mysql的自动补齐
设置my.cnf : auto-rehash
mysql>use mysql; #这是关键
mysql> select CONCAT('My', 'S', 'QL');...
SELECT * FROM shop_count WHERE DATE(count_date)=current_date(); SELECT * FROM sho...
select count(id),字段from 表名 group by字段 having count(字段)>1;...
DELETE t1 FROM invest_year t1, invest_year t2 WHERE t1.pro_id = t2.pro_id AND t1.pro_year = t...
1.date型转换成int型 UNIX_TIMESTAMP('2007-10-04 22:23:00') 2.int型转换成date型 FROM_UNIXTIME(97599...
SELECT * FROM **** WHERE trim(字段名) REGEXP '[^0-9]'=1...