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https://issues.apache.org/jira/browse/CALCITE-5343?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17623572#comment-17623572
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Jiajun Xie commented on CALCITE-5343:
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[~mbudiu], There some divide operator unit test in 
[SqlValidatorTest#testNumericOperators|https://github.com/apache/calcite/blob/5d771d8c6d706fda2f6a36332717c64adc657f38/core/src/test/java/org/apache/calcite/test/SqlValidatorTest.java#L4228]

Maybe it is useful for you.


> 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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