query / sproc, SELECTING FROM a SELECT statement with JOINs


7Teams TABLE col ParentTeamID has multiple entries of same ParentTeamID
Contacts TABLE col ParentTeamID, FirstName, etc...

Current Solution below gives the correct result:

*a VIEW named vDistinctTeams
-FROM         dbo.[7Teams]

SELECT     dbo.vDistinctTeams.ParentTeamID, dbo.Contacts.FirstName
FROM         dbo.vDistinctTeams LEFT OUTER JOIN
                      dbo.Contacts ON dbo.vDistinctTeams.ParentTeamID = dbo.Contacts.ContactID

*the above yields 1 row for each unique ParentTeamID in  the 7Teams Table  and its Name (and any other fields I need) from the Contacts Table

PROBLEM:  I need to do this in 1 Query (Sproc)  (I am new to db) like below...

SELECT ParentID, FirstName, etc
              FROM 7Teams   ??JOIN??   Contacts

Thanks in advance!
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Walter RitzelSenior Software EngineerCommented:
In theory, that should do:
SELECT     distinct dbo.7Teams.ParentTeamID, dbo.Contacts.FirstName
FROM         dbo.7Teams LEFT OUTER JOIN
                      dbo.Contacts ON dbo.7Teams.ParentTeamID = dbo.Contacts.ContactID

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or this:
SELECT     a.ParentTeamID, dbo.Contacts.FirstName
FROM         (SELECT DISTINCT ParentTeamID FROM dbo.[7Teams])  a LEFT OUTER JOIN
                      dbo.Contacts ON a.ParentTeamID = dbo.Contacts.ContactID

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Vitor MontalvãoMSSQL Senior EngineerCommented:
Why do you even need to join with 7Teams table?
You have all information in the Contacts table.
SELECT ContactID, FirstName
FROM dbo.Contacts

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Or do you need any particular field from 7Teams table?
SamCashAuthor Commented:
Great, the second was used effectively, thanks for the simplified answer!
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Query Syntax

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