
Kuis SQL Dasar

Quiz
•
Computers
•
University
•
Easy

Muhammad Wildan
Used 2+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Fungsi agregat apa yang digunakan untuk menghitung rata-rata nilai dari suatu kolom?
COUNT
SUM
AVG
MIN
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pernyataan manakah yang benar tentang fungsi COUNT dalam SQL?
COUNT() hanya menghitung nilai unik
COUNT(col) menghitung semua baris termasuk null
COUNT() menghitung semua baris dalam tabel
COUNT(DISTINCT col) tidak menghilangkan duplikat
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Fungsi apa yang digunakan untuk menggantikan nilai NULL agar bisa dihitung dalam fungsi agregat?
REPLACE
ISNULL
NVL
TO_NUMBER
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Apa hasil dari perintah berikut? SELECT COUNT(DISTINCT department_id) FROM employees;
Menghitung semua department_id
Menghitung jumlah department_id unik
Menghitung seluruh baris
Menghapus data dengan department_id null
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pernyataan berikut ini yang benar tentang GROUP BY adalah:
Digunakan untuk menyaring baris sebelum agregasi
Digunakan untuk mengelompokkan data berdasarkan fungsi agregat
Digunakan untuk mengelompokkan data berdasarkan satu atau lebih kolom
Hanya dapat digunakan bersama fungsi MAX dan MIN
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Perintah HAVING digunakan untuk:
Menyaring baris sebelum dikelompokkan
Menyaring grup setelah proses agregasi
Mengurutkan data
Mengganti nilai null
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Apa keunikan dari GROUP BY ROLLUP dibandingkan GROUP BY biasa?
Menghilangkan nilai null
Menyaring data duplikat
Menampilkan subtotal dan grand total
Menyaring hasil agregasi
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