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47 lines
1.4 KiB
SQL
47 lines
1.4 KiB
SQL
CREATE SCHEMA librarydb;
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CREATE TABLE librarydb.book (
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id INTEGER NOT NULL,
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name VARCHAR ( 50 ) NOT NULL,
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author VARCHAR ( 50 ),
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publisher VARCHAR (50),
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tags JSON,
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genre_ids INTEGER[],
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PRIMARY KEY (id)
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);
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CREATE TABLE librarydb.member (
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id INTEGER NOT NULL,
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name VARCHAR ( 50 ) NOT NULL,
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PRIMARY KEY (id)
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);
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CREATE TABLE librarydb.issue_history (
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book_id INTEGER NOT NULL,
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member_id INTEGER NOT NULL,
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issue_date DATE,
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return_date DATE,
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CONSTRAINT fk_book FOREIGN KEY(book_id) REFERENCES librarydb.book(id),
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CONSTRAINT fk_member FOREIGN KEY(member_id) REFERENCES librarydb.member(id)
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);
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INSERT INTO librarydb.book (id, name, author) VALUES (1, 'Book 1', 'ABC');
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INSERT INTO librarydb.book (id, name, author) VALUES (2, 'Book 2', 'PQR');
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INSERT INTO librarydb.book (id, name, author) VALUES (3, 'Book 3', 'XYZ');
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INSERT INTO librarydb.member(id, name) VALUES (1, 'Member 1');
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INSERT INTO librarydb.member(id, name) VALUES (2, 'Member 2');
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INSERT INTO librarydb.issue_history VALUES (1, 1, TO_DATE('2021-09-27','YYYY-MM-DD'), TO_DATE('2021-09-27','YYYY-MM-DD'));
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INSERT INTO librarydb.issue_history VALUES (2, 2, TO_DATE('2021-09-27','YYYY-MM-DD'), NULL);
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CREATE VIEW librarydb.book_in_circulation as
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SELECT b.id, b.name, b.author, b.publisher, i.member_id, i.issue_date FROM
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librarydb.book b
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JOIN
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librarydb.issue_history i
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on b.id=i.book_id
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where i.return_date is null;
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