MySQL/TiDB/GoldenDB

MySql 5.5 tar安装及sysbench 配置

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Next, let’s create the mysql user and group: groupadd mysql useradd -g mysql mysql create mysql soft and data files store dictroy. and install mysql mkdir -p /data/mysql tar zxvf mysql-5.5.36-linux2.6-x86_64.tar.gz mv mysql-5.5.36-linux2.6-x86_64 /data/mysql/ cd /usr/local ln -s /data/mysql/mysql-5.5.36-linux2.6-x86_64/ mysql scripts/mysql_install_db –user=mysql or (./mysql_install_db –user=mysql –basedir=/usr/local/mysql –datadir=/usr/local/mysql/data) Modify File and Directory Permissions cd /data/mysql/ chown … Read more

mysql 无法退出sql命令行编辑

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mysql> insert into core_user(login_name,real_name,password,email,create_time,is_disab…..
‘> quit
‘> exit
‘> bye
‘> ;
‘> \
‘> \c
‘> /c
终止批处理操作吗(Y/N)? y

遇到上面的情况无法终于sql编辑，最后没办法ctrl+c，强退了mysql ,后来找了一下官方文档

MYSQL ERROR 1093 (HY000): You can’t specify target table ‘core_member’ for update in FROM clause

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今天删除mysql库中几条重复2次的记录，有个序列号member_id，取一个人最大用户名删除,没想到mysql语法还不一样

mysql> delete from core_member where member_id in(select max(member_id) from core_member where user_id in(select user_id from core_user where email=’xiangtan@xiangtan.com’) group by user_id);

ERROR 1093 (HY000):…