Question

您好我正在尝试对mySql数据库的选择性能进行基准测试。我想知道如何多次执行select语句。目前我有以下循环：

BEGIN
label1: LOOP
SET p1 = p1 - 1;
IF p1 > 0 THEN
SELECT * FROM FOOD WHERE ID = p1;
ITERATE label1;
END IF;
LEAVE label1;
END LOOP label1;
END

但是，当在phpMyAdmin中运行此存储过程时，它不会返回任何结果。

更新

存储过程代码

CREATE DEFINER=`root`@`localhost` PROCEDURE `mySelect`(IN `p1` INT)
    DETERMINISTIC
BEGIN
label1: LOOP
SET p1 = p1 - 1;
IF p1 > 0 THEN
SELECT * FROM FOOD where id = p1;
ITERATE label1;
END IF;
LEAVE label1;
END LOOP label1;
END

如何多次执行这样的select语句，例如1000看看运行需要多长时间（ms）？

Answer 1

我同意草莓......我使用了mysqlslap

>mysqlslap --concurrency=50 --iterations=5 --query=test1.sql --create-schema=test -uroot -p
Benchmark
        Average number of seconds to run all queries: 0.031 seconds
        Minimum number of seconds to run all queries: 0.031 seconds
        Maximum number of seconds to run all queries: 0.031 seconds
        Number of clients running queries: 50
        Average number of queries per client: 1

在test1.sql里面我写道：

SELECT * FROM food WHERE id=(1+ FLOOR(RAND() * 10))

如何在mySql中多次执行select语句？

1 个答案: