MySQL Tutorial/Procedure Function/TEXT

TEXT type variable

mysql>
mysql> delimiter $$
mysql>
mysql> CREATE PROCEDURE myProc()
    -> BEGIN
    ->     DECLARE my_text        TEXT;          /* huge  text */
    ->
    ->     set my_text = "www.sqle.ru";
    ->
    ->     select my_text;
    -> END$$
Query OK, 0 rows affected (0.00 sec)
mysql> delimiter ;
mysql>
mysql> call myProc();
+----------------+
| my_text        |
+----------------+
| www.sqle.ru |
+----------------+
1 row in set (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
mysql>
mysql> drop procedure myProc;
Query OK, 0 rows affected (0.00 sec)
mysql>
mysql>

TEXT variable with DEFAULT value

mysql>
mysql> delimiter $$
mysql>
mysql> CREATE PROCEDURE myProc()
    -> BEGIN
    ->     DECLARE l_text TEXT DEFAULT "This is a really long string.  In stored programs we can use text columns fairly freely, but in tables there are some limitations regarding indexing and use in various expressions.";
    ->     select l_text;
    -> END$$
Query OK, 0 rows affected (0.00 sec)
mysql> delimiter ;
mysql>
mysql> call myProc();
+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| l_text                                                                                                                                                                               |
+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| This is a really long string.  In stored programs we can use text columns fairly freely, but in tables there are some limitations regarding indexing and use in various expressions. |
+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
mysql>
mysql> drop procedure myProc;
Query OK, 0 rows affected (0.00 sec)
mysql>
mysql>