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Quiz
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Information Technology (IT)
•
1st Grade
•
Practice Problem
•
Hard
MIŁOSZ Turczak
FREE Resource
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22 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Jaki typ JOIN zwraca tylko te wiersze, które mają pasujące wartości w obu tabelach?
INNER JOIN
LEFT JOIN
RIGHT JOIN
FULL OUTER JOIN
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Jaki JOIN zwraca wszystkie rekordy z lewej tabeli oraz dopasowane rekordy z prawej tabeli?
INNER JOIN
LEFT JOIN
RIGHT JOIN
FULL OUTER JOIN
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Który JOIN zwraca wszystkie rekordy z obu tabel, gdy istnieje dopasowanie między kolumnami?
LEFT JOIN
RIGHT JOIN
INNER JOIN
FULL OUTER JOIN
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Jeśli tabela A ma 5 wierszy, a tabela B ma 3 wiersze z dopasowanymi kluczami, ile wierszy zwróci INNER JOIN?
5
3
8
Wszystkie wiersze z obu tabel
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Które słowo kluczowe JOIN służy do łączenia wierszy z dwóch lub więcej tabel na podstawie wspólnej kolumny?
FULL OUTER JOIN
JOIN
CROSS JOIN
SELF JOIN
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Który JOIN zwraca niepasujące wiersze z prawej tabeli, uzupełniając brakujące wartości NULL-ami?
LEFT JOIN
RIGHT JOIN
INNER JOIN
CROSS JOIN
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Który JOIN użyjesz, aby uzyskać iloczyn kartezjański dwóch tabel?
INNER JOIN
CROSS JOIN
LEFT JOIN
FULL OUTER JOIN
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