SQL matura 2021
Quiz
•
Computers
•
12th Grade
•
Practice Problem
•
Medium
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7 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Wynikiem zapytania SELECT produkt FROM produkty WHERE (cena = 2 OR cena = 4) jest cyrkiel
Prawda
Fałsz
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Wynikiem zapytania SELECT AVG(cena) FROM produkty WHERE sztuk IN (125, 160) jest 5
Prawda
Fałsz
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Wynik zapytania SELECT * FROM tabela1 JOIN tabela2 ON tabela1.pole = tabela2.pole może być pusty przy niepustych tabelach tabela1 oraz tabela2.
Prawda
Fałsz
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Wynikiem zapytania SELECT SUM(sztuk) FROM produkty WHERE (cena = 1 OR cena = 2) jest 660
Prawda
Fałsz
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Zapytanie postaci SELECT * FROM tabela1 WHERE pole LIKE (...) może w pewnych warunkach dać wszystkie rekordy z tabeli tabela1.
Prawda
Fałsz
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Zapytanie UPDATE może zmienić wartości pól w bazie danych.
Prawda
Fałsz
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Wynikiem zapytania SELECT COUNT(cena) FROM produkty WHERE cena BETWEEN 2 AND 4 jest 2
Prawda
Fałsz
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