Commits on Jan 10, 2024

1. Do not filter nulls from fields that are arguments of NON_NULLABLE fu… …

   …nctions
   
   cr> create table t (a int, b int);
   CREATE OK, 1 row affected (0.210 sec)
   cr> insert into t values (null, null), (null, 2), (2, null), (2, 2);
   INSERT OK, 4 rows affected (0.032 sec)
   
   cr> select * from t where a != (b||1);
   +---+---+
   | a | b |
   +---+---+
   | 2 | 2 |  --> missing a row, see below
   +---+---+
   SELECT 1 row in set (0.022 sec)
   
   cr> select a, b, a != (b||1) from t;
   +------+------+----------------------------+
   |    a |    b | (NOT (a = concat(b, '1'))) |
   +------+------+----------------------------+
   | NULL |    2 | NULL                       |
   | NULL | NULL | NULL                       |
   |    2 | NULL | TRUE                       | --> this row is missing from the result of the query above
   |    2 |    2 | TRUE                       |     because of an unwanted FieldExistsQuery over field 'b'
   +------+------+----------------------------+
   SELECT 4 rows in set (0.023 sec)

   

   jeeminso committed Jan 10, 2024
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