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https://issues.apache.org/jira/browse/SPARK-14335?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15222761#comment-15222761
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Yong Tang commented on SPARK-14335:
-----------------------------------
I can work on this one. Will provide a pull request shortly.
> Describe function command returns wrong output because some of built-in
> functions are not in function registry.
> ---------------------------------------------------------------------------------------------------------------
>
> Key: SPARK-14335
> URL: https://issues.apache.org/jira/browse/SPARK-14335
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Reporter: Yin Huai
> Priority: Minor
>
> {code}
> %sql describe function `and`
> unction: and
> Class: org.apache.hadoop.hive.ql.udf.generic.GenericUDFOPAnd
> Usage: a and b - Logical and
> {code}
> The output still shows Hive's function because {{and}} is not in our
> FunctionRegistry. Here is a list of such kind of commands
> {code}
> -
> !
> !=
> *
> /
> &
> %
> ^
> +
> <
> <=
> <=>
> <>
> =
> ==
> >
> >=
> |
> ~
> and
> between
> case
> in
> like
> not
> or
> rlike
> when
> {code}
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