查询重复数据mysql
select count(id),字段from 表名 group by字段 having count(字段)>1;
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...
mysql> select CONCAT('My', 'S', 'QL');...
mysql -h ***.***.***.*** -P 3306 -u root -pmysqldump -h ***.***.***.*** -P 3...
SELECT product_brand FROM shop_product WHERE LENGTH(product_brand)>...
DATE_ADD(now(),INTERVAL 1 DAY);...
SELECT CURDATE()当天日期...