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mysql很强大，每个人都这样说。（我个人只用过mysql的数据库）使用PHP操作mysql，一个让人很难忍受的地方，就是语句不能复杂，一复杂就效率非常慢。只能用简单的SELECT ...FROM .. WHERE ...ORDER BY ...LIMIT...1，不能设置变量。在PHP中连接数据库，sql变量根本就直接报错！但是在mysql命令窗口，sql变量是完全可以用的，而且直到进程

安装mysql 最新版 56brew install mysql启动报错ben:~ soul$ which mysql/usr/local/bin/mysqlben:~ soul$ mysqlERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)解决办法运行ben:

正确的写法：--最先让人想到的写法UPDATE buyer SET is_seller=1 WHERE uid IN (SELECT uid FROM seller) -- 网上的一种UPDATE buyer a,seller b SET a.is_seller=1 WHERE a.uid=b.uid

mysql delete join文档说明：http://www.mysqltutorial.org/mysql-delete-join/例子delete dfrom member_log dleft join member m ON d.uid=m.uidwhere date(d.date)='2014' and m.uid is null ;结构membe...

重现方法执行 select * from test，MySQL自动奔溃关闭，访问其他的表没有问题，单独这个表绝对会这样。报错日志07:30:01 UTC - mysqld got exception 0xc0000005 ;This could be because you hit a bug. It is also possible that this binaryor one of ...