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  1. MariaDB ColumnStore
  2. MCOL-424

cross engine subquery losing where clause causing incorrect results

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    Details

    • Type: Bug
    • Status: Closed (View Workflow)
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 1.0.6
    • Component/s: None
    • Labels:
      None
    • Sprint:
      2016-23

      Description

      Query:
      SELECT * FROM trans_test t WHERE t.`member_id` IN (SELECT id FROM member_test WHERE id =1)

      It is returning all rows from member_test

      In info.log on um1, I can see the following:
      CAL0000: QUERY to foreign engine: SELECT id FROM member_test

      It looks as if the where condition is being excluded

      SELECT * FROM trans_test t WHERE t.`member_id` IN (1) yields the correct result. I would expect the same result from the above query.

      Steps to repro:

      CREATE TABLE `trans_test` (
        `id` int(11) DEFAULT NULL,
        `member_id` int(11) DEFAULT NULL,
        `name` varchar(50) DEFAULT NULL
      ) ENGINE=Columnstore DEFAULT CHARSET=latin1;
       
      /*Data for the table `trans_test` */
       
      insert  into `trans_test`(`id`,`member_id`,`name`) values (1,1,'trans 1');
      insert  into `trans_test`(`id`,`member_id`,`name`) values (2,2,'trans 2');
      insert  into `trans_test`(`id`,`member_id`,`name`) values (3,1,'trans 3');
      insert  into `trans_test`(`id`,`member_id`,`name`) values (4,2,'trans 4');
      insert  into `trans_test`(`id`,`member_id`,`name`) values (5,1,'trans 5');
       
       
      CREATE TABLE `member_test` (
        `id` int(11) NOT NULL AUTO_INCREMENT,
        `name` varchar(50) NOT NULL,
        PRIMARY KEY (`id`)
      ) ENGINE=MyISAM DEFAULT CHARSET=latin1;
       
      /*Data for the table `member_test` */
       
      insert  into `member_test`(`id`,`name`) values (1,'member 1');
      insert  into `member_test`(`id`,`name`) values (2,'member 2');
      insert  into `member_test`(`id`,`name`) values (3,'member 3');
       
      SELECT * FROM trans_test t WHERE t.`member_id` IN (SELECT id FROM member_test WHERE id =1);
      

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              Assignee:
              dleeyh Daniel Lee
              Reporter:
              dthompson David Thompson (Inactive)
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                Dates

                Created:
                Updated:
                Resolved:

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