Question

I have a form where i enter min price and max price when creating product details. In the product search i have also 2 fields called min and max. So how can i get the result of given range considering the range given when inserting products

Products

min  max

10    15
15    30
20    30 

In the search form i insert min as 5 and max as 16. Which products i will get in the result and whats the best theory for searching considering practical situations.

Answer 1

Compare opposite ends of each range to find products in the overlap:

select * from products
where min < $max and max > $min

This approach works well for date ranges too.