[jira] [Commented] (IGNITE-12847) Incorrect query result

["Maksim Timonin (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/IGNITE-12847?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17272084#comment-17272084 ] 

Maksim Timonin commented on IGNITE-12847:
-----------------------------------------

[~cliffdurden] hi! Thanks for this ticket.

I reproduced your case and found that your query is incorrect:
 # Tables "dept" and "emp" are non-collocated [1] due to there is no defined affinity keys;
 # From docs [1]: _If your query is non-colocated, you have to enable the non-colocated mode of query execution by setting {{SqlFieldsQuery.setDistributedJoins(true)}}; otherwise, the results of the query execution may be incorrect._

So there are 2 ways to fix your query:
 # Make tables collocated. For that queries for creation of tables will be:

 
{code:java}
execute(new SqlFieldsQuery(
 "CREATE TABLE dept (deptno LONG, dname VARCHAR, CONSTRAINT pk_dept PRIMARY KEY (deptno)) WITH \"affinity_key=deptno\";"));

execute(new SqlFieldsQuery(
 "CREATE TABLE emp (deptno LONG, empno LONG, ename VARCHAR, CONSTRAINT pk_emp PRIMARY KEY (empno, deptno)) WITH \"affinity_key=deptno\";"));
 
{code}
    2. Set flag for JOIN query _{{SqlFieldsQuery.setDistributedJoins(true)}}_


[1] https://ignite.apache.org/docs/latest/SQL/distributed-joins#distributed-joins

 

> Incorrect query result 
> -----------------------
>
>                 Key: IGNITE-12847
>                 URL: https://issues.apache.org/jira/browse/IGNITE-12847
>             Project: Ignite
>          Issue Type: Bug
>          Components: sql
>    Affects Versions: 2.9
>         Environment: apache ignite 2.9.0, docker image: apacheignite/ignite:2.9.0
>  
>            Reporter: Alexey Melchakov
>            Assignee: Maksim Timonin
>            Priority: Blocker
>
> This two queries should return same result. 
> {code:java}
> SELECT d.deptno, d.dname, e.empno,
> e.ename FROM emp e
> INNER JOIN dept d
> ON ( e.deptno = d.deptno )
> WHERE EXISTS (SELECT 1 FROM emp t
> WHERE t.mgr = e.empno) AND d.deptno IN ( 10, 20, 30 );
> {code}
>  and
> {code:java}
> SELECT d.deptno, d.dname, e.empno,
> e.ename FROM emp e
> INNER JOIN dept d
> ON ( e.deptno = d.deptno )
> WHERE EXISTS (SELECT 1 FROM emp t
> WHERE t.mgr = e.empno) AND e.deptno IN ( 10, 20, 30 );
> {code}
>  
> The difference in _WHERE_ clause: _AND *d.deptno*_ vs _AND *e.deptno*_
> *But in first case there are no results.*
> In second case a have this one:
> {code:java}
> +--------+------------+-------+-------+
> | DEPTNO | DNAME      | EMPNO | ENAME |
> +--------+------------+-------+-------+
> | 10     | ACCOUNTING | 7839  | KING  |
> +--------+------------+-------+-------+
> {code}
> *This issue is not reproduces on apache ignite 2.7.6*
>  
> Example data:
> {code:java}
> CREATE TABLE dept (deptno LONG,dname VARCHAR,loc VARCHAR,CONSTRAINT pk_dept PRIMARY KEY (deptno));
> CREATE TABLE emp (empno LONG,ename VARCHAR, job VARCHAR, mgr INTEGER, hiredate DATE,sal LONG,comm LONG,deptno LONG,CONSTRAINT pk_emp PRIMARY KEY (empno));
> INSERT INTO dept (deptno, dname, loc) VALUES (10,'ACCOUNTING', 'NEW YORK');INSERT INTO dept (deptno, dname, loc) VALUES(20,'RESEARCH', 'DALLAS');
> INSERT INTO dept (deptno, dname, loc) VALUES(30,'SALES', 'CHICAGO');INSERT INTO emp (empno, ename, job, mgr, hiredate, sal, comm, deptno) VALUES(7839,'KING','PRESIDENT',NULL,to_date('17-11-1981', 'dd-mm-yyyy'), 5000,NULL, 10);
> INSERT INTO emp (empno, ename, job, mgr, hiredate, sal, comm, deptno) VALUES(7698,'BLAKE','MANAGER',7839,to_date('1-5-1981', 'dd-mm-yyyy'), 2850, NULL, 30);
> INSERT INTO emp (empno, ename, job, mgr, hiredate, sal, comm, deptno) VALUES(7782,'CLARK','MANAGER',7839,to_date('9-6-1981', 'dd-mm-yyyy'), 2450,NULL, 10);
> {code}
>  
> Reproduces both in sqlline.sh and IntelliJ IDEA SQL command console
> Command for docker:
> {code:java}
> docker run -it --name \
> -p 47500:47500 \
> -p 47501:47501 \
> -p 10800:10800 \
> -e "CONFIG_URI=https://raw.githubusercontent.com/apache/ignite/master/examples/config/example-cache.xml" apacheignite/ignite:2.9.0
> {code}
>  



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