Horton

Fix crash in assign_collations_walker for EXISTS with empty SELECT list.

Tom Lane <tgl@sss.pgh.pa.us>

View on postgr.es
Commit: 6698782f19d938a475c46922ac90e366713fc273
Author: Tom Lane <tgl@sss.pgh.pa.us>
Date: 2013-12-03T01:28:53Z
Releases: 9.2.7 
Fix crash in assign_collations_walker for EXISTS with empty SELECT list.

We (I think I, actually) forgot about this corner case while coding
collation resolution.  Per bug #8648 from Arjen Nienhuis.

Files

PathChange+/−
src/backend/parser/parse_collate.c modified +8 −2
src/test/regress/expected/subselect.out modified +10 −0
src/test/regress/sql/subselect.sql modified +6 −0