Concatenate string with integer : Set « Procedure Function « MySQL Tutorial

1. MySQL Tutorial
2. Procedure Function
3. Set

mysql>
mysql> delimiter $$
mysql> CREATE PROCEDURE myProc()
    -> BEGIN
    ->
    ->   DECLARE a INT;
    ->   DECLARE b VARCHAR(20);
    ->   DECLARE c INT;
    ->
    ->   SET a=99;
    ->   SET b="AAA";
    ->   SET c=CONCAT(a," ",b);
    ->   SELECT c;
    -> END$$
Query OK, 0 rows affected (0.00 sec)

mysql>
mysql> delimiter ;
mysql>
mysql> call myProc();
+------+
| c    |
+------+
|   99 |
+------+
1 row in set (0.00 sec)

Query OK, 0 rows affected, 1 warning (0.00 sec)

mysql>
mysql> drop procedure myProc;
Query OK, 0 rows affected (0.00 sec)

mysql>
mysql>