Mysql HAVING 语法

使用范例： 统计用户的消费情况

select user_id,SUM(gold_use),user_name 

from t_log_use_gold where mtime between 1350144000 and 1350230399 

group by user_id HAVING SUM(gold_use)>='200' 

into outfile "/tmp/2012-10-14.txt";

统计了14号累积消费200块或以上的用户。

具体使用方法：

 

http://www.w3school.com.cn/sql/sql_having.asp

SQL HAVING 语法

SELECT column_name, aggregate_function(column_name) FROM table_name WHERE column_name operator value GROUP BY column_name HAVING aggregate_function(column_name) operator value 

SQL HAVING 实例

我们拥有下面这个 "Orders" 表：

O_Id	OrderDate	OrderPrice	Customer
1	2008/12/29	1000	Bush
2	2008/11/23	1600	Carter
3	2008/10/05	700	Bush
4	2008/09/28	300	Bush
5	2008/08/06	2000	Adams
6	2008/07/21	100	Carter

现在，我们希望查找订单总金额少于 2000 的客户。

我们使用如下 SQL 语句：

SELECT Customer,SUM(OrderPrice) FROM Orders GROUP BY Customer HAVING SUM(OrderPrice)<2000 

结果集类似：

Customer	SUM(OrderPrice)
Carter	1700

现在我们希望查找客户 "Bush" 或 "Adams" 拥有超过 1500 的订单总金额。

我们在 SQL 语句中增加了一个普通的 WHERE 子句：

SELECT Customer,SUM(OrderPrice) FROM Orders WHERE Customer='Bush' OR Customer='Adams' GROUP BY Customer HAVING SUM(OrderPrice)>1500 

结果集：

Customer	SUM(OrderPrice)
Bush	2000
Adams	2000