Count all duplicates of each value

Question

I would like a SQL query for MS Jet 4.0 (MSSql?) to get a count of all the duplicates of each number in a database.

The fields are: id (autonum), number (text)

I have a database with a lot of numbers.

Each number should be returned in numerical order, without duplicates, with a count of all duplicates.

Number-fields containing 1, 2, 2, 3, 1, 4, 2 should return:

1, 2  
2, 3  
3, 1  
4, 1  

Answer 1

SELECT   col,
         COUNT(dupe_col) AS dupe_cnt
FROM     TABLE
GROUP BY col
HAVING   COUNT(dupe_col) > 1
ORDER BY COUNT(dupe_col) DESC

Answer 2

SELECT number, COUNT(*)
    FROM YourTable
    GROUP BY number
    ORDER BY number