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pengzhiwei commented on CALCITE-2438: ------------------------------------- Hi [~julianhyde] ,here is my pr for this problem: [https://github.com/apache/calcite/pull/778] Please have a check for me,thank you! > RexCall#isAlwaysTrue return incorrect result > --------------------------------------------- > > Key: CALCITE-2438 > URL: https://issues.apache.org/jira/browse/CALCITE-2438 > Project: Calcite > Issue Type: Bug > Components: core > Affects Versions: 1.17.0 > Reporter: pengzhiwei > Assignee: Julian Hyde > Priority: Critical > Attachments: 屏幕快照 2018-08-02 下午7.26.20.png, 屏幕快照 2018-08-02 > 下午7.34.26.png > > > In the expression as followed: > {code:java} > ((sal IS NULL) IS NOT NULL) IS FALSE > {code} > The RexCall#isAlwaysTrue return true,however the correct answer is false. > I find the reason is that there is a wrong logic in the isAlwaysTrue,when > getKind() is IS_NOT_FALSE、IS_FALSE and IS_NOT_FALSE : > !屏幕快照 2018-08-02 下午7.34.26.png! > Can you have a check for me,thanks! -- This message was sent by Atlassian JIRA (v7.6.3#76005)