Select rows until a total amount is met in a column (mysql)

Question

I have seen this issue in SF, but me being a noob I just can\'t get my fried brain around them. So please forgive me if this feels like repetition.

My Sample Table

Answer 1

SELECT x.* 
  FROM supplier_stock x 
  JOIN supplier_stock y  
    ON y.supplier = x.supplier 
   AND y.id >= x.id 
 GROUP 
    BY supplier
     , id 
HAVING SUM(y.qty) <=5;