RAND(20) : RAND « Math Numeric Functions « MySQL Tutorial

1. MySQL Tutorial
2. Math Numeric Functions
3. RAND

SELECT RAND(20);
+------------------+
| RAND(20)         |
+------------------+
| 0.15888261251047 |
+------------------+
1 row in set (0.00 sec)

mysql>
mysql> SELECT RAND(20);
+------------------+
| RAND(20)         |
+------------------+
| 0.15888261251047 |
+------------------+
1 row in set (0.00 sec)

mysql>