Question

I have two tables, I’ll call TableA and TableB

TableA:

StartNumber EndNumber Country

1           10        USA
11          20        USA
21          30        Canada
31          40        France
41          50        France
51          60        Germany

TableB:

SomeNumber
5
15
55
22
35
46
49

For each number in TableB, I want to find the corresponding row in TableA where the number is between the StartNumber and EndNumber and return the name of the country. I then want to group these results on the country column and return the number of times each country appears. So the results would look like this:

Country Occurrences
USA     2
Germany 1
Canada  1
France  3

Not sure how to do this.

Answer 1

Here the query.

Select A.Country, count(*) as Occurrences
from 
 tableA A
    inner join
 tableB B
    on B.someNumber between a.startnumber and b.endnumber
group by A.country