sql ms access select by date and genre - ms-access

Question

I have two tables:
fID Enamn Fnamn bdate
1 Ronge Paus 49-05-14
2 Nesser Håk 50-07-26
3 Bods Thomas 51-05-02
And
ISBN cathegory
123 Prosa
456 Poesi
789 Thriller
I am trying to select by date and cathegory. The writer shoult be born before year "1950" and the cathegory should be "Poesi"
The result should be:
ISBN cathegory fID Enamn Fnamn bdate
456 poesi 1 Ronge Paus 49-05-14
I have tried the followin:
SELECT *
FROM bok, författare
WHERE bdate BETWEEN #01/01/40# AND #01/01/50# AND kategori = 'poesi'
But it didn't work :(

Answer 1

You need a method to match a record from the first table to it's category in the second table. I assumed ISBN is the primary key in the second table, so used it as a foreign key in the first table.
I am unclear about the table names, so I substituted my own names. Notice I also assumed bdate is Date/Time data type. Here's what my versions of the tables look like:
tblA:
fID Enamn Fnamn bdate fkey_ISBN
1 Ronge Paus 49-05-14 456
2 Nesser Håk 50-07-26 123
3 Bods Thomas 51-05-02 789
tblB:
ISBN cathegory
123 Prosa
456 Poesi
789 Thriller
Then, to get writers born before year 1950 for cathegory "Poesi", use this query:
SELECT
a.fkey_ISBN,
b.cathegory,
a.fID,
a.Enamn,
a.Fnamn,
a.bdate
FROM
tblA AS a
INNER JOIN tblB AS b
ON a.fkey_ISBN = b.ISBN
WHERE
a.bdate < #1950/01/01#
AND b.kategori = 'poesi';
Edit: If ISBN is in fact the primary key of tblB, you may get better performance by using ISBN rather than kategori in your WHERE clause:
WHERE
a.bdate < #1950/01/01#
AND b.ISBN = 456
or if IBSN is text rather than numeric data type:
WHERE
a.bdate < #1950/01/01#
AND b.ISBN = '456'