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Xurenhe updated CALCITE-3217: ----------------------------- Description: Should Calcite need to support null column, such as: {code:java} //代码占位符 select null{code} In the version of "1.20.0", it throws exception in `org.apache.calcite.sql.validate.SqlValidatorImpl#inferUnknownTypes`. was: Should Calcite need to support null column, such as: {code:java} //代码占位符 select null{code} In 1.20.0's version, it throws exception in {code:java} org.apache.calcite.sql.validate.SqlValidatorImpl#inferUnknownTypes {code} > Should Calcite support "select null"? > -------------------------------------- > > Key: CALCITE-3217 > URL: https://issues.apache.org/jira/browse/CALCITE-3217 > Project: Calcite > Issue Type: Improvement > Components: core > Reporter: Xurenhe > Priority: Minor > > > Should Calcite need to support null column, such as: > {code:java} > //代码占位符 > select null{code} > In the version of "1.20.0", it throws exception in > `org.apache.calcite.sql.validate.SqlValidatorImpl#inferUnknownTypes`. > -- This message was sent by Atlassian JIRA (v7.6.14#76016)