To drop a default value, use ALTER col_name DROP DEFAULT: : Alter Table « Table Index « SQL / MySQL






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To drop a default value, use ALTER col_name DROP DEFAULT:

     
mysql>
mysql>
mysql> CREATE TABLE mytbl
    -> (
    ->     j INT,
    ->     c CHAR(1)
    -> );
Query OK, 0 rows affected (0.00 sec)

mysql>
mysql> ALTER TABLE mytbl ALTER j DROP DEFAULT;
Query OK, 0 rows affected (0.01 sec)
Records: 0  Duplicates: 0  Warnings: 0

mysql>
mysql> drop table mytbl;
Query OK, 0 rows affected (0.00 sec)








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