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53 Commits

Author SHA1 Message Date
Vicențiu Ciorbaru
9a5930bcdf Implement first_value and last_value as window functions 
Currently the implementation doesn't support removal, thus the
computation is performed by running over the window frame again.
 2016-09-24 15:12:34 +02:00
Vicențiu Ciorbaru
23e8b508a0 MDEV-10059: Compute window functions with same sorting criteria simultaneously 
Perform only one table scan for each window function present. We do this
by keeping keeping cursors for each window function frame bound and
running them for each function for every row.
 2016-09-09 18:32:35 +03:00
Galina Shalygina
be1d06c8a5 Merge branch '10.2' into 10.2-mdev9864 2016-05-08 23:04:41 +03:00