MySQL判断字符串是否是数字
SELECT * FROM **** WHERE trim(字段名) REGEXP '[^0-9]'=1
update 表名 SET log_Content = REPLACE(log_Content,'"upload','"/upload')...
DATE_ADD(now(),INTERVAL 1 DAY);...
mysql -h ***.***.***.*** -P 3306 -u root -pmysqldump -h ***.***.***.*** -P 3...
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 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;...