Data Manipulation Language Bag. 3

Transcription

1 Data Manipulation Language Bag. 3 Oleh: Harnan Malik Abdullah, ST., MSc. Program Pendidikan Vokasi Universitas Brawijaya 2017

2 Content 1. Join 2. Inner Join 3. Outer Join Left Join Right Join Full Join

3 SQL JOIN An SQL JOIN clause is used to combine rows from two or more tables, based on a common field between them. The most common type of join is: SQL INNER JOIN (simple join). An SQL INNER JOIN returns all rows from multiple tables where the join condition is met.

4 SQL INNER JOIN Keyword The INNER JOIN keyword selects all rows from both tables as long as there is a match between the columns in both tables. SQL INNER JOIN Syntax SELECT column_name(s) FROM table1 INNER JOIN table2 ON table1.column_name=table2.column_name; or: SELECT column_name(s) FROM table1 JOIN table2 ON table1.column_name=table2.column_name; PS! INNER JOIN is the same as JOIN.

5 Tabel: Customers CustomerID CustomerName Address City 1 Yogi Darmanu Jl. A Yani No 32 Surabaya 2 Gigih Mardana Jl. Tanjung No. 3 Kediri 3 Ari Satriya Jl. Arumdalu No. 7A Malang 4 Bambang Suparjo Jl. Kelud No. 99 Blitar 5 Muhsin Efendi Pasuruan Tabel: Orders OrderID CustomerID EmployeeID OrderDate ShipperID /4/ /5/ /8/ /8/ /9/ /10/ /11/ /12/ SELECT Orders.OrderID, Customers.CustomerName, Orders.OrderDate FROM Orders INNER JOIN Customers ON Orders.CustomerID=Customers.CustomerID;

6 Tabel: Customers CustomerID CustomerName Address City 1 Yogi Darmanu Jl. A Yani No 32 Surabaya 2 Gigih Mardana Jl. Tanjung No. 3 Kediri 3 Ari Satriya Jl. Arumdalu No. 7A Malang 4 Bambang Suparjo Jl. Kelud No. 99 Blitar 5 Muhsin Efendi Pasuruan Tabel: Orders OrderID CustomerID EmployeeID OrderDate ShipperID /4/ /5/ /8/ /8/ /9/ /10/ /11/ /12/ SELECT Orders.OrderID, Customers.CustomerName, FROM Orders INNER JOIN Customers ON Orders.CustomerID=Customers.CustomerID; OrderID CustomerName Orders.OrderDate OrderDate Yogi Darmanu 7/12/ Gigih Mardana 7/8/ Gigih Mardana 7/9/ Bambang Suparjo 7/4/ Bambang Suparjo 7/11/ Muhsin Efendi 7/5/ Muhsin Efendi 7/10/1996

7 Tabel: Customers CustomerID CustomerName Address City 1 Yogi Darmanu Jl. A Yani No 32 Surabaya 2 Gigih Mardana Jl. Tanjung No. 3 Kediri 3 Ari Satriya Jl. Arumdalu No. 7A Malang 4 Bambang Suparjo Jl. Kelud No. 99 Blitar 5 Muhsin Efendi Pasuruan Tabel: Orders OrderID CustomerID EmployeeID OrderDate ShipperID /4/ /5/ /8/ /8/ /9/ /10/ /11/ /12/ SELECT Orders.ShipperID, Customers.CustomerName, Customers.City FROM Orders INNER JOIN Customers ON Orders.CustomerID=Customers.CustomerID; Bagaimana Hasilnya????

8 SQL LEFT JOIN Keyword The LEFT JOIN keyword returns all rows from the left table (table1), with the matching rows in the right table (table2). The result is NULL in the right side when there is no match. SQL LEFT JOIN Syntax SELECT column_name(s) FROM table1 LEFT JOIN table2 ON table1.column_name=table2.column_name; or: SELECT column_name(s) FROM table1 LEFT OUTER JOIN table2 ON table1.column_name=table2.column_name; PS! In some databases LEFT JOIN is called LEFT OUTER JOIN.

9 Tabel: Customers CustomerID CustomerName Address City 1 Yogi Darmanu Jl. A Yani No 32 Surabaya 2 Gigih Mardana Jl. Tanjung No. 3 Kediri 3 Ari Satriya Jl. Arumdalu No. 7A Malang 4 Bambang Suparjo Jl. Kelud No. 99 Blitar 5 Muhsin Efendi Pasuruan Tabel: Orders OrderID CustomerID EmployeeID OrderDate ShipperID /4/ /5/ /8/ /8/ /9/ /10/ /11/ /12/ SELECT Customers.CustomerName, Orders.OrderID, Orders.OrderDate FROM Customers LEFT JOIN Orders ON Customers.CustomerID=Orders.CustomerID;

10 Tabel: Customers CustomerID CustomerName Address City 1 Yogi Darmanu Jl. A Yani No 32 Surabaya 2 Gigih Mardana Jl. Tanjung No. 3 Kediri 3 Ari Satriya Jl. Arumdalu No. 7A Malang 4 Bambang Suparjo Jl. Kelud No. 99 Blitar 5 Muhsin Efendi Pasuruan Tabel: Orders OrderID CustomerID EmployeeID OrderDate ShipperID /4/ /5/ /8/ /8/ /9/ /10/ /11/ /12/ SELECT Customers.CustomerName, Orders.OrderID, Orders.OrderDate FROM Customers LEFT JOIN Orders ON Customers.CustomerID=Orders.CustomerID; CustomerName OrderID OrderDate Yogi Darmanu /12/1996 Gigih Mardana /8/1996 Gigih Mardana /9/1996 Ari Satriya Null Null Bambang Suparjo /4/1996 Bambang Suparjo /11/1996 Muhsin Efendi /5/1996 Muhsin Efendi /10/1996

