GitHub user davies opened a pull request:
https://github.com/apache/spark/pull/7642
[SPARK-9281] [SQL] use decimal or double when parsing SQL
Right now, we use double to parse all the float number in SQL. When it's
used in expression together with DecimalType, it will turn the decimal into
double as well. Also it will loss some precision when using double.
This PR change to parse float number to decimal or double, based on it's
using scientific notation or not, see
https://msdn.microsoft.com/en-us/library/ms179899.aspx
This is a break change, should we doc it somewhere?
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/davies/spark parse_decimal
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/7642.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 #7642
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commit 1c48e340e042cb1bd7ab8984ef856c3883e0969b
Author: Davies Liu <[email protected]>
Date: 2015-07-24T07:58:50Z
use decimal or double when parsing SQL
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