[jira] [Created] (CALCITE-5732) EnemerableJoin should not return rows match condition null = null

["Viggo Chen (Jira)" <ji...@apache.org>]

Viggo Chen created CALCITE-5732:
-----------------------------------

             Summary: EnemerableJoin should not return rows match condition null = null 
                 Key: CALCITE-5732
                 URL: https://issues.apache.org/jira/browse/CALCITE-5732
             Project: Calcite
          Issue Type: Bug
          Components: linq4j
            Reporter: Viggo Chen
             Fix For: 1.35.0


In `EnumerableJoinTest#testMergeJoinWithCompositeKeyAndNullValues`, the query is like 
{code:java}
select 
  emps.empid
from 
  emps a join emps b
on a.deptno = b.deptno
and a.commission = commission;{code}
and the data is like 
{code:java}
  INSERT INTO "emps" VALUES (100, 10, 'Bill', 10000, 1000);
  INSERT INTO "emps" VALUES (200, 20, 'Eric', 8000, 500);
  INSERT INTO "emps" VALUES (150, 10, 'Sebastian', 7000, null);
  INSERT INTO "emps" VALUES (110, 10, 'Theodore', 11500, 250); {code}
And row with empid = 150 is in expected result. Is this the expected result of join with null condition.



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