基于mysql的SQLadvisor工具一次优化尝试

基于mysql的SQLadvisor工具一次优化尝试 使用方式： 1> [root@SQLAdvisor ~]# getenforce  Disabled 安装SQLAdvisor [root@SQLAdvisor ~]# yum -y  install cmake libaio-devel libffi-devel glib2 glib2-devel 2> 配置Percona56 yum源; $ yum install http://www.percona.com/downloads/percona-release/redhat/0.1-3/percona-release-0.1-3.noarch.rpm  # 安装Percona-Server-shared-56; $ yum install Percona-Server-shared-56   3> 查看版本，测试是否安装成功。 [root@xjfw3 ~]# cmake --version cmake version 3.10.0-rc4 CMake suite maintained and supported by Kitware (kitware.com/cmake). 4> 建立软连接 [root@SQLAdvisor ~]# ln -s /usr/lib64/libperconaserverclient_r.so.18 /usr/lib64/libperconaserverclient_r.so 5> 编译依赖项sqlparser [root@SQLAdvisor ~]# cd SQLAdvisor/ [root@SQLAdvisor SQLAdvisor]# cmake -DBUILD_CONFIG=mysql_release -DCMAKE_BUILD_TYPE=debug -DCMAKE_INSTALL_PREFIX=/usr/local/sqlparser ./ [root@SQLAdvisor SQLAdvisor]# make && make install 6> 安装SQLAdvisor [root@SQLAdvisor SQLAdvisor]# cd sqladvisor/ [root@SQLAdvisor sqladvisor]# cmake -DCMAKE_BUILD_TYPE=debug ./ [root@SQLAdvisor sqladvisor]# make [root@SQLAdvisor sqladvisor]# ./sqladvisor --help #####################################自己环境下的一次测试############################# mysql> create database test1 character set utf8mb4; Query OK, 1 row affected (0.00 sec)   mysql> create table user(     -> id INT PRIMARY KEY AUTO_INCREMENT,     -> name VARCHAR(64) NOT NULL,     -> age int,     -> sex int     -> )ENGINE=INNODB DEFAULT CHARSET=utf8mb4; Query OK, 0 rows affected (0.13 sec)   mysql> desc user; +-------+-------------+------+-----+---------+----------------+ | Field | Type        | Null | Key | Default | Extra          | +-------+-------------+------+-----+---------+----------------+ | id    | int(11)     | NO   | PRI | NULL    | auto_increment | | name  | varchar(64) | NO   |     | NULL    |                | | age   | int(11)     | YES  |     | NULL    |                | | sex   | int(11)     | YES  |     | NULL    |                | +-------+-------------+------+-----+---------+----------------+ 4 rows in set (0.01 sec)    * 生成测试数据 mysql> insert into user(name,age, sex) select 'lisea', 25, 1; Query OK, 1 row affected (0.01 sec) Records: 1  Duplicates: 0  Warnings: 0 生产测试数据 insert into user(name,age, sex) select concat(name, '1'), age+1, sex+1 from user;  insert into user(name,age, sex) select concat(name, '2'), age+2, sex from user; insert into user(name,age, sex) select concat(name, '3'), age+2, sex from user; insert into user(name,age, sex) select concat(name, '10'), age+2, sex from user; insert into user(name,age, sex) select concat(name, '11'), age+4, sex from user; --执行两次 结果 [mysql@mysql sqladvisor]$ ./sqladvisor -h 192.168.226.131  -P 16063  -u root -p '6yhn^YHN' -d test1 -q "select * from user where name = 'lisea'" -v 1 2019-10-24 07:36:20 35965 [Note] 第1步: 对SQL解析优化之后得到的SQL:select `*` AS `*` from `test1`.`user` where (`name` = 'lisea')  2019-10-24 07:36:20 35965 [Note] 第2步：开始解析where中的条件:(`name` = 'lisea')  2019-10-24 07:36:20 35965 [Note] show index from user  2019-10-24 07:36:20 35965 [Note] show table status like 'user'  2019-10-24 07:36:20 35965 [Note] select count(*) from ( select `name` from `user` FORCE INDEX( PRIMARY ) order by id DESC limit 10000) `user` where (`name` = 'lisea')   2019-10-24 07:36:20 35965 [Note] 第3步：表user的行数:1045485,limit行数:10000,得到where条件中(`name` = 'lisea')的选择度:10000  2019-10-24 07:36:20 35965 [Note] 第4步：开始验证 字段name是不是主键。表名:user  2019-10-24 07:36:20 35965 [Note] show index from user where Key_name = 'PRIMARY' and Column_name ='name' and Seq_in_index = 1  2019-10-24 07:36:20 35965 [Note] 第5步：字段name不是主键。表名:user  2019-10-24 07:36:20 35965 [Note] 第6步：开始验证 字段name是不是主键。表名:user  2019-10-24 07:36:20 35965 [Note] show index from user where Key_name = 'PRIMARY' and Column_name ='name' and Seq_in_index = 1  2019-10-24 07:36:20 35965 [Note] 第7步：字段name不是主键。表名:user  2019-10-24 07:36:20 35965 [Note] 第8步：开始验证表中是否已存在相关索引。表名:user, 字段名:name, 在索引中的位置:1  2019-10-24 07:36:20 35965 [Note] show index from user where Column_name ='name' and Seq_in_index =1  2019-10-24 07:36:20 35965 [Note] 第9步：开始输出表user索引优化建议:  2019-10-24 07:36:20 35965 [Note] Create_Index_SQL：alter table user add index idx_name(name)  2019-10-24 07:36:20 35965 [Note] 第10步: SQLAdvisor结束!  也可配置文件传参调用 [root@SQLAdvisor sqladvisor]# cat sql.cnf  [sqladvisor] username=root password=123 host=127.0.0.1 port=3306 dbname=test1 sqls=select * from user where name = 'lisea' [root@SQLAdvisor sqladvisor]# ./sqladvisor -f sql.cnf -v 1