[jira] [Assigned] (HIVE-18996) SubString Druid convertor assuming that index is always constant literal value

["slim bouguerra (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-18996?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

slim bouguerra reassigned HIVE-18996:
-------------------------------------

    Assignee: slim bouguerra

> SubString Druid convertor assuming that index is always constant literal value
> ------------------------------------------------------------------------------
>
>                 Key: HIVE-18996
>                 URL: https://issues.apache.org/jira/browse/HIVE-18996
>             Project: Hive
>          Issue Type: Bug
>            Reporter: slim bouguerra
>            Assignee: slim bouguerra
>            Priority: Minor
>
> Query like the following 
> {code}
> SELECT substring(namespace, CAST(deleted AS INT), 4)
> FROM druid_table_1;
> {code}
> will fail with 
> {code}
> java.lang.AssertionError: not a literal: $13
> 	at org.apache.calcite.rex.RexLiteral.findValue(RexLiteral.java:963)
> 	at org.apache.calcite.rex.RexLiteral.findValue(RexLiteral.java:955)
> 	at org.apache.calcite.rex.RexLiteral.intValue(RexLiteral.java:938)
> 	at org.apache.calcite.adapter.druid.SubstringOperatorConversion.toDruidExpression(SubstringOperatorConversion.java:46)
> 	at org.apache.calcite.adapter.druid.DruidExpressions.toDruidExpression(DruidExpressions.java:120)
> 	at org.apache.calcite.adapter.druid.DruidQuery.computeProjectAsScan(DruidQuery.java:746)
> 	at org.apache.calcite.adapter.druid.DruidRules$DruidProjectRule.onMatch(DruidRules.java:308)
> 	at org.apache.calcite.plan.AbstractRelOptPlanner.fireRule(AbstractRelOptPlanner.java:317)
> {code}
> because is assuming that index is always a constant literal. 



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