pgsql: Make plan_cluster_use_sort cope with no IndexOptInfo for the tar - Mailing list pgsql-committers

Make plan_cluster_use_sort cope with no IndexOptInfo for the target index.

The original coding assumed that such a case represents caller error, but
actually get_relation_info will omit generating an IndexOptInfo for any
index it thinks is unsafe to use.  Therefore, handle this case by returning
"true" to indicate that a seqscan-and-sort is the preferred way to
implement the CLUSTER operation.  New bug in 9.1, no backpatch needed.
Per bug #5985 from Daniel Grace.

Branch
------
master

Details
-------
http://git.postgresql.org/pg/commitdiff/5b8e442953da0bf4950b86c7cb4a6117842aedf7

Modified Files
--------------
src/backend/optimizer/plan/planner.c |   29 ++++++++++++++++++-----------
1 files changed, 18 insertions(+), 11 deletions(-)