Question

我已经被困在一个问题上超过两天了，虽然它看起来非常简单（我确定它是）我似乎无法得到它。

我有一个用于报告的查询，我有3个参数。其中2个我输入一个字符串，那很好。虽然是服务器名称的最后一个参数，但我想列出所有可用的或仅列出我输入的那个。

我已经尝试在我的选择中使用CASE，在WHERE子句和许多其他事情中没有运气实现我想要的东西。

以下是我试图展示我所拥有的最后一次尝试。

SELECT DISTINCT    
       c1.BlockSize, c1.BootVolume, c1.Compressed, c1.SystemName, c1.Label,   c1.Caption, c1.PageFilePresent,
       [dbo].[CCS_DIGITAL_STORAGE_CONVERTER]('B', 'GB', c1.Capacity) AS Capacity,
       [dbo].[CCS_DIGITAL_STORAGE_CONVERTER]('B', 'GB', c1.FreeSpace) AS [Free Space], 
       [dbo].[CCS_DIGITAL_STORAGE_CONVERTER]('B', 'GB', c1.Capacity - c1.FreeSpace) AS [Used Space],
       100 * c1.FreeSpace / c1.Capacity AS [Free Space %],
       [CLE_ENV_SHORT], [CLE_ENV_CAT_SHORT]

FROM       CCS_Win32_Volume c1

JOIN       [dbo].[CCS_V_SERVER_INSTANCE_DETAILS] c2 on c1.SystemName =  c2.CSL_SERVER_NAME

WHERE      (@p_ServerName = c1.SystemName OR c1.SystemName = c1.SystemName) 
 AND   (c2.[CLE_ENV_SHORT] = @p_Env OR @p_Env = 'all')
 AND   (c2.[CLE_ENV_CAT_SHORT] = @p_EnvCat OR @p_EnvCat = 'all')

ORDER BY   c2.[CLE_ENV_CAT_SHORT], c2.[CLE_ENV_SHORT]

所以基本上我希望能够使用@p_ServerName参数查看所有SystemName或特定的SystemName ...任何人都知道如何做到这一点？或者我的尝试出了什么问题？我试过的CASE与WHERE子句中的条件基本相同，只使用了CASE语法。

所有的帮助都非常感谢，因为我已经被困在这几天了...... 干杯！

编辑：这是我尝试过的其他内容，在Management Studio中它运行得很好，但它没有SSRS ...忽略DECLARE，它在管理工作室进行测试......

DECLARE    @p_ServerName nvarchar(10) = 'all'
DECLARE    @p_Env        nvarchar(10) = 'all'
DECLARE    @p_EnvCat     nvarchar(10) = 'all'

SELECT DISTINCT    
           c1.SystemName, c1.BlockSize, c1.BootVolume, c1.Compressed, c1.Label, c1.Caption, c1.PageFilePresent,
           [dbo].[CCS_DIGITAL_STORAGE_CONVERTER]('B', 'GB', c1.Capacity) AS Capacity,
           [dbo].[CCS_DIGITAL_STORAGE_CONVERTER]('B', 'GB', c1.FreeSpace) AS [Free Space], 
           [dbo].[CCS_DIGITAL_STORAGE_CONVERTER]('B', 'GB', c1.Capacity - c1.FreeSpace) AS [Used Space],
           100 * c1.FreeSpace / c1.Capacity AS [Free Space %],
           [CLE_ENV_SHORT], [CLE_ENV_CAT_SHORT]

FROM       CCS_Win32_Volume c1

JOIN       [dbo].[CCS_V_SERVER_INSTANCE_DETAILS] c2 on c1.SystemName = c2.CSL_SERVER_NAME

WHERE      --(@p_ServerName = c1.SystemName OR c1.SystemName = c1.SystemName) 
     c1.SystemName = 
     CASE
     WHEN @p_ServerName = 'all' THEN c1.SystemName
     WHEN @p_ServerName != 'all' THEN @p_ServerName
     END

     AND   (c2.[CLE_ENV_SHORT] = @p_Env OR @p_Env = 'all')
     AND   (c2.[CLE_ENV_CAT_SHORT] = @p_EnvCat OR @p_EnvCat = 'all')

ORDER BY   c2.[CLE_ENV_CAT_SHORT], c2.[CLE_ENV_SHORT]

我想再次强调一点，在管理工作室中，它工作得很好，只有在ssrs才会遇到问题。

Answer 1

好吧，让我们试着暴力吧：

SELECT DISTINCT    
       c1.SystemName, c1.BlockSize, c1.BootVolume, c1.Compressed, c1.Label, c1.Caption, c1.PageFilePresent,
       [dbo].[CCS_DIGITAL_STORAGE_CONVERTER]('B', 'GB', c1.Capacity) AS Capacity,
       [dbo].[CCS_DIGITAL_STORAGE_CONVERTER]('B', 'GB', c1.FreeSpace) AS [Free Space], 
       [dbo].[CCS_DIGITAL_STORAGE_CONVERTER]('B', 'GB', c1.Capacity - c1.FreeSpace) AS [Used Space],
       100 * c1.FreeSpace / c1.Capacity AS [Free Space %],
       [CLE_ENV_SHORT], [CLE_ENV_CAT_SHORT]
FROM       CCS_Win32_Volume c1
JOIN       [dbo].[CCS_V_SERVER_INSTANCE_DETAILS] c2 on c1.SystemName = c2.CSL_SERVER_NAME
WHERE      c1.SystemName = @p_ServerName
     AND   (c2.[CLE_ENV_SHORT] = @p_Env OR @p_Env = 'all')
     AND   (c2.[CLE_ENV_CAT_SHORT] = @p_EnvCat OR @p_EnvCat = 'all')

UNION

SELECT DISTINCT    
       c1.SystemName, c1.BlockSize, c1.BootVolume, c1.Compressed, c1.Label, c1.Caption, c1.PageFilePresent,
       [dbo].[CCS_DIGITAL_STORAGE_CONVERTER]('B', 'GB', c1.Capacity) AS Capacity,
       [dbo].[CCS_DIGITAL_STORAGE_CONVERTER]('B', 'GB', c1.FreeSpace) AS [Free Space], 
       [dbo].[CCS_DIGITAL_STORAGE_CONVERTER]('B', 'GB', c1.Capacity - c1.FreeSpace) AS [Used Space],
       100 * c1.FreeSpace / c1.Capacity AS [Free Space %],
       [CLE_ENV_SHORT], [CLE_ENV_CAT_SHORT]
FROM       CCS_Win32_Volume c1
JOIN       [dbo].[CCS_V_SERVER_INSTANCE_DETAILS] c2 on c1.SystemName = c2.CSL_SERVER_NAME
WHERE      @p_ServerName = 'all'
     AND   (c2.[CLE_ENV_SHORT] = @p_Env OR @p_Env = 'all')
     AND   (c2.[CLE_ENV_CAT_SHORT] = @p_EnvCat OR @p_EnvCat = 'all')

ORDER BY   c2.[CLE_ENV_CAT_SHORT], c2.[CLE_ENV_SHORT]

在SSRS中显示全部或一个参数

1 个答案: