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https://issues.apache.org/jira/browse/CALCITE-3331?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Danny Chan updated CALCITE-3331:
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Summary: Support implicit type cast for operators that use single operand
family checker (was: Support implicit type cast for single operand family
checker)
> Support implicit type cast for operators that use single operand family
> checker
> -------------------------------------------------------------------------------
>
> Key: CALCITE-3331
> URL: https://issues.apache.org/jira/browse/CALCITE-3331
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Affects Versions: 1.20.0
> Reporter: Danny Chan
> Assignee: Danny Chan
> Priority: Minor
> Fix For: 1.22.0
>
>
> When the FamilyOperandTypeChecker is used to check single operand data type,
> support implicit type coercion if we can.
> Now some of the sql operator override method #checkOperandTypes, and use the
> SqlSingleOperandTypeChecker#checkSingleOperandType to check the operand data
> type, we should support the implicit type coercion for these operators.
> One impl that need to note:
> we seem always pass the "iformalOperand" as "0" with method
> SqlSingleOperandTypeChecker#checkSingleOperandType when check the single
> operand, we need to pass in the real operand index in the call to the checker.
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