GitHub user babokim opened a pull request:
https://github.com/apache/tajo/pull/12
Tajo 830: Some filter conditions with a SUBQUERY are removed by optimizer.
I refactored FilterPushDownRule.
FilterPushDown rule
processing when visits each node
- If a target which is corresponding on a filter EvalNode's column is
not FieldEval, do not PushDown.
- Replace filter EvalNode's column with child node's output column.
If there is no child node's output column, do not PushDown.
- When visit ScanNode, add filter eval to ScanNode's qual
- When visit GroupByNode, Find aggregation column in a filter
EvalNode and
. If a parent is HavingNode, add filter eval to parent HavingNode.
. It not, create new HavingNode and set parent's child.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/babokim/tajo TAJO-830
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/tajo/pull/12.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 #12
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commit 922e4b9d820d7f1330097f16392e3c0c65f2e23b
Author: ê¹íì¤ <[email protected]>
Date: 2014-05-20T17:30:38Z
TAJO-830
commit e8e8efe933269abd147dfb0504f7b57e65a08183
Author: ê¹íì¤ <[email protected]>
Date: 2014-05-20T17:37:21Z
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/tajo
commit d8b4fa9b046c8a04cbd6fcd7a5b6724068ff8b1b
Author: ê¹íì¤ <[email protected]>
Date: 2014-05-20T17:42:14Z
Tajo 830: Some filter conditions with a SUBQUERY are removed by optimizer.
=> Remove unused test code
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