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Posted to issues@calcite.apache.org by "Amogh Margoor (JIRA)" <ji...@apache.org> on 2016/03/08 07:11:40 UTC

[jira] [Commented] (CALCITE-1130) Add unary operator support for IS_NULL and IS_NOT_NULL to RexImplicationChecker

    [ https://issues.apache.org/jira/browse/CALCITE-1130?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15184489#comment-15184489 ] 

Amogh Margoor commented on CALCITE-1130:
----------------------------------------

PR Raised: https://github.com/apache/calcite/pull/207

> Add unary operator support for IS_NULL and IS_NOT_NULL to RexImplicationChecker
> -------------------------------------------------------------------------------
>
>                 Key: CALCITE-1130
>                 URL: https://issues.apache.org/jira/browse/CALCITE-1130
>             Project: Calcite
>          Issue Type: Improvement
>            Reporter: Amogh Margoor
>            Assignee: Julian Hyde
>
> Currently we support only SQL Comparison operators (SqlKind.COMPARE) for checking if one predicate implies another using RexImplicationChecker.
> We would like to extend it for couple of Unary operators based on user request ( CALCITE-1104): IS_NULL and IS_NOT_NULL



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