SELECT district FROM shop WHERE Number_products  <  3000 INTERSECT SELECT district FROM shop WHERE Number_products  >  10000
Find the districts in which there are both shops selling less than 3000 products and shops selling more than 10000 products.
SELECT district FROM shop WHERE Number_products < 3000 INTERSECT SELECT district FROM shop WHERE Number_products > 10000
select district from shop where number_products < value intersect select district from shop where number_products > value
Find the districts in which there are both shops selling less than 3000 products and shops selling more than 10000 products .