描述
OrderItems表含有:订单号order_num,quantity产品数量
order_num | quantity |
a1 | 105 |
a2 | 1100 |
a2 | 200 |
a4 | 1121 |
a5 | 10 |
a2 | 19 |
a7 | 5 |
【问题】从 OrderItems 表中检索出所有不同且不重复的订单号(order_num),其中每个订单都要包含 100 个或更多的产品。
【示例结果】返回订单号列order_num
order_num |
a1 |
a2 |
a4 |
示例1
输入:
DROP TABLE IF EXISTS `OrderItems`;
CREATE TABLE IF NOT EXISTS `OrderItems`(
order_num VARCHAR(255) NOT NULL COMMENT '商品订单号',
quantity VARCHAR(255) NOT NULL COMMENT '商品数量'
);
INSERT `OrderItems` VALUES ('a1','105'),('a2','1100'),('a2','200'),('a4','1121'),('a5','10'),('a2','19'),('a7','5')
复制
输出:
a1
a2
a4
答案
select distinct order_num
from OrderItems
where quantity>=100