Limit number of rows per id in a SQL query [duplicate]

Answer 1

Adapting from another answer

  set @brand_id= '';
  set @num = 0;

  select
  products.id, products.brand_id,
  @num := if(@brand_id= brand_id, @num + 1, 1) as dummy_1,
  @brand_id:= brand_id as dummy_2,
  @num as row_number
  from products
  where brand_id IN ('1', '2','3')
  group by
  brand_id,
  row_number
  having row_number <= 10;

Answer 2

Try like this

SET @rownum =0;

SELECT id,brand_id FROM
(
    SELECT 
    products.id, products.brand_id, @rownum := @rownum + 1 AS rank
    FROM products
      JOIN (
        SELECT id, brand_id
        from products limit 10) 
        pinner ON products.id = pinner.id
    WHERE pinner.brand_id IN ('1', '2','3') 
) AS T
Where rank < 10