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https://issues.apache.org/jira/browse/HIVE-20341?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vineet Garg resolved HIVE-20341.
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Resolution: Duplicate
> Druid Needs Explicit CASTs from Timestamp to STRING when the output of
> timestamp function is used as String
> -----------------------------------------------------------------------------------------------------------
>
> Key: HIVE-20341
> URL: https://issues.apache.org/jira/browse/HIVE-20341
> Project: Hive
> Issue Type: Bug
> Reporter: Nishant Bangarwa
> Priority: Major
>
> Druid timestamp expression functions returns numeric values in form of millis
> since epoch.
> Functions that use the output of the timestamp functions as String return
> different values for tables stored in HIVE and Druid.
> {code}
> SELECT SUBSTRING(to_date(datetime0),4) FROM tableau_orc.calcs;
> | 4-07-25 |
> SELECT SUBSTRING(to_date(datetime0),4) FROM druid_tableau.calcs;
> | 0022400000 |
> SELECT CONCAT(to_date(datetime0),' 00:00:00') FROM tableau_orc.calcs;
> | 2004-07-17 00:00:00 |
> SELECT CONCAT(to_date(datetime0),' 00:00:00') FROM druid_tableau.calcs;
> | 1090454400000 00:00:00 |
> {code}
> We need to add explicit CAST to String before generating Druid expressions.
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