mysql日期函数

Posted 2020-10-18 滴滴滴--你不是爱拖延，而是爱逃避

SELECT NOW();

SELECT CURDATE();

SELECT YEAR(NOW())

 

SELECT CONCAT("mysqldump ","-uroot ","-p123 ",table_schema," ",table_name,">/tmp/",table_schema,"_",table_name,".sql") 
FROM information_schema.tables
WHERE table_schema=‘world‘
INTO OUTFILE ‘/tmp/world_bak.sh‘

 

 

SHOW GLOBAL STATUS LIKE ‘%innodb%‘

显示连接诶状态

SHOW GLOBAL VARIABLES LIKE ‘%log%‘;

 

show processlist;

 

显示连接数