Question

I am creating a stored procedure where I would like to bring back just the first record from each match up instead every record that matches.

I have written the following code so far:

SELECT
    Tenant.FirstNames AS LeadTenantFirstName, Tenant.LastNames AS LeadTenantLastNames,
    Deposit.CertificateNumber AS DPCNumber

    FROM tblMemberPropertyDepositTenantHistory AS Tenant
    INNER JOIN tblMemberPropertyDeposits AS Deposit 
    ON Tenant.MemberPropertyDepositID = Deposit.MemberPropertyDepositID

The problem is that it will bring back a record for every tenant in the query for a certificate, but I would like to bring back just the first tenant created for each certificate?

Any ideas?

Answer 1

If I understand you right you need something like this:

;WITH CTE AS
(
    SELECT
        ROW_NUMBER() OVER(PARTITION BY Tenant.MemberPropertyDepositID ORDER BY Tenant.MemberPropertyDepositID) AS RowNbr,
        Tenant.MemberPropertyDepositID,
        Tenant.FirstNames,
        Tenant.LastNames
    FROM
        tblMemberPropertyDepositTenantHistory AS Tenant
)
SELECT
    Tenant.FirstNames AS LeadTenantFirstName, 
    Tenant.LastNames AS LeadTenantLastNames,
    Deposit.CertificateNumber AS DPCNumber
FROM 
    tblMemberPropertyDeposits AS Deposit 
    LEFT JOIN CTE AS Tenant
        ON Tenant.MemberPropertyDepositID=Deposit.MemberPropertyDepositID
        AND Tenant.RowNbr=1