Question

I’ve got the following tables:

Table1 {ArticleNo (int), ArtDescription (string) }

Table2 { ArticleNo (int), Year (date) }

Table1.ArticleNo is a primary key.
Table2.ArticleNo is a foreign key referenced to table1.ArticleNo

It’s difficult to explain what I want to query, so here a short example:

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Table1

(1,Desk)
(2,Chair)
(3,Ruler)

Table2

(1,2000)
(1,2000)
(2,2001)

The query should return:

1 Desk 2001
2 Chair 2000
3 Ruler 2000
3 Ruler 2001

All articles which are not sold (or whatever) in all years (all years from table2).

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I hope you understand my example – the query seems to be very complex. Here my approach to a solution:

SELECT table1.ArticleNo,table1.ArtDescription,table2.Year
FROM table1
JOIN table2
ON table1.ArticleNo=table2.ArticleNo
WHERE NOT table1.ArticleNo IN (SELECT table2.Year FROM table2);

I tried lots of different things.. I hope you can help me!

Answer 1

SELECT  t1.*, t2.year
FROM    t1
CROSS JOIN
        (
        SELECT  DISTINCT year
        FROM    t2
        ) t2
WHERE   (t1.id, t2.year) NOT IN
        (
        SELECT  t2.id, t2.year
        FROM    t2
        )

Create an index on t2 (year, id) (in this order) for the query to work fast.