统计mysql字段值的长度
SELECT product_brand FROM shop_product WHERE LENGTH(product_brand)>3;
SELECT product_brand FROM shop_product WHERE LENGTH(product_brand)>3;
SELECT * FROM shop_count WHERE DATE(count_date)=current_date(); SELECT * FROM sho...
设置my.cnf : auto-rehashmysql>use mysql; #这是关键...
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');...
SELECT CURDATE()当天日期...