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  1. MariaDB Server
  2. MDEV-10236

Where expression with NOT function gives incorrect result

Details

    • Bug
    • Status: Closed (View Workflow)
    • Major
    • Resolution: Fixed
    • 10.1.10, 10.1.13, 5.5(EOL), 10.0(EOL), 10.1(EOL)
    • 10.1.15
    • Optimizer
    • None
    • 10.1.15

    Description

      Output:
      ===

      mysql> create table t1(c1 int);
      		 
      Query OK, 0 rows affected (0.01 sec)
      		 
       
      		 
      mysql> insert into t1 values(1);
      		 
      elect *Query OK, 1 row affected (0.00 sec)
      		 
       
      		 
      mysql> select * from t1 where ( (c1 is not null) >= (not true) ) is not null;
      		 
      Empty set (0.00 sec)
      		 
       
      		 
      mysql> select version();
      		 
      +---------------------+
      		 
      | version()           |
      		 
      +---------------------+
      		 
      | 10.1.10-MariaDB-log |
      		 
      +---------------------+
      		 
      1 row in set (0.00 sec)

      Problem:
      ===
      Where condition is expected to be true and rows expected.

      Recreate:
      ===

      drop table t1;
      		 
      create table t1(c1 int);
      		 
      insert into t1 values(1);
      		 
      select * from t1 where ( (c1 is not null) >= (not true) ) is not null;
      		 
       

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            bar Alexander Barkov
            dylan Dylan Su
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            1 Vote for this issue
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            Dates

              Created:
              Updated:
              Resolved:

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