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获取MySQL中条件的列总和

2024-04-22 23:06:05 364

让我们首先创建一个表-

mysql> create table DemoTable1489
   -> (
   -> ProductId int,
   -> ProductPrice int
   -> );

使用插入命令在表中插入一些记录-

mysql> insert into DemoTable1489 values(100,900);
mysql> insert into DemoTable1489 values(115,1000);
mysql> insert into DemoTable1489 values(119,2100);
mysql> insert into DemoTable1489 values(125,2100);
mysql> insert into DemoTable1489 values(128,2900);

使用select语句显示表中的所有记录-

mysql> select * from DemoTable1489;

这将产生以下输出-

+-----------+--------------+
| ProductId | ProductPrice |
+-----------+--------------+
|       100 |          900 |
|       115 |         1000 |
|       119 |         2100 |
|       125 |         2100 |
|       128 |         2900 |
+-----------+--------------+
5 rows in set (0.00 sec)

这是获取具有条件的列总和的查询-

mysql> select ProductId div 10,sum(ProductPrice) from DemoTable1489
   -> group by ProductId div 10;

这将产生以下输出-

+------------------+-------------------+
| ProductId div 10 | sum(ProductPrice) |
+------------------+-------------------+
|               10 |               900 |
|               11 |              3100 |
|               12 |              5000 |
+------------------+-------------------+
3 rows in set (0.00 sec)

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获取MySQL中条件的列总和

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