Select unique records (members per household) in access

I need to select unique records from a table in access.  Setup first.

My table design is as follows - all text fields.

Transaction Name
Household Name
First Name
Last Name
Mailing Street
Mailing City
Mailing State/Province
Mailing Zip/Postal Code

I need to get only one full mailing address (First Name, Last Name, Mailing Street, Mailing City, Mailing State/Province, Mailing Zip/Postal Code) per distinct Household Name.

Can I do this with a subquery?
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Vitor MontalvãoMSSQL Senior EngineerCommented:
What is the primary key for that table?
mattturleyAuthor Commented:
mattturleyAuthor Commented:
I could make it transaction name.
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Vitor MontalvãoMSSQL Senior EngineerCommented:
Should be a column that can identify an unique record.
Vitor MontalvãoMSSQL Senior EngineerCommented:
Assuming Transaction Name as PK this can be a solution:
SELECT T1.FirstName, T1.LastName, T1.MailingStreet, T1.MailingCity, T1.MailingState, T1.MailingZip
FROM YourTableNameHere T1
WHERE T1.TransactionName = (SELECT TOP 1 T2.TransactionName 
                                                    FROM YourTableNameHere T2
                                                     WHERE T2.MailingStreet=T1.MailingStreet
                                                          AND T2.MailingCity=T1.MailingCity
                                                          AND T2.MailingState=T1.MailingState
                                                          AND T2.MailingZip=T1.MailingZip)

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mattturleyAuthor Commented:
I'm a little confused - are you creating a table or aliasing part of the query as a table?
Helen FeddemaCommented:
It would be better to have a separate Households table, with a HouseholdID key field.  Then put that key into the Persons table, as a foreign key.  The address fields should be in tblHouseholds, which would have one record per household.  Though you might run into problems with divorced couples, where a child could be moving between two households in a joint custody arrangement.
Helen FeddemaCommented:
Having the address repeated for each person means that if there is a change of address, you will have to go into each person's record and change the address; if they are in a Households table, you only need to change it once.

What is a transaction?  Depending on the answer to that question, you might need yet another table.
mattturleyAuthor Commented:
While I appreciate the best practice on table structure, naming, field names, etc., I am just working with what was given to me.  Would prefer a solution that keeps the query going against the single table, as identified in the question.
Vitor MontalvãoMSSQL Senior EngineerCommented:
No new tables. Only aliases since the query works with the same table twice, so you need to provide alias for the engine know to each one are you referring to.
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