Meta Data Engineer interview questions

All the python and sql questions were related to books . In sql given 4 tables: books, author, sales, customer. SQL (medium- hard)queries were related to find ratios and specific data . Python programs(simple and logical) are related to basic data structures. As per my experience, meta is looking for candidate who is really strong in Sql, quick and logical thinker. Now I realize why meta is so successful .

Basic SQL and Python question with a simple yes/no or one word answers