Jointure de requête SQL

Question

J'ai une table appelée tblIssueTicket tblIssueTicket contient les champs: TicketID, TicketRequesterID, ApprovalManagerID, RequestDate, ApprovalDate, TicketStatus

Il existe une autre table appelée tblEmployeeProfile. Le fichier tblEmployeeProfile contient les champs EmployeeID, EmployeeFirstName, EmployeeLastName

.

Je dois afficher les enregistrements suivants:

  

TicketID, TicketRequesterFullName, ApprovalManagerFullName, RequestDate, ApprovalDate, TicketStatus

Je ne parviens pas à trouver le nom complet du TicketRequester & amp; nom complet des champs ApprovalManager.

Ma requête jusqu'à présent ressemble à ceci:

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

Tout conseil serait grandement apprécié.

Merci

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