常用命令

1、创建用户并分配权限

GRANT ALL PRIVILEGES ON *.* TO 'zhangyajun'@'localhost' IDENTIFIED BY '810524' WITH GRANT OPTION;

2、修改密码

update mysql.user set password=PASSWORD('8170') where user='root';

FLUSH PRIVILEGES;

3、mysql授权查看

select   user   from  mysql.db  where  db= "len" 查看len数据库已经授权的用户

4、登录

mysql -S /opt/DATA/my3306/my3306.sock -u tpcdevp2 -p****

5、 mysql語句命令行直接執行

mysql -u zhangyajun -p810524 -h 10.10.92.121 -P 3306 -D newmoon -e "load data local infile 'e:/test.txt' into table newmoon.category fields terminated by '    ' lines terminated by '/r/n';"

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6、mysql常用日期操作

查询当天的记录

select * from hb_article_view where TO_DAYS(hb_AddTime)   =   TO_DAYS(NOW())

查询当前这周的数据
SELECT name,submittime FROM enterprise WHERE YEARWEEK(date_format(submittime,'%Y-%m-%d')) = YEARWEEK(now());

查询上周的数据
SELECT name,submittime FROM enterprise WHERE YEARWEEK(date_format(submittime,'%Y-%m-%d')) = YEARWEEK(now())-1;

查询当前月份的数据
select name,submittime from enterprise   where date_format(submittime,'%Y-%m')=date_format(now(),'%Y-%m')

查询距离当前现在6个月的数据
select name,submittime from enterprise where submittime between date_sub(now(),interval 6 month) and now();

查询上个月的数据
select name,submittime from enterprise   where date_format(submittime,'%Y-%m')=date_format(DATE_SUB(curdate(), INTERVAL 1 MONTH),'%Y-%m')

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