Trying to update 2 tables using right join (UPDATE Registrations RIGHT JOIN Registrations2)

Question

I am trying to update [01-POs] from [01-POs1]
They both have the same fields and both have a primary field of [PO Number]
The code below does not work:
Update [01-POs] right join [01-POs1]
On Registrations.[01-POs].[PO Number] = [01-POs].[PO Number]
SET Registrations.TEXT_REGISTRANT_ID = Registrations2.TEXT_REGISTRANT_ID,Registrations.[Name] = Registrations2.[Name]
REF:  https://social.msdn.microsoft.com/Forums/office/en-US/bea031e1-46cc-41b7-a8de-8c897c52019d/update-registrations-right-join-registrations2?forum=accessdev

Answer 1

That is the problem, I don't understand this code at all, but I know what I hope it will do.
I have one table that pulls from an oracle database the way I want it, then uploads to the live database.  At this time I delete all records from the main table, then import all new records (10,000+ each time).  This causes my database to grow
in size very quickly (I have 7 of these type of tables).  My hope is that this will update the existing records, and append the new ones.  Bonus would be if it will delete the ones that are no longer valid (no longer on the oracle pull).
[01-POs] is the main table that I want to pull from
[01-POs1] is the live table, that I want to sync to [01-POs]
[PO Number] is the key field (not auto number)
The rest of the fields are all the same and need to be updated
I hope this explanation helps.
Note:  Registrations and Registrations2 are from the original code that I didn't know how I should change.