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Feedback #1

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b42d878
Setting up GitHub Classroom Feedback
github-classroom[bot] May 23, 2023
dd84f4d
Add files via upload
Topu646 Jun 1, 2023
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Topu646 Jun 1, 2023
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46 changes: 46 additions & 0 deletions DDL.sql
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drop table borrowings;
drop table bookRequests;
drop table books;
drop table members;



CREATE TABLE Books (
book_id INTEGER PRIMARY KEY,
title VARCHAR(30),
author VARCHAR(25),
publisher VARCHAR(25),
publish_year INTEGER,
total_quantity INTEGER,
available_quantity INTEGER
);

CREATE TABLE Members (
member_id INTEGER PRIMARY KEY,
first_name VARCHAR(15),
last_name VARCHAR(15),
email VARCHAR(35),
phone VARCHAR(20),
address VARCHAR(25)
);

CREATE TABLE Borrowings (
borrowing_id INTEGER PRIMARY KEY,
book_id INTEGER REFERENCES Books(book_id),
member_id INTEGER REFERENCES Members(member_id),
borrowing_date DATE,
due_date DATE,
return_date DATE
);

CREATE TABLE BookRequests (
request_id INTEGER PRIMARY KEY,
book_id INTEGER REFERENCES Books(book_id),
member_id INTEGER REFERENCES Members(member_id),
request_date DATE,
status VARCHAR(15)
);



48 changes: 48 additions & 0 deletions DML.sql
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INSERT INTO Books VALUES (1, 'To Kill a Mockingbird', 'Harper Lee', 'J. B. Lippincott', 1960, 5, 2);
INSERT INTO Books VALUES (2, '1984', 'George Orwell', 'Secker and Warburg', 1949, 3, 0);
INSERT INTO Books VALUES (3, 'The Great Gatsby', 'F. Scott Fitzgerald', 'Charles Scribner''s Sons', 1925, 4, 4);
INSERT INTO Books VALUES (4, 'Animal Farm', 'George Orwell', 'Secker and Warburg', 1945, 2, 2);
INSERT INTO Books VALUES (5, 'Brave New World', 'Aldous Huxley', 'Chatto and Windus', 1932, 3, 3);
INSERT INTO Books VALUES (6, 'The Catcher in the Rye', 'J.D. Salinger', 'Little, Brown and Company', 1951, 6, 6);
INSERT INTO Books VALUES (7, 'The Lord of the Rings', 'J.R.R. Tolkien', 'George Allen and Unwin', 1954, 10, 8);
INSERT INTO Books VALUES (8, 'One Hundred Years of Solitude', 'Gabriel Garc�a M�rquez', 'Editorial Sudamericana', 1967, 8, 5);
INSERT INTO Books VALUES (9, 'Pride and Prejudice', 'Jane Austen', 'T. Egerton, Whitehall', 1813, 5, 2);
INSERT INTO Books VALUES (10, 'The Hobbit', 'J.R.R. Tolkien', 'George Allen ', 1937, 4, 3);


INSERT INTO Members VALUES(1, 'John', 'Doe', 'johndoe@example.com', '555-555-5555', '123 Main St.');
INSERT INTO Members VALUES (2, 'Jane', 'Doe', 'janedoe@example.com', '555-555-5555', '456 Oak St.');
INSERT INTO Members VALUES (3, 'Bob', 'Smith', 'bobsmith@example.com', '555-555-5555', '789 Maple Ave.');
INSERT INTO Members VALUES (4, 'Alice', 'Johnson', 'alicejohnson@example.com', '555-555-5555', '321 Elm St.');
INSERT INTO Members VALUES (5, 'Tom', 'Wilson', 'tomwilson@example.com', '555-555-5555', '654 Pine St.');
INSERT INTO Members VALUES(6, 'Mary', 'Williams', 'marywilliams@example.com', '555-555-5555', '234 Elm St.');
INSERT INTO Members VALUES (7, 'Michael', 'Brown', 'michaelbrown@example.com', '555-555-5555', '876 Maple Ave.');
INSERT INTO Members VALUES (8, 'Sarah', 'Green', 'sarahgreen@example.com', '555-555-5555', '123 Oak St.');
INSERT INTO Members VALUES (9, 'David', 'Jones', 'davidjones@example.com', '555-555-5555', '456 Main St.');
INSERT INTO Members VALUES (10, 'Emily', 'Davis', 'emilydavis@example.com', '555-555-5555', '789 Pine St.');



INSERT INTO Borrowings VALUES(1, 1, 1, TO_DATE('2022-02-15', 'YYYY-MM-DD'), TO_DATE('2022-03-15', 'YYYY-MM-DD'), NULL);
INSERT INTO Borrowings VALUES(2, 6, 2, TO_DATE('2022-02-20', 'YYYY-MM-DD'), TO_DATE('2022-03-20', 'YYYY-MM-DD'), NULL);
INSERT INTO Borrowings VALUES(3, 3, 3, TO_DATE('2022-02-25', 'YYYY-MM-DD'), TO_DATE('2022-03-25', 'YYYY-MM-DD'), NULL);
INSERT INTO Borrowings VALUES(4, 7, 4, TO_DATE('2022-03-01', 'YYYY-MM-DD'), TO_DATE('2022-04-01', 'YYYY-MM-DD'), NULL);
INSERT INTO Borrowings VALUES(5, 8, 5, TO_DATE('2022-03-05', 'YYYY-MM-DD'), TO_DATE('2022-04-05', 'YYYY-MM-DD'), NULL);
INSERT INTO Borrowings VALUES(6, 9, 6, TO_DATE('2022-03-10', 'YYYY-MM-DD'), TO_DATE('2022-04-10', 'YYYY-MM-DD'), NULL);
INSERT INTO Borrowings VALUES(7, 10, 7, TO_DATE('2022-03-15', 'YYYY-MM-DD'), TO_DATE('2022-04-15', 'YYYY-MM-DD'), NULL);
INSERT INTO Borrowings VALUES(8, 1, 8, TO_DATE('2022-03-20', 'YYYY-MM-DD'), TO_DATE('2022-04-20', 'YYYY-MM-DD'), NULL);
INSERT INTO Borrowings VALUES(9, 6, 9, TO_DATE('2022-03-25', 'YYYY-MM-DD'), TO_DATE('2022-04-25', 'YYYY-MM-DD'), NULL);
INSERT INTO Borrowings VALUES(10, 3, 10, TO_DATE('2022-04-01', 'YYYY-MM-DD'), TO_DATE('2022-05-01', 'YYYY-MM-DD'), NULL);


