Xurenhe created CALCITE-4734: -------------------------------- Summary: Materialization-Failed, when meeting same projs in mv. Key: CALCITE-4734 URL: https://issues.apache.org/jira/browse/CALCITE-4734 Project: Calcite Issue Type: Bug Components: core Reporter: Xurenhe Attachments: image-2021-08-13-11-43-54-035.png, image-2021-08-13-11-44-09-504.png
Some user may define some not beautiful mv, but these mv should be worked for rewriting query. For example: {code:java} @Test void testMoreSameExprInMv() { final String mv = "" + "select \"empid\", \"deptno\", sum(\"empid\") as s1, sum(\"empid\") as s2, count(*) as c\n" + "from \"emps\" group by \"empid\", \"deptno\""; final String query = "" + "select sum(\"empid\"), count(*) from \"emps\" group by \"empid\", \"deptno\""; sql(mv, query).ok(); } {code} I try debug code to solve this problem. I find some bug in {code:java} org.apache.calcite.plan.SubstitutionVisitor#getRexShuttle {code} !image-2021-08-13-11-43-54-035.png|thumbnail! !image-2021-08-13-11-44-09-504.png|thumbnail! -- This message was sent by Atlassian Jira (v8.3.4#803005)