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Posted to issues@calcite.apache.org by "Julian Hyde (JIRA)" <ji...@apache.org> on 2018/05/26 05:34:00 UTC

[jira] [Updated] (CALCITE-2247) Simplify AND and OR conditions using predicates

     [ https://issues.apache.org/jira/browse/CALCITE-2247?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Julian Hyde updated CALCITE-2247:
---------------------------------
    Summary: Simplify AND and OR conditions using predicates  (was: Add rule to push conditions into a related disjunctive expression)

> Simplify AND and OR conditions using predicates
> -----------------------------------------------
>
>                 Key: CALCITE-2247
>                 URL: https://issues.apache.org/jira/browse/CALCITE-2247
>             Project: Calcite
>          Issue Type: Improvement
>            Reporter: Zoltan Haindrich
>            Assignee: Zoltan Haindrich
>            Priority: Major
>
> Simplify expressions like: {code}a = 1 AND (a = 1 OR a = 2){code} to {code}a = 1{code}
> Conditions to apply will be:
> * in an AND condition there exists a comparison(c) and an OR (o)
> * o and c only reference 1 variable
> See HIVE-19097 for more info.



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