MySQL 如何在一个查询中使用GROUP BY、HAVING和ORDER BY显示和特定范围之间的总和记录
首先让我们创建一个表 –
mysql> CREATE TABLE DemoTable
(
Id INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
CustomerName VARCHAR(20),
ProductPrice INT
);
Query OK, 0 rows affected (0.70 sec)
Mysql
使用insert命令在表中插入一些记录 –
mysql> insert into DemoTable(CustomerName,ProductPrice) values('Chris',600);
Query OK, 1 row affected (0.18 sec)
mysql> insert into DemoTable(CustomerName,ProductPrice) values('David',450);
Query OK, 1 row affected (0.09 sec)
mysql> insert into DemoTable(CustomerName,ProductPrice) values('Chris',980);
Query OK, 1 row affected (0.40 sec)
mysql> insert into DemoTable(CustomerName,ProductPrice) values('Mike',1200);
Query OK, 1 row affected (0.11 sec)
mysql> insert into DemoTable(CustomerName,ProductPrice) values('Chris',400);
Query OK, 1 row affected (0.11 sec)
mysql> insert into DemoTable(CustomerName,ProductPrice) values('David',1200);
Query OK, 1 row affected (0.20 sec)
Mysql
使用select语句显示表中的所有记录 –
mysql> select *from DemoTable;
Mysql
这将产生以下输出 –
+----+--------------+--------------+
| Id | CustomerName | ProductPrice |
+----+--------------+--------------+
| 1 | Chris | 600 |
| 2 | David | 450 |
| 3 | Chris | 980 |
| 4 | Mike | 1200 |
| 5 | Chris | 400 |
| 6 | David | 1200 |
+----+--------------+--------------+
6 rows in set (0.00 sec)
Mysql
以下是显示特定范围数字的查询 –
mysql> select CustomerName,sum(ProductPrice) AS Total_Price
from DemoTable
group by CustomerName
having sum(ProductPrice) between 1600 and 2000
order by CustomerName DESC;
Mysql
这将产生以下输出 –
+--------------+-------------+
| CustomerName | Total_Price |
+--------------+-------------+
| David | 1650 |
| Chris | 1980 |
+--------------+-------------+
2 rows in set (0.00 sec)
Mysql
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