💻Think like SQL Engine🔥Learn Writing Dynamic queries(INNER JOIN✅)
Intuition\n Describe your first thoughts on how to solve this problem. \n\n# Approach\n Describe your approach to solving the problem. \n\n# Complexity\n- Time 
# Intuition\n<!-- Describe your first thoughts on how to solve this problem. -->\n\n# Approach\n<!-- Describe your approach to solving the problem. -->\n\n# Complexity\n- Time complexity:\n<!-- Add your time complexity here, e.g. $$O(n)$$ -->\n\n- Space complexity:\n<!-- Add your space complexity here, e.g. $$O(n)$$ -->\n\n# Code\n```\n# Write your MySQL query statement below\n\nselect customer_id\nfrom customer c\ninner join product p on c.product_key = p.product_key\nwhere c.product_key is not null\ngroup by customer_id\nhaving count(distinct c.product_key) = (select count(product_key) from Product)\norder by customer_id asc\n\n\n```
['MySQL']