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Jinpeng Wu commented on CALCITE-5769: ------------------------------------- Please note that this transformation is not always true, such as the term cast('abc' as double) may return null even when 'abc' is not null. > Optimizing 'CAST(e AS t) IS NOT NULL' to 'e IS NOT NULL' > -------------------------------------------------------- > > Key: CALCITE-5769 > URL: https://issues.apache.org/jira/browse/CALCITE-5769 > Project: Calcite > Issue Type: Bug > Components: core > Affects Versions: 1.34.0 > Reporter: xiong duan > Priority: Major > > According to CALCITE-5156. We should support optimize: > * 'CAST(e AS t) IS NOT NULL' to 'e IS NOT NULL' > * 'CAST(e AS t) IS NULL' to 'e IS NULL' -- This message was sent by Atlassian Jira (v8.20.10#820010)