11 SQL RIGHT JOIN Keyword The RIGHT JOIN keyword returns all rows from the right table (table2), with the matching rows in the left table (table1). The result is NULL in the left side when there is no match. SQL RIGHT JOIN Syntax SELECT column_name(s) FROM table1 RIGHT JOIN table2 ON table1.column_name=table2.column_name; or: SELECT column_name(s) FROM table1 RIGHT OUTER JOIN table2 ON table1.column_name=table2.column_name; PS! In some databases RIGHT JOIN is called RIGHT OUTER JOIN.

12 Tabel: Employees EmployeeID EmployeeName Address City 1 Agus Faisal Jl. A Yani No 32 Malang 2 Jatmiko Nazrizal Jl. Tanjung No. 3 Malang 3 Peter Sujono Jl. Arumdalu No. 7A Jakarta 4 Santika Savana Jl. Kelud No. 99 Lumajang 5 Inggil Baegopa Jl. A Yani No 77 Surabaya Tabel: Orders OrderID CustomerID EmployeeID OrderDate ShipperID /4/ /5/ /8/ /8/ /9/ /10/ /11/ /12/ SELECT Employees. EmployeeName, Orders.OrderID, Orders.OrderDate FROM Orders RIGHT JOIN Employees ON Orders.EmployeeID=Employees. EmployeeID;

13 Tabel: Employees EmployeeID EmployeeName Address City 1 Agus Faisal Jl. A Yani No 32 Malang 2 Jatmiko Nazrizal Jl. Tanjung No. 3 Malang 3 Peter Sujono Jl. Arumdalu No. 7A Jakarta 4 Santika Savana Jl. Kelud No. 99 Lumajang 5 Inggil Baegopa Jl. A Yani No 77 Surabaya Tabel: Orders OrderID CustomerID EmployeeID OrderDate ShipperID /4/ /5/ /8/ /8/ /9/ /10/ /11/ /12/ SELECT Employee.s EmployeeID, Orders.OrderID, Orders.OrderDate FROM Orders RIGHT JOIN Employees ON Orders.CustomerID=Employees.CustomerID; EmployeeName OrderID OrderDate Agus Faisal Null Null Jatmiko Nazrizal Null Null Peter Sujono /8/1996 Peter Sujono /10/1996 Santika Savana /8/19968 Santika Savana /9/1996 Inggil Baegopa /5/1996 Inggil Baegopa /10/1996

14 SQL FULL OUTER JOIN Keyword The FULL OUTER JOIN keyword returns all rows from the left table (table1) and from the right table (table2). The FULL OUTER JOIN keyword combines the result of both LEFT and RIGHT joins. SQL FULL OUTER JOIN Syntax SELECT column_name(s) FROM table1 FULL OUTER JOIN table2 ON table1.column_name=table2.column_name;

15 Tabel: Employees EmployeeID EmployeeName Address City 1 Agus Faisal Jl. A Yani No 32 Malang 2 Jatmiko Nazrizal Jl. Tanjung No. 3 Malang 3 Peter Sujono Jl. Arumdalu No. 7A Jakarta 4 Santika Savana Jl. Kelud No. 99 Lumajang 5 Inggil Baegopa Jl. A Yani No 77 Surabaya Tabel: Orders OrderID CustomerID EmployeeID OrderDate ShipperID /4/ /5/ /8/ /8/ /9/ SELECT Orders.OrderID, Employees. EmployeeName, Orders.OrderDate FROM Employees FULL OUTER JOIN Orders ON Employees.EmployeeID=Orders.EmployeeID;

16 Tabel: Employee EmployeeID EmployeeName Address City 1 Agus Faisal Jl. A Yani No 32 Malang 2 Jatmiko Nazrizal Jl. Tanjung No. 3 Malang 3 Peter Sujono Jl. Arumdalu No. 7A Jakarta 4 Santika Savana Jl. Kelud No. 99 Lumajang 5 Inggil Baegopa Jl. A Yani No 77 Surabaya Tabel: Orders OrderID CustomerID EmployeeID OrderDate ShipperID /4/ /5/ /8/ /8/ /9/ SELECT Orders.OrderID, Employee. EmployeeName, Orders.OrderDate FROM Employees FULL OUTER JOIN Orders ON Customers.CustomerID=Orders.CustomerID; OrderID EmployeeName OrderDate Null Agus Faisal Null Jatmiko Nazrizal 7/9/ Jatmiko Nazrizal 7/4/1996 Null Peter Sujono Null Santika Savana 7/4/ Inggil Baegopa 7/5/ Null 7/8/1996

17 Ringkasan 1. Join 2. Inner Join 3. Left Join 4. Right Join 5. Full Join

18 ありがとう Dankjewel Grazie Gracias Salamat 감사합니다 Terimakasih Thank you شكرا 谢谢 ขอบค ณ Danke நன ற gratias tibi спасибо Merci