SQL podstawy 2
Quiz
•
Other
•
11th Grade
•
Practice Problem
•
Medium
Kamila Wiszniewska
Used 124+ times
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21 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Gdy w zapytaniu nie użyto GROUP BY, HAVING ma takie samo zasotoswanie jak WHERE
prawda
Fałsz
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Na jednej tabeli można założyć kilka kluczy głównych.
prawda
fałsz
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Rozwinięcie skrótu SQL to...
Strong Question Language
Structured Query Language
Strong Query Language
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jakie polecenie służy do usuwania wierszy z tabeli?
delete
remove
drop
cut
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Które zapytanie jest poprawne? Należy pobrać dane z kolumny MaxSpeed w tabeli Car.
FROM Car SELECT MaxSpeed
TAKE MaxSpeed FROM Car
SELECT MaxSpeed FROM Car
SELECT Car FROM MaxSpeed
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tabela Car przechowuje 20 prawidłowo wypełnionych wierszy. Co zwróci zapytanie 'SELECT COUNT(0) FROM CAR'?
0
1
20
NULL
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Która z wbudowanych funkcji SQL służy do zliczenia ilości wierszy?
SUM
AVG
COUNT
NUMBER
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