
Quiz o funkcjach SQL
Authored by Agnieszka Nowaczyk
Computers
1st Grade
Used 1+ times

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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Która funkcja oblicza średnią z wartości w kolumnie?
SUM()
AVG()
COUNT()
MIN()
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Co zwróci funkcja COUNT(*)?
Tylko unikalne wartości
Liczbę kolumn
Liczbę wszystkich wierszy
Suma wartości liczbowych
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Która funkcja zwraca największą wartość w kolumnie?
MAX()
TOP()
GREATEST()
UPPER()
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Co robi funkcja LOWER()?
Usuwa liczby
Zwraca najmniejszą wartość
Zmienia tekst na małe litery
Liczy ilość liter
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Która funkcja zsumuje wszystkie wartości z kolumny?
COUNT()
SUM()
AVG()
TOTAL()
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jakiej funkcji użyjesz, żeby zamienić tekst na wielkie litery?
BIG()
UPPER()
MAX()
CAPITAL()
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Co robi funkcja ROUND(liczba, 2)?
Zwraca pierwiastek
Zaokrągla do 2 miejsc po przecinku
Wypisuje 2 cyfry
Dzieli przez 2
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