In the last episode (Jan 25), Michael Collins said:
> At 10:49 AM -0600 1/25/02, Dan Nelson wrote:
> > > >Which field type do I use for a simply checkbox Y,N?
>
> >The BIT type seems to be the best fit. It's currently a synonym for
> >CHAR(1), but there's a TODO item:
> >
> > * Optimise `BIT' type to take 1 bit (now `BIT' takes 1 char).
>
> Are you thinking MS SQL Server? I am not sure there is a bit type in
> MySQL? Do you mean Char(0)? Anyhow, in MS SQL Server a bit type
> column cannot be indexed so you are better off with CHAR(1).
Why would the MySQL TODO mention an MS SQL feature? :)
mysql> create table test ( myfield bit primary key );
Query OK, 0 rows affected (0.01 sec)
mysql> desc test;
+---------+------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+---------+------------+------+-----+---------+-------+
| myfield | tinyint(1) | | PRI | 0 | |
+---------+------------+------+-----+---------+-------+
1 row in set (0.88 sec)
OK, so it's actually a synonym for tinyint(1).
--
Dan Nelson
[EMAIL PROTECTED]
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