Question

i have 2 tables in access

this is what i need:

1. if the PK from table1 exists in table2, then delete the entire record with that PK from table2 and add the entire record from table1 into table2
2. if the PK does not exist then add the record

i need help with both the sql statement and the VBA

i guess the VBA should be a loop, going through every record in table1. inside the loop i should have the select statement

Answer 1

I don’t think you need a VBA loop, just two SQL statements.

First delete the matching rows from table2.

DELETE 
FROM table2 AS m
WHERE pk IN (SELECT pk FROM table1);

Then append all the rows from table1 into table2.

INSERT INTO table2 (
    pk,
    field2,
    field3,
    field4)
SELECT
    i.pk,
    i.field2,
    i.field3,
    i.field4
FROM
    table1 AS i;