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  1. MariaDB Server
  2. MDEV-21318

Wrong results with window functions and implicit grouping

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      MariaDB [test]> create table t1(a int) engine=MYISAM;
      Query OK, 0 rows affected (0.01 sec)
       
      MariaDB [test]> SELECT sum(1) as x, row_number() OVER() FROM t1;
      +------+---------------------+
      | x    | row_number() OVER() |
      +------+---------------------+
      | NULL |                NULL |
      +------+---------------------+
      

      1 row in set (0.00 sec)

      The above query return NULL for the window function row_number, which is incorrect.
      When we have implicit grouping window function would be executed once and the result should be 1

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              Assignee:
              varun Varun Gupta
              Reporter:
              varun Varun Gupta
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