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...
DATE_ADD(now(),INTERVAL 1 DAY);...
mysql -h ***.***.***.*** -P 3306 -u root -pmysqldump -h ***.***.***.*** -P 3...
排名函数是SQL SERVER2005新增的函数。排名函数总共有四种,分别是:row_number、rank、 dense_rank 、ntile。row_number:顺序生成序号。rank:相同的...
SELECT * FROM **** WHERE trim(字段名) REGEXP '[^0-9]'=1...