INSERT INTO BookRequests VALUES (1, 2, 1, TO_DATE('2022-02-10', 'YYYY-MM-DD'), 'Approved');
INSERT INTO BookRequests VALUES(2, 4, 2, TO_DATE('2022-02-15', 'YYYY-MM-DD'), 'Pending');
INSERT INTO BookRequests VALUES(3, 5, 3, TO_DATE('2022-02-20', 'YYYY-MM-DD'), 'Rejected');
INSERT INTO BookRequests VALUES(4, 6, 4, TO_DATE('2022-02-25', 'YYYY-MM-DD'), 'Approved');
INSERT INTO BookRequests VALUES(5, 1, 5, TO_DATE('2022-03-01', 'YYYY-MM-DD'), 'Pending');
INSERT INTO BookRequests VALUES(6, 7, 6, TO_DATE('2022-03-05', 'YYYY-MM-DD'), 'Approved');
INSERT INTO BookRequests VALUES(7, 8, 7, TO_DATE('2022-03-10', 'YYYY-MM-DD'), 'Pending');
INSERT INTO BookRequests VALUES(8, 9, 8, TO_DATE('2022-03-15', 'YYYY-MM-DD'), 'Rejected');
INSERT INTO BookRequests VALUES(9, 10, 9, TO_DATE('2022-03-20', 'YYYY-MM-DD'), 'Approved');
INSERT INTO BookRequests VALUES(10, 1, 10, TO_DATE('2022-03-25', 'YYYY-MM-DD'), 'Pending');

145 changes: 145 additions & 0 deletions plsql.sql
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-- variable declaration and print value
set serveroutput on
declare

book_name books.title%type;

begin

select title into book_name from books where book_id = 3;

dbms_output.put_line(book_name);

end;
/

--Insert and set default value
set serveroutput on
declare
reqid NUMBER :=11;
bookid NUMBER :=9;
memberid NUMBER :=6;

begin
INSERT INTO BookRequests VALUES(reqid, bookid, memberid, TO_DATE('2022-03-25', 'YYYY-MM-DD'), 'Pending');
end;
/

--row type
set serveroutput on
declare
bookrow books%rowtype;
begin
select book_id,title,author into bookrow.book_id,bookrow.title,bookrow.author from books where book_id=7;
dbms_output.put_line(bookrow.book_id || bookrow.title||bookrow.author);
end;
/

--cursor and rowcount
set serveroutput on
declare
cursor book_cursor is select book_id, title, author , publish_year from books;
book_row books%rowtype;
begin
open book_cursor;
fetch book_cursor into
book_row.book_id,book_row.title,book_row.author,book_row.publish_year;
while book_cursor%found loop

dbms_output.put_line('book_id: '||book_row.book_id|| ' book_name:
'||book_row.title || ' author: ' ||book_row.author|| ' publish year:
'||book_row.publish_year);
dbms_output.put_line('Row count: '|| book_cursor%rowcount);
fetch book_cursor into
book_row.book_id,book_row.title,book_row.author,book_row.publish_year;
end loop;
close book_cursor;
end;
/

--loop if else
declare
id int :=1;
cursor c is select book_id, title, author , publish_year from books;
book_row books%rowtype;
begin
open c;
fetch c into book_row.book_id,book_row.title,book_row.author,book_row.publish_year;
for x in 1 .. 5 loop
if x = 3
then dbms_output.put_line('id number 3');
end if;
dbms_output.put_line('book_id: '||book_row.book_id|| ' book_name:
'||book_row.title || ' author: ' ||book_row.author|| ' publish year:
'||book_row.publish_year);

fetch c into book_row.book_id,book_row.title,book_row.author,book_row.publish_year;

end loop;
close c;
end;
/

--array and loop
set serveroutput on
declare
counter number;
book_name2 books.title%type;
TYPE NAMEARRAY IS VARRAY(5) OF books.title%type;
A_NAME NAMEARRAY:=NAMEARRAY();
begin
counter:=1;
for x in 1..5
loop
select title into book_name2 from books where book_id=x;
A_NAME.EXTEND();
A_NAME(counter):=book_name2;
counter:=counter+1;
end loop;
counter:=1;
WHILE counter<=A_NAME.COUNT
LOOP
DBMS_OUTPUT.PUT_LINE(A_NAME(counter));
counter:=counter+1;
END LOOP;
end;
/

--function
set SERVEROUTPUT on
create or replace function fun( id number) return varchar as
title varchar(30);
begin
select title into title from books where book_id = id;
return title;
end;
/

set SERVEROUTPUT on
declare

begin
dbms_output.put_line(fun(3));
end;
/

--procedure
set SERVEROUTPUT on
create or replace procedure proc( id number) is
title varchar(30);
begin
select title into title from books where book_id = id;
dbms_output.put_line(title);
end;
/

set SERVEROUTPUT on
declare
id number := 4;
begin
proc(id);
end;
/