[jira] [Resolved] (SPARK-21116) Support map_contains function

["Hyukjin Kwon (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-21116?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hyukjin Kwon resolved SPARK-21116.
----------------------------------
    Resolution: Won't Fix

I would do this with array_contains(map_keys(...), ...)

{code}
scala> sql("select array_contains(map_keys(map(1, 'a', 2, 'b')) , 1)").show()
+--------------------------------------------+
|array_contains(map_keys(map(1, a, 2, b)), 1)|
+--------------------------------------------+
|                                        true|
+--------------------------------------------+
{code}

I am resolving this as the workaround looks so easy and the opinion above.

> Support map_contains function
> -----------------------------
>
>                 Key: SPARK-21116
>                 URL: https://issues.apache.org/jira/browse/SPARK-21116
>             Project: Spark
>          Issue Type: New Feature
>          Components: SQL
>    Affects Versions: 2.0.2, 2.1.1
>            Reporter: darion yaphet
>
> map_contains(map , key)
> Check whether the map contains the key . Returns true if the map contains the key. It's similar with *array_contains*
> for example :  map_contains(map(1, 'a', 2, 'b') , 1) will return true . 



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