sql query that groups different items into buckets

Question

I am trying to write a query that returns the count of items whose price falls into certrain buckets:

For example if my table is:

item_name | price
i         


        

Answer 1

You can try grouping by 10 units of price:

SELECT COUNT(*) AS tally,
       FLOOR(price/10) AS prange,
       CONCAT(10*FLOOR(price/10), "-", 10*FLOOR(price/10)+9) AS rstr
FROM my_table
GROUP BY prange;