Joining parts and part categories

The inner_join is the key to bring tables together. To use it, you need to provide the two tables that must be joined and the columns on which they should be joined.

In this exercise, you'll join a list of LEGO parts, available as parts, with these parts' corresponding categories, available as part_categories. For example, the part Sticker Sheet 1 for Set 1650-1 is from the Stickers part category. You can join these tables to see all parts' categories!