Question

I have a consumer table which has the columns – Email, AccountState and DateCreated

AccountState can have the values 1 (active), 2 (inactive) and 3 (archived)

A specific consumer can have multiple rows consisting of the account state’s above.

What I am trying to do is construct a query which returns the following

A. A list of consumer records for each consumer (using email address)

B. Only the records which aren’t the most recent (so if a specific email address has 3 records, 1 for each state, it would return the 2 which aren’t the most recent)

Then once I have this list I want to set all these states to 3 as they need to be archived.

So for the example data shown here

Only rows 13 – 16 would be returned.

I have tried to do this using the query below but it isn’t working.

SELECT                  con.Email,
                        con.Id, 
                        con.DateCreated                 AS DateRegistered,
                        con.DateLastActivity,
                        con.hasiPhone,
                        con.hasAndroid,
                        con.hasSMS,
                        con.CurrencyCode                AS Currency,
                        con.AccountState


        FROM            Consumer                        con

        WHERE           con.AccountState                <> 1
        AND             DateCreated     =(  SELECT  MAX(DateCreated)
                            FROM    Consumer                        con_most_recent
                            WHERE   con_most_recent.AccountState    <> 1
                            AND     con_most_recent.Id              = con.Id)

        order by Email asc

Answer 1

;WITH x AS 
(
  SELECT rn = ROW_NUMBER() OVER (PARTITION BY EMail ORDER BY DateCreated DESC),
    Email, Id, DateCreated AS DateRegistered --, ... other columns
  FROM dbo.Consumer
  WHERE AccountState <> 1
)
SELECT Email, Id, DateRegistered --, ... other columns
FROM x
WHERE rn > 1
ORDER BY Email;

EDIT changing state for these rows

;WITH x AS 
(
  SELECT rn = ROW_NUMBER() OVER (PARTITION BY EMail ORDER BY DateCreated DESC),
    Email, Id, DateCreated AS DateRegistered --, ... other columns
  FROM dbo.Consumer
  WHERE AccountState <> 1
)
UPDATE x 
SET AccountState = 3
WHERE rn > 1;