Partition pruning doen't work in this case
as described at
http://www.postgresql-archive.org/Partition-pruning-for-Star-Schema-td5995163.html#a5995168
Partition wise join works for ONLY ONE dim table (that is better than
nothing).
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Adding partitioning on the dim tables, with the same keys as those used in
the fact table,
gives any star schema a good chance to use Partition Wise Join / Aggregate
plans.
Will test it soon
Regards
PAscal
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