Information Functions MySQL Tutorial

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  4. BENCHMARK(count,expr) executes the expression expr repeatedly count times
mysql>
mysql> SELECT BENCHMARK(1000000,ENCODE('hello','goodbye'));
+----------------------------------------------+
| BENCHMARK(1000000,ENCODE('hello','goodbye')) |
+----------------------------------------------+
|                                            0 |
+----------------------------------------------+
1 row in set (0.47 sec)
mysql>