
Quiz o podstawach SQL
Quiz
•
Professional Development
•
University
•
Practice Problem
•
Easy
Kamil Czaja
Used 1+ times
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8 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Która klauzula służy do filtrowania wyników przed grupowaniem?
HAVING
WHERE
FILTER
GROUP BY
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Które z poniższych zapytań zwróci listę wszystkich produktów w kolejności od najdroższego do najtańszego?
SELECT * FROM Products ORDER BY Price ASC;
SELECT * FROM Products SORT BY Price DESC;
SELECT * FROM Products ORDER BY Price DESC;
SELECT * FROM Products WHERE Price DESC;
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Która funkcja agregująca zwróci liczbę zamówień dla każdego klienta?
SUM(Orders)
COUNT(Orders)
AVG(Orders)
MAX(Orders)
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Które z poniższych zapytań znajdzie produkty z ceną między 100 a 500?
SELECT * FROM Products WHERE Price > 100 AND Price < 500;
SELECT * FROM Products WHERE Price BETWEEN 100 AND 500;
SELECT * FROM Products WHERE Price > 0;
SELECT CategoryID, Price/COUNT(*) FROM Products GROUP BY CategoryID;
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Co zwróci zapytanie: SELECT * FROM Products WHERE ProductName LIKE 'S%'?
Produkty zawierające literę 'S' w dowolnym miejscu nazwy
Produkty, których nazwa zaczyna się na 'S'
Produkty, których nazwa kończy się na 'S'
Produkty, których nazwa ma dokładnie jeden znak 'S'
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Które zapytanie znajdzie 5 najdroższych produktów?
SELECT TOP 5 * FROM Products ORDER BY Price DESC;
SELECT * FROM Products WHERE RowNum < 3;
SELECT CategoryID FROM Products WHERE COUNT() > 3 GROUP BY CategoryID;
SELECT CategoryID FROM Products GROUP BY CategoryID HAVING COUNT() > 3;
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Co robi operator LIKE?
Porównuje wartości liczbowe
Sprawdza dopasowanie do wzorca tekstu
Łączy tabele
Filtruje wyniki po grupowaniu
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