Question

我有这个问题：

select 
(select GETDATE()) as Date,
(select ROUND(sum(QuantityInStore * AveragePrice),2) as "Photo" 
from 
      inventoryinfo, 
      InventoryStoreInfo 
WHERE 
      InventoryCategoryID IN 
      ('3','6','19','22','23','40','32','56','52','41'))

结果很好，但列名不适用于“Photo”列。日期确实显示。照片读取（无列名称）。

Answer 1

试试这个：

select 
(select GETDATE()) as Date,
(select 
    ROUND(sum(QuantityInStore * AveragePrice),2)
from 
      inventoryinfo, 
      InventoryStoreInfo 
WHERE 
      InventoryCategoryID IN 
      ('3','6','19','22','23','40','32','56','52','41')
 ) as Photo

Answer 2

尝试此查询

select  GETDATE() AS [Date]
        ,ROUND(sum(QuantityInStore * AveragePrice),2) as [Photo]
        ,ROUND(sum(QuantityInStore * AveragePrice),2) as COG_Facilities -- Add other outputs here
from 
      inventoryinfo, 
      InventoryStoreInfo 
WHERE 
      InventoryCategoryID IN 
      ('3','6','19','22','23','40','32','56','52','41')

Answer 3

看看你用照片的双引号（“”）。不需要双引号（“”）只需使用Photo

您的代码可能喜欢

select 
(select GETDATE()) as Date,
(select ROUND(sum(QuantityInStore * AveragePrice),2) as Photo
from inventoryinfo, InventoryStoreInfo
WHERE InventoryCategoryID IN('3','6','19','22','23','40','32','56','52','41'))

Answer 4

你失去了照片＆＃34;列名，因为您使用的是子表，而名称只是可见的内部选择范围。

ROUND(sum(QuantityInStore * AveragePrice),2) as "Photo"嵌套在(select ...)内，因此外部选择无法看到＆＃34;照片＆＃34;。只有总和子表格的名称为“＃34; Photo＆＃34;”，而不是整个Round子表。

只需将名称添加到您想要命名的整个子表中＆＃34;照片＆＃34;：

select 
    (select GETDATE()) as Date,
    (select (ROUND(sum(QuantityInStore * AveragePrice), 2) as Photo
            from inventoryinfo, InventoryStoreInfo
            WHERE InventoryCategoryID
            IN ('3','6','19','22','23','40','32','56','52','41')
        ) as photo )

你真正的问题是你无缘无故地创建子表。删除额外的选择，跟踪每个标签所指的内容会更容易：

select 
    GETDATE() as Date,
    ROUND(sum(QuantityInStore * AveragePrice), 2) as Photo
            from inventoryinfo, InventoryStoreInfo
            WHERE InventoryCategoryID
            IN ('3','6','19','22','23','40','32','56','52','41')

Answer 5

尝试这种方式......这是测试代码，适用于sql server 2008

select 
(select GETDATE()) as 'Date',
(select b.tp) as 'Price'
from 
      ProductInfo a, 
      product_detail b

      where b.tp in (2,3,4 )

Answer 6

看起来你已将别名放在错误的位置，查看你已经开始的大括号以及它将在哪里完成。

select 
(select GETDATE()) as Date,
(select ROUND(sum(QuantityInStore * AveragePrice),2)
from 
      inventoryinfo, InventoryStoreInfo 
WHERE 
      InventoryCategoryID IN 
      ('3','6','19','22','23','40','32','56','52','41')) as Photo

SQL查询中的列名称

6 个答案: