如何显示每位经理下的所有员工 [英] How to display all employees under each manager

问题描述

I have a 2 tables:
Mrg: 
UserID || UserID_Mrg || Status
and 
User:
UserID || Name 
I want to display all employees (UserID) under each Manager (UserID_Mrg)
example:
UserID_Mrg = 12
So display all UserID with UserID_Mrg = 12
so far I could just display the users Information an their Manager:

我尝试过：

What I have tried:

<pre lang="c#">private void BindGridView()
    {
        using (SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["conn"].ConnectionString))
        using (SqlDataAdapter adapter = new SqlDataAdapter(@"
SELECT tbl_user.Name, tbl_mrg.UserID_Mrg FROM   tbl_mrg 
INNER JOIN tbl_user ON tbl_mrg.UserID = tbl_user.UserID 
WHERE  ((tbl_mag.user_ID = @UserID))
ORDER BY     tbl_user.Name", con))
        {
            adapter.SelectCommand.Parameters.Add(new SqlParameter("@UserID", SessionHelper.UserID));
            adapter.Fill(Data2);
            GridView2.DataSource = Data2;
            GridView2.DataBind();
        }
    }

<asp:GridView ID="GridView2" runat="server">
                <Columns>      
<asp:BoundField DataField="Name" HeaderText="Name" SortExpression="Name" />
<asp:BoundField DataField="Mrg" HeaderText="Manager" SortExpression="Manager" />

                </Columns>
            </asp:GridView>

推荐答案

假设@userID是经理ID，这个

Assuming @userID is the manager id, this

tbl_mgr.user_ID = @UserID

应为

tbl_mgr.UserID_Mrg = @UserID

，例如

such as

select u.userid, u.name from user u join mrg m on u.userid=m.userid where userid_mrg = 12

根据你的问题你想要的查看经理的所有用户。

因此条件应该通过 userid_mrg 而不是 userid ，查询将是。



SELECT

tbl_user.Name

，tbl_mrg.UserID_Mrg

FROM tbl_mrg

INNER JOIN tbl_user

ON tbl_mrg.UserID = tbl_user.UserID

WHERE tbl_mrg.UserID_Mrg = @managerid//这里@ managerid = 12你可以通过。

As per your question you want to see the all the users of a manager.
So the condition should be passed userid_mrg instead of userid and the query will be .

"SELECT
tbl_user.Name
,tbl_mrg.UserID_Mrg
FROM tbl_mrg
INNER JOIN tbl_user
ON tbl_mrg.UserID = tbl_user.UserID
WHERE tbl_mrg.UserID_Mrg = @managerid" // Here @managerid=12 you can pass.

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