sql, mysql, query
Hello folks
This is my table structure with MySql 4.0.3-beta-max-nt with InnoDB
+---------+------------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+---------+------------------+------+-----+---------+-------+
| town | varchar(50) | | PRI | | |
| subcity | varchar(50) | | MUL | | |
| rankt | int(10) unsigned | | | 0 | |
+---------+------------------+------+-----+---------+-------+
3 rows in set (0.01 sec)
Now I want to have the primary key on both town and subcity fields like this
mysql> describe town_db1 ;
+---------+------------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+---------+------------------+------+-----+---------+-------+
| town | varchar(50) | | PRI | | |
| subcity | varchar(50) | | PRI | | |
| rankt | int(10) unsigned | | | 0 | |
+---------+------------------+------+-----+---------+-------+
3 rows in set (0.00 sec)
I am able to create new table but can't alter the existing one to achieve
this.
Any suggestions with alter syntax is highly appreciated
Thanks for your time
Regards
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