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Posted to dev@phoenix.apache.org by "Ankit Singhal (Jira)" <ji...@apache.org> on 2020/05/06 01:36:00 UTC

[jira] [Created] (PHOENIX-5884) Join query return empty result when filters for both the tables are present

Ankit Singhal created PHOENIX-5884:
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             Summary: Join query return empty result when filters for both the tables are present
                 Key: PHOENIX-5884
                 URL: https://issues.apache.org/jira/browse/PHOENIX-5884
             Project: Phoenix
          Issue Type: Bug
            Reporter: Ankit Singhal
            Assignee: Ankit Singhal


Let's assume DDL to be same for both the tables involved in a join
{code}
CREATE TABLE LeftTable (    id1 CHAR(6) NOT NULL,    id2 VARCHAR(22) NOT NULL,    id3 VARCHAR(12) NOT NULL,    id4 CHAR(2) NOT NULL,    id5 CHAR(6) NOT NULL,     id6 VARCHAR(200) NOT NULL,    id7 VARCHAR(50) NOT NULL,    ts TIMESTAMP ,    CONSTRAINT PK_JOIN_AND_INTERSECTION_TABLE PRIMARY KEY(id1,id2,id3,id4,id5,id6,id7))
{code}

Following query return right results
{code}
SELECT m.*,r.* FROM LEFT_TABLE m join RIGHT_TABLE r  on m.id3 = r.id3 and m.id2 = r.id2  and m.id4 = r.id4  and m.id5 = r.id5  and m.id1 = r.id1  and m.ts = r.ts  where  r.id1 IN ('201904','201905')  and r.id2 = 'ID2_VAL'  and r.id3 IN ('ID3_VAL','ID3_VAL2') 
{code

but When to optimize the query, filters for the left table are also added , query returned empty result . Though the filters are based on join condition so semantically above query and below query should be same.
{code}
SELECT m.*,r.* FROM LEFT_TABLE m join RIGHT_TABLE r  on m.id3 = r.id3  and m.id2 = r.id2  and m.id4 = r.id4 and m.id5 = r.id5  and m.id1 = r.id1 and m.ts = r.ts  where m.id1 IN ('201904','201905')  and r.id1 IN ('201904','201905') and r.id2 = 'ID2_VAL'             and m.id3 IN ('ID3_VAL','ID3_VAL2')  and r.id3 IN ('ID3_VAL','ID3_VAL2') 
{code}



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