Re: Partition Pruning
My *guess* is that it is because you have a data range that spans both of them.
| partitioned_table | pt_201007 | 734350 | 2010-08-01 | 1 |
| partitioned_table | pt_201008 | 734381 | 2010-09-01 | 1 |
If your query looked like:
EXPLAIN PARTITIONS
SELECT COUNT(*)
FROM partitioned_table
WHERE created_dtm >= '2010-08-01'
AND created_dtm < '2010-08-31';
It should only try to hit one.
Shawn
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September 17, 2010 06:04AM
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