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Multiple Table cont...
Praktikum Sistem Basis Data
• Fungsi STRAIGHT JOIN hampir sama dengan basic
JOIN, namun kelebihannya adalah pada tabel akan dibaca
mulai dari sebelah kiri sampai kanan sehingga lebih
optimal , secara umum syntax nya adalah sebagai berikut:

Straight Join
SELECT judul, ThnTerbit, S.studioID AS Studio
FROM music AS M STRAIGHT_JOIN Studio AS S
STRAIGHT_JOIN Album AS A

WHERE

M.musicID=A.musicID

AND

S.studioID=A.studioID

AND

ThnTerbit<2008
ORDER BY judul;

Pada straight join pembuatan kondisi kembali ke WHERE sehingga USING dan
ON tidak digunakan, adapun metode lain dalam penggunaan syntax ini adalah ;
SELECT

STRAIGHT_JOIN

judul,ThnTerbit,S.studioID

AS

Studio

FROM music AS M, studio AS S, album AS A
WHERE

M.musicID=A.musicID

AND

ThnTerbit<2008
ORDER BY judul;

Straight Syntax

S.studioID=A.studioID

AND
• Fungsi Outer Join yaitu untuk menampilkan keseluruhan
data yang berelasi (Minimal 2 tabel) dimana terdapat
salah satu data yang tidak dimiliki pasangan di tabel lain,
metode yang digunakan ada dua macam yaitu LEFT
JOIN dan RIGHT JOIN

Outer Join
• Syntax Left Join hampir sama dengan INNER JOIN atau
CROSS, namun sekarang kita harus memasukan keywordnya,
berikut adalah syntaxnya

• Syntax query :
SELECT judul, ThnTerbit, studioID

FROM music AS M LEFT JOIN album AS A
ON M.musicID=A.musicID
ORDER BY judul;

1. Left Join
• Bisa dengan syntax :
SELECT judul, ThnTerbit,studioID
FROM music AS M LEFT JOIN album AS A
USING (musicID)
ORDER BY judul;

• Syntax Query untuk dua tabel berelasi:
SELECT judul, ThnTerbit,S.studioID AS Studio
FROM music AS M LEFT JOIN album AS A ON M.musicID=A.musicID
LEFT JOIN Studio AS S ON A.studioID=S.studioID

ORDER BY judul;

...left Join
• Fungsi Right Join merupakan kebalikan dari LEFT JOIN namun
memiliki cara kerja yang sama dan sekarang data yang di tampilkan
dimulai dari sebelah kanan ke kiri, berikut syntax secara umumnya:

SELECT judul, ThnTerbit, S.studioID AS Studio
FROM music AS M RIGHT JOIN album AS A
ON M.musicID=A.musicID
RIGHT JOIN Studio AS S ON S.studioID=A.studioID
ORDER BY ThnTerbit;

2. Right Join
• Natural Join dapat menspesifikasikan letak JOIN (FULL, RIGHT,
atau LEFT), berikut syntax secara umumnya

SELECT judul, ThnTerbit, S.studioID AS Studio
FROM music AS M NATURAL JOIN album AS A NATURAL JOIN
Studio AS S
WHERE ThnTerbit<2008

ORDER BY judul;

Pada Natural Join tidak ada kondisi ON ataupun USING, hal ini dikarenakan
NATURAL JOIN secara otomatis menghubungkan kata kunci yang sama
antar tabel yang berelasi.

Natural Join
• Pada statement Update fungsi basic join dapat juga
digunakan hal ini dapat dilihat dari syntax yang dimiliki
statement update

Joining Tabel pada Statement
UPDATE dan DELETE
• Implementasi Query:
UPDATE album CROSS JOIN studio USING (studioID)
CROSS JOIN music USING (musicID)
SET NamaStudio=”Angkasa Rec”
WHERE PemilikStudio=”SONY”;
Hasil dari fungsi diatas sebenarnya sama dengan proses UPDATE biasa
namun pada proses ini disisipkan fungsi join

Syntax Query (update)
• sementara untuk fungsi delete dapat diimplementasikan
dengan :

DELETE A,S
FROM Studio AS S INNER JOIN album AS A ON
S.studioID=A.studioID INNER JOIN music AS M ON
M.musicID=A.musicID

