使用 sql 中的连接计算查询

Question

我尝试在 SQL 中创建计数查询，并尝试在任何用户在 asp.net 中上传新文档时向主管、经理和主管显示通知

查询

ALTER procedure [dbo].[countdocuments]
   @DepID int
as
    SELECT 
       COUNT(*),
       Designation.DesigID
    FROM DocumentInfo
    INNER JOIN dbo.Userss ON dbo.Userss.DesigID = dbo.Designation.DesigID
    WHERE 
       Userss.DesigID = 'Finance'

但是当我执行它时，出现以下错误

消息 4104，级别 16，状态 1，过程计数文档，第 7 行
无法绑定多部分标识符“dbo.Designation.DesigID”。
消息 4104，级别 16，状态 1，过程计数文档，第 5 行
无法绑定多部分标识符“Designation.DesigID”。

好的，这是我的designation 表

DesigID   DesigType
  1       SuperVisor
  2       Manager
  3       Director
  4       BasicUsers

这是documentinfo 表

DocID  DocDescrit  DocName UploadedDate Uploadfile DocTypeID DepID ApproveID UploadedBy UserID
32  asp.net codescomputer 2013-12-30 22:30:00.623    details.docx   1   2   1amna   24

这是userss 表

UserID UserName Password UserTypeID DepID CreateDate Email PhoeNumber DesigID
21  john    abc 2   NULL    NULL    2013-12-02 22:01:03.903 NULL    abc@hotmail.com 12313   4

当我尝试这个查询时

ALTER procedure [dbo].[countdocuments]
    @DepID int
as
BEGIN
    SET NOCOUNT ON;

    SELECT 
        COUNT(*) AS Cnt, Designation.DesigID
    FROM 
        Designation 
    INNER JOIN 
        dbo.Userss ON dbo.Userss.DesigID = dbo.Designation.DesigID
    WHERE 
        Userss.DesigID = @DepID
    GROUP BY 
        Designation.DesigID
END

当我尝试像 @depid = 4 一样执行时，这显示我这样，我不明白 4 来自哪里..

Cnt  DesigID
 4     4

Answer 1

ALTER procedure [dbo].[countdocuments]
@DepID int
as
BEGIN
  SET NOCOUNT ON;
    SELECT COUNT(*) AS Cnt,Designation.DesigID
    FROM DocumentInfo inner join dbo.Userss 
    on dbo.Userss.DesigID = dbo.DocumentInfo.DesigID
    WHERE Userss.DesigID = @DepID
    GROUP BY DocumentInfo.DesigID

END

JOIN 子句和 ON 子句中有不同的表名。假设您的 DocumentInfo 表中有 DesigID 列，我已尝试修复它。

Answer 2

查看您的评论尝试关注

ALTER procedure [dbo].[countdocuments]
@DepID int
as
BEGIN
SET NOCOUNT ON;
SELECT COUNT(*) AS Cnt,Designation.DesigID
FROM Designation left join dbo.Userss 
on dbo.Userss.DesigID = dbo.Designation.DesigID
left Join DocumentInfo on Userss.UserId= DocumentInfo.UserId and Designation.DepId = DocumentInfo.DepId
WHERE Userss.DesigID = @DepID
GROUP BY Designation.DesigID

END

或者试试下面

Looking at your comment try following

ALTER procedure [dbo].[countdocuments]
@DepID int
as
BEGIN
SET NOCOUNT ON;
SELECT COUNT(*) AS Cnt,Designation.DesigID
FROM DocumentInfo  left Join Userss on DocumentInfo.UserId = Userss.UserId
left Join Designation on DocumentInfo.DepId = Designation.DeptId
and Designation.DesigID = Userss.DesigId
WHERE Userss.DesigID = @DepID
GROUP BY Designation.DesigID

END