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  1. MariaDB Server
  2. MDEV-36315

Inconsistent query result caused by index

Details

    Description

      I run the following cases, which are expected to return the same query result.

      -- case 1
      		 
      CREATE TABLE t1 (c1 TEXT) ENGINE=InnoDB;
      		 
      INSERT INTO t1 (c1) VALUES ('a');
      		 
      SELECT c1 FROM t1 WHERE CAST(c1 AS BINARY(7)) NOT IN (SELECT c1 FROM t1); -- {a}


      -- case 2
      		 
      CREATE TABLE t1 (c1 TEXT, UNIQUE (c1(1))) ENGINE=InnoDB;
      		 
      INSERT INTO t1 (c1) VALUES ('a');
      		 
      SELECT c1 FROM t1 WHERE CAST(c1 AS BINARY(7)) NOT IN (SELECT c1 FROM t1); -- actual: {}, expected: {a}

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          		2d 9h 24m 1

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            psergei Sergei Petrunia
            John Jove John Jove
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              Updated:

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