mysql构建一张百万级别数据的表信息测试

表信息:

CREATE TABLE dept( /*部门表*/
deptno MEDIUMINT   UNSIGNED  NOT NULL  DEFAULT 0,  /*编号*/
dname VARCHAR(20)  NOT NULL  DEFAULT "", /*名称*/
loc VARCHAR(13) NOT NULL DEFAULT "" /*地点*/
) ENGINE=MyISAM DEFAULT CHARSET=utf8 ;


CREATE TABLE emp
(empno  MEDIUMINT UNSIGNED  NOT NULL  DEFAULT 0, /*编号*/
ename VARCHAR(20) NOT NULL DEFAULT "", /*名字*/
job VARCHAR(9) NOT NULL DEFAULT "",/*工作*/
mgr MEDIUMINT UNSIGNED NOT NULL DEFAULT 0,/*上级编号*/
hiredate DATE NOT NULL,/*入职时间*/
sal DECIMAL(7,2)  NOT NULL,/*薪水*/
comm DECIMAL(7,2) NOT NULL,/*红利*/
deptno MEDIUMINT UNSIGNED NOT NULL DEFAULT 0 /*部门编号*/
)ENGINE=MyISAM DEFAULT CHARSET=utf8 ;

CREATE TABLE salgrade
(
grade MEDIUMINT UNSIGNED NOT NULL DEFAULT 0,
losal DECIMAL(17,2)  NOT NULL,
hisal DECIMAL(17,2)  NOT NULL
)ENGINE=MyISAM DEFAULT CHARSET=utf8;

测试数据

INSERT INTO salgrade VALUES (1,700,1200);
INSERT INTO salgrade VALUES (2,1201,1400);
INSERT INTO salgrade VALUES (3,1401,2000);
INSERT INTO salgrade VALUES (4,2001,3000);
INSERT INTO salgrade VALUES (5,3001,9999);

为了存储过程能够正常执行,我们需要把命令执行结束符修改

delimiter $$

set global log_bin_trust_function_creators=TRUE;

MySQL创建随机字符串函数:

DROP FUNCTION IF EXISTS rand_string;
DELIMITER $$
CREATE FUNCTION rand_string(n INT)
RETURNS VARCHAR(255)
BEGIN
    DECLARE chars_str varchar(100) DEFAULT 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
    DECLARE return_str varchar(255) DEFAULT '';
    DECLARE i INT DEFAULT 0;
    WHILE i < n DO
        SET return_str = concat(return_str,substring(chars_str , FLOOR(1 + RAND()*62 ),1));
        SET i = i +1;
    END WHILE;
    RETURN return_str;
END $$
DELIMITER ;

 随机数函数:

DELIMITER $$
CREATE FUNCTION rand_num()
RETURNS INT(5)
BEGIN
DECLARE i INT DEFAULT 0;
SET i = FLOOR(10+RAND()*500);
RETURN i;
END $$
DELIMITER ;

 存储过程:

DELIMITER $$
create procedure insert_emp(in start int(10),in max_num int(10))
begin
declare i int default 0; 
#set autocommit =0 把autocommit设置成0
 set autocommit = 0;  
 repeat
 set i = i + 1;
 insert into emp values ((start+i) ,rand_string(6),'SALESMAN',0001,curdate(),2000,400,rand_num());
  until i = max_num
 end repeat;
   commit;
 end $$
DELIMITER ;

 调用存储过程:

call insert_emp(100001,10000000);

 wampserver中开启mysql慢查询:

slow-query-log=On 
;linux中配置路径 
;slow_query_log_file=/data/mysql/log/mysql_slow_query.log 
windows中配置路径 
slow_query_log_file=E:\mysql_slow_query.log 
long_query_time=2 
log_queries_not_using_indexes = ON

第一句是开启慢查询 
第二句是用来定义慢查询日志的路径 
第三句是用来定义查过多少秒的查询算是慢查询,我这里定义的是2秒 
第四句就是记录下没有使用索引的query

 

posted @ 2018-06-19 11:23  zhuzhipeng  阅读(315)  评论(0编辑  收藏  举报