Question

我在SQL Server 2008中运行以下查询，该查询将在01/01/2014之后返回数据项。

如何更改查询以提示执行日期范围，以便我可以在特定日期之间返回数据？我最终希望将其创建为数据库视图并通过MS Excel运行查询。

SELECT  J_CODATE as Typed_Date,
        J_CRDATE as Created_Date,
        J_AUTHOR as Author_Id,
        CAST(A_FNAME + ' ' + A_SURNAME AS NVARCHAR) AS Author_Name,
        J_JNUMBER as Job_Number,
        J_SRSTATUS as SR_Status,
        J_LENGTH as Job_Length,
        J_TRANTIME as Typing_Time,
        J_TRANS as Typist_id,
        CAST(T_FNAME + ' ' + T_SURNAME AS NVARCHAR) AS Typist_Name,
        CAST(J_TRANTIME AS FLOAT) / CAST(Job.J_LENGTH AS FLOAT) AS Productivity_Factor
  FROM  author, job, trans
  WHERE J_CODATE >= '2014-01-01 00:00:00'
        and J_LENGTH > 0 and J_TRANTIME > 1 and J_SRSTATUS > 0
        and (Cast(J_LENGTH as Float) / Cast(J_TRANTIME as Float)) < 2
        and (Cast(J_TRANTIME as Float) / Cast(J_LENGTH as Float)) < 20
        and Job.J_TRANS = Trans.T_ID
        and Job.J_AUTHOR = author.A_ID
  ORDER BY J_CODATE desc

由于

Answer 1

那么您的目标是通过Excel访问数据库数据，并让Excel提示您输入参数？

无法将构建到查询中提示您输入参数的功能。提示出现在哪里 - 在服务器的屏幕上？如果执行查询的程序是Windows服务或其他没有UI的进程，会发生什么？

您可以在MS Access中执行此操作，因为Access既是数据库又是用于操作该数据库的UI。但即使在Access中，如果Access可执行文件以外的应用程序试图使用数据库，则不会在该程序中提示参数：如果参数不是，则只会出现异常在程序尝试执行查询时提供。

所以这至少是Excel问题的一半。我不确定Excel的数据工具是否包含提示您输入参数的功能，尽管我希望它可以。但你必须对此进行研究。

要解决问题的SQL Server部分：参数化查询的最简单方法可能是创建一个存储过程，Excel将通过其数据工具为您执行。它看起来像这样：

CREATE PROCEDURE dbo.TestProcedure ( @StartDate datetime, @EndDate datetime ) AS SELECT J_CODATE as Typed_Date, J_CRDATE as Created_Date, J_AUTHOR as Author_Id, CAST(A_FNAME + ' ' + A_SURNAME AS NVARCHAR) AS Author_Name, J_JNUMBER as Job_Number, J_SRSTATUS as SR_Status, J_LENGTH as Job_Length, J_TRANTIME as Typing_Time, J_TRANS as Typist_id, CAST(T_FNAME + ' ' + T_SURNAME AS NVARCHAR) AS Typist_Name, CAST(J_TRANTIME AS FLOAT) / CAST(Job.J_LENGTH AS FLOAT) AS Productivity_Factor FROM author, job, trans WHERE J_CODATE BETWEEN @StartDate and @EndDate and J_LENGTH > 0 and J_TRANTIME > 1 and J_SRSTATUS > 0 and (Cast(J_LENGTH as Float) / Cast(J_TRANTIME as Float)) < 2 and (Cast(J_TRANTIME as Float) / Cast(J_LENGTH as Float)) < 20 and Job.J_TRANS = Trans.T_ID and Job.J_AUTHOR = author.A_ID ORDER BY J_CODATE desc

如果它看起来很像你的查询，那是因为它是：除了将它包装在存储过程中之外，我将你使用的日期文字转换为参数@StartDate和@EndDate，因为你说你想要一个日期范围。

执行时的SQL Server日期范围选择

1 个答案: