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Pertemuan 6 – Database II

Program Diploma IPB - Aditya Wicaksono, SKomp 1

Klausa GROUP BY

SELECT column_name, aggregate_function(column_name)

FROM table_name

WHERE column_name operator value

GROUP BY column_name;

Program Diploma IPB - Aditya Wicaksono, SKomp 2

Klausa HAVING

SELECT column_name, aggregate_function(column_name)

FROM table_name

WHERE column_name operator value

GROUP BY column_name

HAVING aggregate_function(column_name) operator value;

Program Diploma IPB - Aditya Wicaksono, SKomp 3

AGGREGATE FUNCTION

Nama Fungsi Deskripsi

AVG() Mengembalikan nilai rata-rata

COUNT() Mengembalikan jumlah baris

MAX() Mengembalikan nilai terbesar

MIN() Mengembalikan nilai terkecil

SUM() Mengembalikan jumlah

Program Diploma IPB - Aditya Wicaksono, SKomp 4

AVG()

SELECT AVG(column_name) FROM table_name

Program Diploma IPB - Aditya Wicaksono, SKomp 5

COUNT()

SELECT COUNT(column_name) FROM table_name;

Program Diploma IPB - Aditya Wicaksono, SKomp 6

COUNT(DISTINCT)

SELECT COUNT(DISTINCT column_name) FROM table_name;

Program Diploma IPB - Aditya Wicaksono, SKomp 7

MAX()

SELECT MAX(column_name) FROM table_name;

Program Diploma IPB - Aditya Wicaksono, SKomp 8

MIN()

SELECT MIN(column_name) FROM table_name;

Program Diploma IPB - Aditya Wicaksono, SKomp 9

SUM()

SELECT SUM(column_name) FROM table_name;

Program Diploma IPB - Aditya Wicaksono, SKomp 10

SCALAR FUNCTION

Nama Fungsi Deskripsi

UCASE() Mengkonversi field ke upper case(huruf besar)

LCASE() Mengkonversi field ke lower case (huruf kecil)

MID() Ekstraksi karakter dari text field

LEN() Mengembalikan panjang dari text field

ROUND() Pembulatan angka kepada jumlah desimal yang ditentukan

NOW() Mengembalkan tanggal dan waktu sistem saat ini

FORMAT() Format bagaimana field akan ditampilkan

Program Diploma IPB - Aditya Wicaksono, SKomp 11

UCASE()

SELECT UCASE(column_name) FROM table_name;

Program Diploma IPB - Aditya Wicaksono, SKomp 12

LCASE()

SELECT LCASE(column_name) FROM table_name;

Program Diploma IPB - Aditya Wicaksono, SKomp 13

MID()

SELECT MID(column_name,start[,length]) FROM table_name;

Program Diploma IPB - Aditya Wicaksono, SKomp 14

LEN()

SELECT LEN(column_name) FROM table_name;

Program Diploma IPB - Aditya Wicaksono, SKomp 15

ROUND()

SELECT ROUND(column_name,decimals) FROM table_name;

Program Diploma IPB - Aditya Wicaksono, SKomp 16

NOW()

SELECT NOW() FROM table_name;

Program Diploma IPB - Aditya Wicaksono, SKomp 17

FORMAT()

SELECT FORMAT(column_name,format) FROM table_name;

Program Diploma IPB - Aditya Wicaksono, SKomp 18

Klausa LIMIT

SELECT column_name(s)

FROM table_name

LIMIT number;

Program Diploma IPB - Aditya Wicaksono, SKomp 19

JOIN

FULL JOIN RIGHT JOIN LEFT JOIN

INNER JOIN

Program Diploma IPB - Aditya Wicaksono, SKomp 20

JOIN

Program Diploma IPB - Aditya Wicaksono, SKomp 21

JOIN

SELECT column_name(s)

FROM table1

JOIN table2

ON table1.column_name=table2.column_name;

Program Diploma IPB - Aditya Wicaksono, SKomp 22

INNER JOIN = JOIN

SELECT column_name(s)

FROM table1

INNER JOIN table2

ON table1.column_name=table2.column_name;

Program Diploma IPB - Aditya Wicaksono, SKomp 23

LEFT JOIN

SELECT column_name(s)

FROM table1

LEFT JOIN table2

ON table1.column_name=table2.column_name;

Program Diploma IPB - Aditya Wicaksono, SKomp 24

LEFT OUTER JOIN = LEFT JOIN

SELECT column_name(s)

FROM table1

LEFT OUTER JOIN table2

ON table1.column_name=table2.column_name;

Program Diploma IPB - Aditya Wicaksono, SKomp 25

RIGHT JOIN

SELECT column_name(s)

FROM table1

RIGHT JOIN table2

ON table1.column_name=table2.column_name;

Program Diploma IPB - Aditya Wicaksono, SKomp 26

RIGHT OUTER JOIN = RIGHT JOIN

SELECT column_name(s)

FROM table1

RIGHT OUTER JOIN table2

ON table1.column_name=table2.column_name;

Program Diploma IPB - Aditya Wicaksono, SKomp 27

FULL OUTER JOIN

SELECT column_name(s)

FROM table1

FULL OUTER JOIN table2

ON table1.column_name=table2.column_name;

Program Diploma IPB - Aditya Wicaksono, SKomp 28

UNION

SELECT column_name(s) FROM table1

UNION

SELECT column_name(s) FROM table2;

SELECT column_name(s) FROM table1

UNION ALL

SELECT column_name(s) FROM table2;

Program Diploma IPB - Aditya Wicaksono, SKomp 29

INSERT INTO

INSERT INTO table_name (column1,column2,column3,...)

VALUES (value1,value2,value3,...);

Program Diploma IPB - Aditya Wicaksono, SKomp 30

UPDATE

UPDATE table_name

SET column1=value1,column2=value2,...

WHERE some_column=some_value;

Program Diploma IPB - Aditya Wicaksono, SKomp 31

DELETE

DELETE FROM table_name

WHERE some_column=some_value;

Program Diploma IPB - Aditya Wicaksono, SKomp 32

Terima Kasih

Program Diploma IPB - Aditya Wicaksono, SKomp 33