Horton

Fix possible crash in partition-wise join.

Robert Haas <rhaas@postgresql.org>

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Commit: f069c91a5793ff6b7884120de748b2005ee7756f
Author: Robert Haas <rhaas@postgresql.org>
Date: 2018-02-05T22:31:57Z
Releases: 11.0 
Fix possible crash in partition-wise join.

The previous code assumed that we'd always succeed in creating
child-joins for a joinrel for which partition-wise join was considered,
but that's not guaranteed, at least in the case where dummy rels
are involved.

Ashutosh Bapat, with some wordsmithing by me.

Discussion: http://postgr.es/m/CAFjFpRf8=uyMYYfeTBjWDMs1tR5t--FgOe2vKZPULxxdYQ4RNw@mail.gmail.com

Files

PathChange+/−
src/backend/optimizer/path/allpaths.c modified +4 −14
src/backend/optimizer/path/joinrels.c modified +0 −16
src/backend/optimizer/util/relnode.c modified +4 −1
src/include/nodes/relation.h modified +9 −5
src/test/regress/expected/partition_join.out modified +25 −18
src/test/regress/sql/partition_join.sql modified +1 −1

Discussion