GitHub user willb opened a pull request:
https://github.com/apache/spark/pull/1497
SPARK-2226: transform HAVING clauses with unresolvable attributes
This commit adds an analyzer rule to
1. find expressions in `HAVING` clause filters that depend on unresolved
attributes,
2. push these expressions down to the underlying aggregates, and then
3. project them away above the filter.
It also enables the `HAVING` queries in the Hive compatibility suite.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/willb/spark spark-2226
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/1497.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 #1497
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commit 29a26e3ab6a21e6619f003d905bc7aa7d1cb2976
Author: William Benton <wi...@redhat.com>
Date: 2014-07-17T15:36:37Z
Added rule to handle unresolved attributes in HAVING clauses (SPARK-2226)
commit c7f2b2c8a19b09ec095a316cb965f18d474d7144
Author: William Benton <wi...@redhat.com>
Date: 2014-07-17T17:16:18Z
Whitelist HAVING queries.
Also adds golden outputs for HAVING tests.
commit 5a12647c169ee06bba5355c3956a158699247e43
Author: William Benton <wi...@redhat.com>
Date: 2014-07-19T17:08:17Z
Explanatory comments and stylistic cleanups.
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