GitHub user SharpRay opened a pull request:
https://github.com/apache/spark/pull/18411
Make sure the date or timestamp related predicate can be pushed down to
Oracle correctly
## What changes were proposed in this pull request?
Override beforeFetch method in OracleDialect to finish the following two
things:
- Set Oracle's NLS_TIMESTAMP_FORMAT to "YYYY-MM-DD HH24:MI:SS.FF" to match
java.sql.Timestamp format.
- Set Oracle's NLS_DATE_FORMAT to "YYYY-MM-DD" to match java.sql.Date
format.
## How was this patch tested?
An integration test has been added.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/SharpRay/spark oracle-date-timestamp-pushdown
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/18411.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 #18411
----
commit 8e69b47be25f63b054dadcd8371c6386b2d6b0c3
Author: Rui Zha <zrdt...@gmail.com>
Date: 2017-06-24T03:03:06Z
[SPARK-18006][SQL] Make sure date or timestamp related predicate is pushed
down correctly
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