事务commit
默认值default
参照完整性
去重distinct
排序order by
字节最大bigint
结束符delimiter
分页limit
临时表create temporary table
刷新权限flush privileges
删除储存过程drop procedure
创建触发器create trigger
拼接concat
主键约束primarykey
备份mysql dump
SELECT * FROM example.employee INTO OUTFILE 'F:/backup/tb_chengji.txt'
mysql>USE db_test ; Database changed mysq|> CREATE INDEX index_subject ON content(subject(3)ASC);
谁看懂了这是要干嘛 给说说