yanlin-Lynn removed a comment on issue #1502: [CALCITE-3407] Add support for interpretering minus/intersect relational set operators URL: https://github.com/apache/calcite/pull/1502#issuecomment-542075342 > Can you also add cases for minus/intersect with `NULL`. e.g. > `(null, null), (null, null) except/all (null, null)` I add tests for `NULL` value, but it cause exception. In this PR, I disable the optimize in `Interpreter` to make the test cases success. And I create a jira [CALCITE-3413](https://issues.apache.org/jira/browse/CALCITE-3413) to track this problem.
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