SQL podstawy 2

SQL podstawy 2

11th Grade

21 Qs

quiz-placeholder

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SQL podstawy 2

SQL podstawy 2

Assessment

Quiz

Other

11th Grade

Practice Problem

Medium

Created by

Kamila Wiszniewska

Used 123+ 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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