BENCHMARK

Execute an expression repeatedly. This function runs a scalar expression a specified number of times, primarily for measuring query execution speed.

Syntax

BENCHMARK(count,expr)

Description

The BENCHMARK() function executes the expression expr repeatedly count times. It may be used to time how quickly MariaDB processes the expression. The result value is always 0. The intended use is from within the mariadb client, which reports query execution times.

Examples

SELECT BENCHMARK(1000000,ENCODE('hello','goodbye'));
+----------------------------------------------+
| BENCHMARK(1000000,ENCODE('hello','goodbye')) |
+----------------------------------------------+
|                                            0 |
+----------------------------------------------+
1 row in set (0.21 sec)

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