"Rughwani, Devashish (Devashish)" <[EMAIL PROTECTED]> wrote:
>
> Is it possible to make a column of TEXT data type as PRIMARY key ?
>
> How to give the lenght for the below error ?
> "ERROR 1170 (42000): BLOB/TEXT column 'colname' used in key specification
> without a key length"
>
For BLOB/TEXT column you can create index only on the prefix of column. For example:
mysql> CREATE TABLE t1(
-> mytext TEXT,
-> PRIMARY KEY (mytext(100)));
Query OK, 0 rows affected (0.01 sec)
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