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https://issues.apache.org/jira/browse/SPARK-12848?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15102797#comment-15102797
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Davies Liu commented on SPARK-12848:
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[~hvanhovell] The `BD` tag only works in Hive, other databases (MySQL,
PostgreSQL, Impala etc) does not need this tag to get decimal work correctly.
The reason I create this JIRA as subtask is that the previous SQL parser can
handler this, but new parser can't (kind of a regression).
> Parse number as decimal
> -----------------------
>
> Key: SPARK-12848
> URL: https://issues.apache.org/jira/browse/SPARK-12848
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Reporter: Davies Liu
>
> Right now, Hive parser will parse 1.23 as double, when it's used with decimal
> columns, you will turn the decimal into double, lose the precision.
> We should follow most database had done, parse 1.23 as double, it will be
> converted into double when used with double.
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