mysql的字符串连接符
mysql> select CONCAT('My', 'S', 'QL');
mysql -h ***.***.***.*** -P 3306 -u root -pmysqldump -h ***.***.***.*** -P 3...
update 表名 SET log_Content = REPLACE(log_Content,'"upload','"/upload')...
SELECT product_brand FROM shop_product WHERE LENGTH(product_brand)>...
DATE_ADD(now(),INTERVAL 1 DAY);...
SELECT * from system_user LIMIT 60,20limit是设置分页的关键他可以控制数据输出偏移SELECT column_name,column_name FR...
减去一天SELECT DATE_SUB(CURDATE(), INTERVAL 1 DAY);减去一个小时hour(now())-1...