Math operators : Set « Procedure Function « SQL / MySQL

1. SQL / MySQL
2. Procedure Function
3. Set

Math operators

 
mysql>
mysql> delimiter $$
mysql>
mysql> CREATE PROCEDURE myProc()
    -> BEGIN
    ->         DECLARE a INT DEFAULT 2;
    ->         DECLARE b INT DEFAULT 3;
    ->         DECLARE c FLOAT;
    ->
    ->         SET c=a+b; SELECT 'a+b=',c;
    ->         SET c=a/b; SELECT 'a/b=',c;
    ->         SET c=a*b; SELECT 'a*b=',c;
    ->
    -> END$$
Query OK, 0 rows affected (0.00 sec)

mysql>
mysql> delimiter ;
mysql>
mysql> call myProc();
+------+------+
| a+b= | c    |
+------+------+
| a+b= |    5 |
+------+------+
1 row in set (0.00 sec)

+------+----------+
| a/b= | c        |
+------+----------+
| a/b= | 0.666667 |
+------+----------+
1 row in set (0.02 sec)

+------+------+
| a*b= | c    |
+------+------+
| a*b= |    6 |
+------+------+
1 row in set (0.02 sec)

Query OK, 0 rows affected (0.02 sec)

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

mysql>
mysql>

        

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