Quiz o SQL
Quiz
•
Computers
•
9th Grade
•
Medium
Mateusz Kamiński-Drąg
Used 3+ times
FREE Resource
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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
Która klauzula w SQL służy do sortowania wyników zapytania?
FILTER
GROUP BY
ORDER BY
HAVING
2.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
Jakie słowo kluczowe pozwala grupować wyniki w SQL?
SORT
GROUP BY
FILTER
JOIN
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Który operator logiczny służy do filtrowania danych w WHERE?
AND
ORDER
SUM
DISTINCT
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Która z poniższych funkcji agregujących w SQL zwraca liczbę wierszy w grupie?
COUNT()
SUM()
AVG()
MIN()
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Które z poniższych zapytań zwróci wiersze posortowane rosnąco według kolumny "name"?
SELECT * FROM users GROUP BY name;
SELECT * FROM users ORDER BY name DESC;
SELECT * FROM users ORDER BY name ASC;
SELECT * FROM users SORT BY name;
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Co oznacza klauzula HAVING w SQL?
Filtrowanie wyników po sortowaniu
Filtrowanie wyników po zastosowaniu GROUP BY
Tworzenie podzapytań
Definiowanie indeksów
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Jakie polecenie utworzy indeks na kolumnie "price" w tabeli "products"?
ADD INDEX price ON products;
CREATE INDEX idx_price ON products(price);
CREATE TABLE INDEX price ON products;
MAKE INDEX ON products(price);
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