
Quiz z zapytań SQL
Authored by Grzegorz Godlewski
Computers
8th Grade
Used 2+ times

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33 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Jaką instrukcję SQL używa się do modyfikacji danych w tabeli?
UPDATE
MODIFY
ALTER
INSERT
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Jakie zapytanie SQL wybierze wszystkie kolumny z tabeli "Employees"?
SELECT * FROM Employees
SHOW Employees
DISPLAY * FROM Employees
GET * FROM Employees
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Co robi zapytanie SQL: DELETE FROM Customers WHERE Age > 40?
Usuwa wszystkie rekordy
Usuwa rekordy, gdzie wiek klientów przekracza 40
Usuwa kolumnę "Age"
Usuwa tabelę "Customers"
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Jakie zapytanie SQL służy do zmiany wartości w istniejącym rekordzie?
UPDATE
SET VALUE
INSERT INTO
MODIFY
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Która klauzula SQL służy do filtrowania wyników?
WHERE
FILTER
GROUP BY
ORDER BY
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Jakie zapytanie SQL wybierze unikalne wartości z kolumny "City"?
SELECT DISTINCT City FROM Customers
SELECT UNIQUE City FROM Customers
SELECT ALL City FROM Customers
SELECT DIFFERENT City FROM Customers
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Jakie zapytanie SQL zliczy liczbę rekordów w tabeli "Orders"?
SELECT COUNT(*) FROM Orders
SELECT COUNT(Orders)
SELECT SUM(*) FROM Orders
SELECT COUNT(OrderID) FROM Orders
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