Using INSERT INTO with 'SELECT' to supply some values but not others (Access 2010)

Question

I have two tables that look like this:

(\'MASTER_EOD\' TABLE)
ID  SHA1_HEX    ROLE
----------------------------
1   ff34bb03    2
2   eef0a005    1



(\'ROL         


        

Answer 1

You can substitute a DLookup expression for your SELECT role_num ... query.

SELECT role_num FROM role_index WHERE role_name='Follow Up'
DLookup("role_num", "role_index", "role_name='Follow Up'")

Use that DLookup in your INSERT.

INSERT INTO master_eod
    (
        sha1_hex,
        [role]
    )
VALUES
    (
        'ef03ff03',
        DLookup("role_num", "role_index", "role_name='Follow Up'")
    );

I enclosed role in square brackets because it is a reserved word.

Answer 2

Try doing it in the most standard way in SQL, by using the SELECT as the whole source in the INSERT instead of just a single column sub-query:

INSERT INTO master_eod ( sha1_hex, role )
SELECT 'ef03ff03', role_num FROM role_index WHERE role_name='Follow Up' ;

Note that you must ensure that such a query (the SELECT alone) returns just a single row, otherwise you would end up inserting many rows at once in a single go, one for each role_num found (which may or may not be desirable).