GitHub user shixuan-fan opened a pull request:
https://github.com/apache/incubator-quickstep/pull/66
QUICKSTEP-20: RANGE mode and computation optimization
- Supported RANGE mode for window aggregation.
- Optimized the AVG calculation time complexity from O(nk) to O(n), where n
is the number of tuples and k is the window size.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/apache/incubator-quickstep
SQL-window-aggregation
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/incubator-quickstep/pull/66.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #66
----
commit 5726afa96a2250f89df71b1e30313f126dafcffa
Author: shixuan <[email protected]>
Date: 2016-07-26T16:49:07Z
RANGE mode and computation optimization.
- Supported RANGE mode for window aggregation.
- Optimized the AVG calculation time complexity from O(nk) to O(n), where n
is the number of tuples and k is the window size.
----
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
