GitHub user huaxingao opened a pull request:
https://github.com/apache/spark/pull/10369
[SPARK-12409][SQL]JDBC AND operator push down
For simple AND such as
select * from test where THEID = 1 AND NAME = 'fred',
The filters pushed down to JDBC layers are EqualTo(THEID,1),
EqualTo(Name,fred). These are handled OK by the current code.
For query such as
SELECT * FROM foobar WHERE THEID = 1 OR NAME = 'mary' AND THEID = 2" ,
the filter is Or(EqualTo(THEID,1),And(EqualTo(NAME,mary),EqualTo(THEID,2)))
So need to add And filter in JDBC layer.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/huaxingao/spark spark_12409
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/10369.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 #10369
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commit f5cfd1d038954a4b0fd1f502769fbd3140e7d35b
Author: Huaxin Gao <[email protected]>
Date: 2015-12-17T17:32:24Z
[SPARK-12409][SQL]JDBC AND operator push down
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