Upserting in MS-access

Question

I need to write an SQL query for MS-Access 2000 so that a row is updated if it exists, but inserted if it does not. (I believe this is called an \"upsert\")

i.e.

Answer 1

You can simulate an upsert in an Access by using an UPDATE query with a LEFT JOIN.

update b
left join a on b.id=a.id
set a.f1=b.f1
, a.f2=b.f2
, a.f3=b.f3

see: https://www.experts-exchange.com/questions/28713136/Can-I-use-the-SQL-MERGE-statement-in-a-query-in-Access-2010.html