SQL Query加入

Question

我有一个名为tblIssueTicket的表 tblIssueTicket包含以下字段：TicketID，TicketRequesterID，ApprovalManagerID，RequestDate，ApprovalDate，TicketStatus

还有另一个名为tblEmployeeProfile的表。 tblEmployeeProfile包含字段EmployeeID，EmployeeFirstName，EmployeeLastName

我需要显示以下记录：

  

TicketID，TicketRequesterFullName，ApprovalManagerFullName，RequestDate，ApprovalDate，TicketStatus

我在查询查询以返回TicketRequester＆amp;的全名时遇到问题。 ApprovalManager字段的全名。

到目前为止，我的查询如下：

Select it.TicketID,
    ep.Firstname + ' ' + ep.EmployeeLastName AS TicketRequestorFullName,
    it.RequestDate, it.ApprovalDate, it.TicketStatus
FROM    tblIssueTicket it, tblEmployeeProfile ep
WHERE   ep.EmployeeID = it.TicketRequesterID

任何建议都会非常感激。

由于

CM

Answer 1

SELECT
  it.TicketID,    
  ep.Firstname + ' ' + ep.EmployeeLastName AS TicketRequestorFullName,    
  mp.Firstname + ' ' + mp.EmployeeLastName AS ApprovalManagerFullName,    
  it.RequestDate, 
  it.ApprovalDate, 
  it.TicketStatus
FROM    
  tblIssueTicket it
  INNER JOIN  tblEmployeeProfile ep ON ep.EmployeeID = it.TicketRequesterID
  INNER JOIN  tblEmployeeProfile mp ON mp.EmployeeID = it.ApprovalManagerID