How do I append non-matching records

[Omi]

I want to append records to tableB only when the key field in tableA does not
match the key field in tableB

 

[Jeff Boyce]

Omi

We're not there. We can't see your tables or relationships.

Are you saying that you have two tables with identical structure, and you're
adding to one table only if the record isn't already in another table? If
so, why?! In a well-normalized relational database, you usually don't
need/have multiple tables with the same structure.

More info, please...

Regards

Jeff Boyce
Microsoft Access MVP

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[Douglas J. Steele]

INSERT INTO TableB (ID, Field1, Field2, Field3)
SELECT ID, Field1, Field2, Field3
FROM TableA
WHERE TableA.ID NOT IN (SELECT DISTINCT ID FROM TableB)