GitHub user zellerh opened a pull request:
https://github.com/apache/incubator-trafodion/pull/928
[TRAFODION-2315] Heuristic decision for common subexpressions
This includes various fixes in addition to the heuristic decision,
mainly an improvement on how to navigate between parent and child
common subexpressions and improvement of support for statistics.
Also, see the comment in RelMisc.h (class CommonSubExprRef) for
a definition of some terminology.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/zellerh/incubator-trafodion bug/cses_jan-17
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/incubator-trafodion/pull/928.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 #928
----
commit 2d41556888367183b20dfc75c815c309d59a428c
Author: Hans Zeller <[email protected]>
Date: 2017-01-25T17:37:42Z
[TRAFODION-2315] Heuristic decision for common subexpressions
This includes various fixes in addition to the heuristic decision,
mainly an improvement on how to navigate between parent and child
common subexpressions.
----
---
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.
---
