GitHub user davies opened a pull request:
https://github.com/apache/spark/pull/8287
[SPARK-10090] [SQL] fix decimal scale of division
In TPCDS Q59, the result should be DecimalType(37, 20), but got
Decimal('0.69903637110664268591656984574863203607'), should be
Decimal('0.69903637110664268592').
TODO: add regression tests (we have low coverage for DecimalType in Cast)
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/davies/spark decimal_division
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/8287.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 #8287
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commit 3d5f0911d6df431273fd2d3753df9c4241a9107c
Author: Davies Liu <dav...@databricks.com>
Date: 2015-08-18T22:09:52Z
fix decimal precision of division
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