GitHub user shixuan-fan opened a pull request:
https://github.com/apache/incubator-quickstep/pull/49
QUICKSTEP-20: Added ExecutionGenerator support for Window Aggregation
- Created `WindowAggregationOperationState` and `WindowAggregationOperator`.
- The execution generator could form an execution plan for window
aggregation. Window aggregation operator takes the result of sorting as input,
and output a relation with one extra attribute which is the result of window
aggregation.
- `WindowAggregationOperator::execute()` is a dummy method, it will report
that window aggregation is not supported, and return an empty table based on
the expected output relation.
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/49.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 #49
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commit c6ed1c3063289f61094366c178cd76c09157ceaf
Author: shixuan-fan <[email protected]>
Date: 2016-06-29T20:25:18Z
Created WindowAggregationOperator
commit 678d94dc306e9a85dc9b32f9d5a8f630a08ce78d
Author: shixuan-fan <[email protected]>
Date: 2016-06-30T15:59:21Z
Created WindowAggregationOperationState
commit 3a4eeb81056b4d7f01a6f8fe2dc815e75794b52c
Author: shixuan-fan <[email protected]>
Date: 2016-06-30T16:33:27Z
Added WindowAggregationOperationState in QueryContext
commit 1a83deecb866e977c9d0e3984e9a41139fa5fb12
Author: shixuan-fan <[email protected]>
Date: 2016-06-30T21:52:39Z
Added convertWindowAggregate() in ExecutionGenerator
commit f9d618a83fca6b97d5756b67d606597bcea9de3a
Author: shixuan-fan <[email protected]>
Date: 2016-07-01T18:50:50Z
Added dummy execute() method, window aggregate function will return an
empty table with correct attributes
commit e17b35477277c41ef3e3dd431c47168e92c1eaba
Author: shixuan-fan <[email protected]>
Date: 2016-07-01T19:19:23Z
Minor comment modification
commit 7242806e753e262bc5016c8ff05040f5dbd1c053
Author: shixuan-fan <[email protected]>
Date: 2016-07-01T20:12:13Z
Added unittest
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