WITH q AS
(
SELECT *,
ROW_NUMBER() OVER (PARTITION BY dbo.[1_MAIN - Contacts].Contact_ID ORDER BY dbo.[1_MAIN - Contacts].Contact_ID) AS rn
FROM dbo.[1_MAIN - Contacts]
INNER JOIN
dbo.Referral
ON dbo.[1_MAIN - Contacts].Contact_ID = dbo.Referral.Referral_ID
INNER JOIN
dbo.prov_training_records
ON dbo.[1_MAIN - Contacts].Contact_ID = dbo.prov_training_records.Contact_ID
LEFT OUTER JOIN
dbo.Resource_Center
ON dbo.[1_MAIN - Contacts].Contact_ID = dbo.Resource_Center.Contact_ID
FULL OUTER JOIN
dbo.Providers
ON dbo.[1_MAIN - Contacts].Contact_ID = dbo.Providers.Contact_ID
)
SELECT *
FROM q
WHERE rn = 1