SELECT COALESCE(NULL,NULL,NULL); : COALESCE « Comparison Functions Operators « MySQL Tutorial






  1. MySQL Tutorial
  2. Comparison Functions Operators
  3. COALESCE
mysql>
mysql> SELECT COALESCE(NULL,NULL,NULL);
+--------------------------+
| COALESCE(NULL,NULL,NULL) |
+--------------------------+
| NULL                     |
+--------------------------+
1 row in set (0.00 sec)

mysql>








15.3.COALESCE
15.3.1.SELECT COALESCE(NULL,NULL,NULL);