MySQL Tutorial/Information Functions/BENCHMARK

BENCHMARK(count,expr) executes the expression expr repeatedly count times. :

mysql>
mysql>
mysql> SELECT BENCHMARK(1000000,ENCODE("hello","goodbye"));
+----------------------------------------------+
| BENCHMARK(1000000,ENCODE("hello","goodbye")) |
+----------------------------------------------+
|                                            0 |
+----------------------------------------------+
1 row in set (0.47 sec)
mysql>