[jira] [Commented] (CALCITE-5343) Type of division operator

["Julian Hyde (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CALCITE-5343?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17623381#comment-17623381 ] 

Julian Hyde commented on CALCITE-5343:
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I think what you really want is to change the semantics of division. A change in semantics might imply a change in data type.

Can you search for {{RelDataTypeSystem}} and find related jira cases?

> Type of division operator
> -------------------------
>
>                 Key: CALCITE-5343
>                 URL: https://issues.apache.org/jira/browse/CALCITE-5343
>             Project: Calcite
>          Issue Type: Bug
>          Components: core
>            Reporter: Mihai Budiu
>            Priority: Minor
>
> The Calcite type checker assigns a type of INTEGER (not nullable) to the DIVIDE RexCall in the following statement: `SELECT 1/0`. Some databases, such as MySQL, evaluate this expression to NULL.
> This result is obtained even when using SqlConformanceEnum.MYSQL_5 for the parser and the validator.
> My question is whether there is some other way to influence how type inference is performed for division.



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