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https://issues.apache.org/jira/browse/DRILL-2648?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Deneche A. Hakim closed DRILL-2648.
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Resolution: Duplicate
> CONVERT_FROM gives no specific message with called with bad type value
> ----------------------------------------------------------------------
>
> Key: DRILL-2648
> URL: https://issues.apache.org/jira/browse/DRILL-2648
> Project: Apache Drill
> Issue Type: Bug
> Reporter: Daniel Barclay (Drill)
>
> Invoking CONVERT_FROM like this:
> SELECT CONVERT_FROM(CAST(NULL AS INTEGER), '') FROM
> INFORMATION_SCHEMA.CATALOGS;
> yields errors with no useful information (nothing specific to the problem):
> 0: jdbc:drill:zk=local> SELECT CONVERT_FROM(CAST(NULL AS INTEGER), '') FROM
> INFORMATION_SCHEMA.CATALOGS;
> Query failed: AssertionError:
> Error: exception while executing query: Failure while executing query.
> (state=,code=0)
> 0: jdbc:drill:zk=local>
> Invoking CONFIRM_FROM with a bad type string should yield a message saying
> that the type string was unrecognized (and eventually should list all valid
> type strings that Drill knows).
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