如何使用变量过滤视图中的日期？

Question

这里的查询很好..

 SELECT M.id, 
       M.accnt, 
       amount = M.amount + Isnull(s.supply, 0), 
       issued = Isnull(I.issued, 0) 
FROM   maintbl M 
       LEFT OUTER JOIN (SELECT id, 
                               Sum(supply) AS supply 
                        FROM   supplytbl 
                        WHERE  Month(dates) = 1  -- Month filter for Jan - feb Month(dates) in (1,2)
                        GROUP  BY id) S 
                    ON s.id = M.id 
       LEFT OUTER JOIN (SELECT id, 
                               Sum(issued) AS issued 
                        FROM   issuedtbl 
                        WHERE  Month(dateissue) = 1 -- Month filter
                        GROUP  BY id) I 
                    ON I.id = M.id 

但是如何在视图中执行此操作？...使用变量过滤日期？喜欢

WHERE  Month(dateissue) = textbox1.text

或者有没有办法在视图中进行这样的查询？很高兴有任何帮助.. :)

Answer 1

如果您使用的是 SQL Server，则无法将参数传递给视图

所以，你需要像这样创建存储过程

CREATE PROCEDURE testSP
(
    @issue_month INT
) 
AS 
BEGIN
   ...
END

Answer 2

CREATE PROCEDURE monthsearch
@date datetime2
AS
BEGIN
SELECT * FROM <queryname> WHERE <field date>=@date    
END;

调用它： 执行月份搜索日期时间

Answer 3

存储过程是回答您问题的最佳方式。

这是代码

CREATE PROCEDURE usp_sample @Month_date_issue int
AS
SELECT M.id, 
       M.accnt, 
       amount = M.amount + Isnull(s.supply, 0), 
       issued = Isnull(I.issued, 0) 
FROM   maintbl M 
       LEFT OUTER JOIN (SELECT id, 
                               Sum(supply) AS supply 
                        FROM   supplytbl 
                        WHERE  Month(dates) = 1  -- Month filter for Jan - feb Month(dates) in (1,2)
                        GROUP  BY id) S 
                    ON s.id = M.id 
       LEFT OUTER JOIN (SELECT id, 
                               Sum(issued) AS issued 
                        FROM   issuedtbl 
                        WHERE  Month(dateissue) = @Month_date_issue -- Month filter
                        GROUP  BY id) I 
                    ON I.id = M.id 
GO

这里要调用存储过程

using (SqlCommand cmd = new SqlCommand("usp_sample", con)) {
      cmd.CommandType = CommandType.StoredProcedure;

      cmd.Parameters.Add("@Month_date_issue ", SqlDbType.Int32).Value = Int32.Parse(textbox1.text);

      con.Open();
      cmd.ExecuteNonQuery();
    }