[PHOENIX-3683] Backward compatibility fails for joins

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 4.10.0
• Assignee: Samarth Jain
• Reporter: Mujtaba Chohan
• Created: 16/Feb/17 19:38
• Updated: 27/Feb/17 06:21
• Resolved: 27/Feb/17 06:21

Description

Query with joins returns null when client is v4.8.0 and server is 4.x head with https://github.com/apache/phoenix/pull/232 and https://issues.apache.org/jira/browse/PHOENIX-3678 patch applied.

CREATE TABLE Employee (
    Region VARCHAR NOT NULL,
    LocalID VARCHAR NOT NULL,
    Name VARCHAR,
    CONSTRAINT pk PRIMARY KEY (Region, LocalID));

CREATE TABLE Patent (
    PatentID VARCHAR NOT NULL,
    Region VARCHAR,
    LocalID VARCHAR,
    Title VARCHAR,
    Category VARCHAR,
    CONSTRAINT pk PRIMARY KEY (PatentID));

upsert into employee values ('region1','local1','foo');
upsert into patent values ('patent1', 'region1','local1','title1','cat1');

SELECT E.Name, E.Region, P.PCount
FROM Employee AS E
JOIN
    (SELECT Region, LocalID, count(*) AS PCount
     FROM Patent
     GROUP BY Region, LocalID) AS P
ON E.Region = P.Region AND E.LocalID = P.LocalID;

Resultset returns

+---------+-----------+-----------+
| E.NAME  | E.REGION  | P.PCOUNT  |
+---------+-----------+-----------+
|         | region1   | null      |
+---------+-----------+-----------+