2f6b570fbc6f71447c013e866d554fc515de0e
Author: Heikki Linnakangas <heikki.linnakangas@iki.fi>
Date: 2011-10-08T08:21:14Z
Releases: 8.3.17 
Don't let transform_null_equals=on affect CASE foo WHEN NULL ... constructs.
transform_null_equals is only supposed to affect "foo = NULL" expressions
given directly by the user, not the internal "foo = NULL" expression
generated from CASE-WHEN.

This fixes bug #6242, reported by Sergey. Backpatch to all supported
branches.

Files

PathChange+/−
src/backend/parser/parse_expr.c modified +5 −2