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  1. MariaDB Server
  2. MDEV-23656

view: removal of parentheses results in wrong result

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      Description

      might be related to MDEV-13673:

      Parentheses in view were optimized out, which ends up in wrong result:

       
      mysql> create table t1 (a int, b decimal(10,2));
      Query OK, 0 rows affected (0,02 sec)
       
      mysql> insert into t1 values (1, 10.2);
      Query OK, 1 row affected (0,01 sec)
       
      mysql> create view v1 as select avg(b) / (2 + a) from t1;
      Query OK, 0 rows affected (0,00 sec)
       
      mysql> select * from v1;
      +------------------+
      | avg(b) / (2 + a) |
      +------------------+
      |     6.1000000000 |
      +------------------+
      1 row in set (0,00 sec)
       
      mysql> select avg(b) / (2 + a) from t1;
      +------------------+
      | avg(b) / (2 + a) |
      +------------------+
      |     3.4000000000 |
      +------------------+
      1 row in set (0,00 sec)
      

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              Assignee:
              serg Sergei Golubchik
              Reporter:
              georg Georg Richter
              Votes:
              1 Vote for this issue
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                Created:
                Updated:
                Resolved: