[ https://issues.apache.org/jira/browse/CALCITE-3803?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17038732#comment-17038732 ]
Chunwei Lei commented on CALCITE-3803: -------------------------------------- I opened a pr: [https://github.com/apache/calcite/pull/1815]. Please correct me if I miss something. > Enhance RexSimplify to simplify 'a>1 or (a<3 and b)' to 'a>1 or b' if column > a is not nullable > ---------------------------------------------------------------------------------------------- > > Key: CALCITE-3803 > URL: https://issues.apache.org/jira/browse/CALCITE-3803 > Project: Calcite > Issue Type: Improvement > Components: core > Reporter: Chunwei Lei > Assignee: Chunwei Lei > Priority: Major > Labels: pull-request-available > Time Spent: 10m > Remaining Estimate: 0h > > For {{a>1 or (a<3 and b)}}, with short-circuit, we know {{a<=1}} if {{a>1}} > is false when column a is not nullable. Then {{(a<3 and b) can be simplified > to b}}. Thus, {{a>1 or (a<3 and b)is simplified to a>1 or b.}} -- This message was sent by Atlassian Jira (v8.3.4#803005)