初始化mysql表格,让自动增加ID字段数字恢复为0
truncate table 表名
select count(id),字段from 表名 group by字段 having count(字段)>1;...
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...
SELECT product_brand FROM shop_product WHERE LENGTH(product_brand)>...
SELECT * FROM **** WHERE trim(字段名) REGEXP '[^0-9]'=1...
DATE_ADD(now(),INTERVAL 1 DAY);...