SQL · Meta · Medium
Assume the following tables are available. Books book_id (INT, primary key) title (VARCHAR) condition (ENUM('good', 'damaged', 'lost')) — the current physical state of the copy copies (INT) — how many copies of this title the library owns lifetime_value (DECIMAL) — total revenue earned from this title over its lifetime Loans loan_id (INT, primary key) book_id (INT, foreign key to Books.book_id) member_id (INT, foreign key to Members.member_id) loaned_at (DATETIME)…
Checking your access…