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Make a query to Select data from Two Tables

Board                     Reply
----------------         ---------------------
BoardID (PK)         ReplyID (PK)
Subject                  BoardID (FK)

Let say I have these two tables. What I need is to collect all the data based on Board Table. The problem is that on Reply Table, there are many reply data with one boardID and I need to seperate the RegisterDate based on StatusTypeID. So if StatusTypeID='12' then it will be AssignDate, and if StatusTypeID='13' then it will be Contaced Date....etc.
Bottom is what the result will be like:

BoardID   Subject   AssignDate              Contacted Date            SignedDate
1              test          03/01/2008             03/03/2008                    03/05/2008
2              hello        03/01/2008              Null                                Null
3              hi             03/01/2008              03/02/2008                     03/12/2008

Below is what I done so far and the result came out to be wrong:

Select B.BoardID,Subject,RegisterDate, ass.RegisterDate as 'Assigned Date', con.ReigsterDate as 'Contaced Date', sig,RegisterDate as 'Signed Date'
From Board B
Left Join Reply R On R.BoardID=B.BoardID
Left Join Reply ass On StatusTypeID='12'
Left Join Reply con On con.StatusTypeID='13'
Left Join Reply sig On sig.StatusTypeID='14'

1 Solution
Brendt HessSenior DBACommented:
You were close, though.  Try this modification:

      ass.RegisterDate as 'Assigned Date',
      con.ReigsterDate as 'Contacted Date',
      sig,RegisterDate as 'Signed Date'
From Board B
Left Join Reply ass
      On ass.StatusTypeID='12'
      AND ass.BoardID=B.BoardID
Left Join Reply con
      On con.StatusTypeID='13'
      AND con.BoardID=B.BoardID
Left Join Reply sig
      On sig.StatusTypeID='14'
      AND sig.BoardID=B.BoardID
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