Good challenge, but the description is not very clear. Here's how I think it could be rewritten:

Presented below is a schema relating toys to a toy factory.

Table "toy_factory"

• id[pk]
• name

Table "toys"

• id
• name
• factory_id[fk]

Write a query that returns all the fields in toy_factory, counts the number of toys each factory has made (return the column as 'toy_count'), and groups these counts by the corresponding factory.