Question

I have the following table A:

Cell1 Time1
a1    t1
a1    t2

And another table B:

Cell2 Time2 SomeColumn2
a1    t1    c1
a1    t3    c2

I want values from table B where (Cell2,Time2) combination is not in Table A as (Cell1,Time1).

e.g in the given case the output would be :

Cell2 Time2 SomeColumn2
a1    t3    c2

What would be the solution in TSQL or ms-access sql ?

Answer 1

SELECT b.*
FROM TableB b
LEFT JOIN TableA a ON b.Cell2=a.Cell1 AND b.Time2=A.Time1
WHERE a.Cell1 IS NULL