WHERE PemilikStudio=”kadiman”

Syntax Query (delete)

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Akses multiple table 2

  • 2. • Fungsi STRAIGHT JOIN hampir sama dengan basic JOIN, namun kelebihannya adalah pada tabel akan dibaca mulai dari sebelah kiri sampai kanan sehingga lebih optimal , secara umum syntax nya adalah sebagai berikut: Straight Join
  • 3. SELECT judul, ThnTerbit, S.studioID AS Studio FROM music AS M STRAIGHT_JOIN Studio AS S STRAIGHT_JOIN Album AS A WHERE M.musicID=A.musicID AND S.studioID=A.studioID AND ThnTerbit<2008 ORDER BY judul; Pada straight join pembuatan kondisi kembali ke WHERE sehingga USING dan ON tidak digunakan, adapun metode lain dalam penggunaan syntax ini adalah ; SELECT STRAIGHT_JOIN judul,ThnTerbit,S.studioID AS Studio FROM music AS M, studio AS S, album AS A WHERE M.musicID=A.musicID AND ThnTerbit<2008 ORDER BY judul; Straight Syntax S.studioID=A.studioID AND
  • 4. • Fungsi Outer Join yaitu untuk menampilkan keseluruhan data yang berelasi (Minimal 2 tabel) dimana terdapat salah satu data yang tidak dimiliki pasangan di tabel lain, metode yang digunakan ada dua macam yaitu LEFT JOIN dan RIGHT JOIN Outer Join
  • 5. • Syntax Left Join hampir sama dengan INNER JOIN atau CROSS, namun sekarang kita harus memasukan keywordnya, berikut adalah syntaxnya • Syntax query : SELECT judul, ThnTerbit, studioID FROM music AS M LEFT JOIN album AS A ON M.musicID=A.musicID ORDER BY judul; 1. Left Join
  • 6. • Bisa dengan syntax : SELECT judul, ThnTerbit,studioID FROM music AS M LEFT JOIN album AS A USING (musicID) ORDER BY judul; • Syntax Query untuk dua tabel berelasi: SELECT judul, ThnTerbit,S.studioID AS Studio FROM music AS M LEFT JOIN album AS A ON M.musicID=A.musicID LEFT JOIN Studio AS S ON A.studioID=S.studioID ORDER BY judul; ...left Join
  • 7. • Fungsi Right Join merupakan kebalikan dari LEFT JOIN namun memiliki cara kerja yang sama dan sekarang data yang di tampilkan dimulai dari sebelah kanan ke kiri, berikut syntax secara umumnya: SELECT judul, ThnTerbit, S.studioID AS Studio FROM music AS M RIGHT JOIN album AS A ON M.musicID=A.musicID RIGHT JOIN Studio AS S ON S.studioID=A.studioID ORDER BY ThnTerbit; 2. Right Join
  • 8. • Natural Join dapat menspesifikasikan letak JOIN (FULL, RIGHT, atau LEFT), berikut syntax secara umumnya SELECT judul, ThnTerbit, S.studioID AS Studio FROM music AS M NATURAL JOIN album AS A NATURAL JOIN Studio AS S WHERE ThnTerbit<2008 ORDER BY judul; Pada Natural Join tidak ada kondisi ON ataupun USING, hal ini dikarenakan NATURAL JOIN secara otomatis menghubungkan kata kunci yang sama antar tabel yang berelasi. Natural Join
  • 9. • Pada statement Update fungsi basic join dapat juga digunakan hal ini dapat dilihat dari syntax yang dimiliki statement update Joining Tabel pada Statement UPDATE dan DELETE
  • 10. • Implementasi Query: UPDATE album CROSS JOIN studio USING (studioID) CROSS JOIN music USING (musicID) SET NamaStudio=”Angkasa Rec” WHERE PemilikStudio=”SONY”; Hasil dari fungsi diatas sebenarnya sama dengan proses UPDATE biasa namun pada proses ini disisipkan fungsi join Syntax Query (update)
  • 11. • sementara untuk fungsi delete dapat diimplementasikan dengan : DELETE A,S FROM Studio AS S INNER JOIN album AS A ON S.studioID=A.studioID INNER JOIN music AS M ON M.musicID=A.musicID WHERE PemilikStudio=”kadiman” Syntax Query (delete)