Pagination and INNER JOIN - sql-server

Question

I have a situation which I need to do pagination along with INNET JOIN. Here is a similar scenario I have:
DECLARE #categories AS TABLE(
CatID INT,
CategoryName NVARCHAR(100)
);
DECLARE #fooTable AS TABLE(
ID INT,
CatID INT,
Name NVARCHAR(100),
MinAllow INT,
Price DECIMAL(18,2)
);
INSERT INTO #categories VALUES(1, 'Cat1');
INSERT INTO #categories VALUES(2, 'Cat2');
INSERT INTO #categories VALUES(3, 'Cat3');
INSERT INTO #categories VALUES(4, 'Cat4');
INSERT INTO #categories VALUES(5, 'Cat5');
INSERT INTO #fooTable VALUES(1, 1, 'Product1', 2, 112.2);
INSERT INTO #fooTable VALUES(3, 1, 'Product3', 5, 233.32);
INSERT INTO #fooTable VALUES(6, 1, 'Product6', 4, 12.43);
INSERT INTO #fooTable VALUES(7, 4, 'Product7', 4, 12.43);
INSERT INTO #fooTable VALUES(8, 5, 'Product8', 4, 12.43);
These are the records I have. As you can see, some categories do not have any products inside #fooTable. As a next step, we have the following SELECT statement:
SELECT * FROM #fooTable ft
INNER JOIN (
SELECT ROW_NUMBER() OVER (ORDER BY CatID) AS RowNum, * FROM #categories
) AS cat ON (cat.CatID = ft.CatID);
It is a basic JOIN except that the output will also carry the row number of the categories. The result I got for this query is as follows:
ID CatID Name MinAllow Price RowNum CatID CategoryName
---- ------- ------------- ----------- --------- -------- -------- -------------
1 1 Product1 2 112.20 1 1 Cat1
3 1 Product3 5 233.32 1 1 Cat1
6 1 Product6 4 12.43 1 1 Cat1
7 4 Product7 4 12.43 4 4 Cat4
8 5 Product8 4 12.43 5 5 Cat5
When you look at the RowNum column, you will see that those values are not pagination friendly. So, when I try to paginate this table as follows, I got an incorrect output:
SELECT * FROM #fooTable ft
INNER JOIN (
SELECT ROW_NUMBER() OVER (ORDER BY CatID) AS RowNum, * FROM #categories
)AS cat ON (cat.CatID = ft.CatID) AND (cat.RowNum BETWEEN 1 AND 2);
The real situation I have is similar to this one but that query is so complicated and I need to get it working with INNER JOIN. I hope I made it clear. Any idea how I got something like that working?
Edit
According to the above result of my first select query, I should be able to retrieve products whose CatID is 1 and 4 on my second query. That's what I aim.

Answer 1

One solution can be the next one:
SELECT x.*
FROM
(
SELECT ft.*,
cat.CategoryName,
DENSE_RANK() OVER (ORDER BY ft.CatID) AS Rnk
FROM #fooTable ft
INNER JOIN #categories cat ON (cat.CatID = ft.CatID)
) AS x
WHERE x.Rnk BETWEEN 1 AND 2
Results:
ID CatID Name MinAllow Price CategoryName Rnk
-- ----- -------- -------- ------- ------------ ---
1 1 Product1 2 112.20 Cat1 1
3 1 Product3 5 233.32 Cat1 1
6 1 Product6 4 12.43 Cat1 1
7 4 Product7 4 12.43 Cat4 2