
indeksy, null
Quiz
•
Other
•
1st Grade
•
Medium
Magda Dettlaff
Used 1+ times
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11 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
wszystkie typy danych w CYPHER dopuszczają wartość NULL
tak
nie
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
zapytanie 2 IN [1,2,3] zwróci wartość
TRUE
FALSE
NULL
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Zapytanie 2 IN [1,3] zwróci wartość
TRUE
FALSE
NULL
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Zapytanie NULL IN [1,2,NULL] zwróci wartość
TRUE
FALSE
NULL
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Funkcja COUNT uwzględnia NULL
TAK
NIE
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
COALESCE(p.email,'nieznany') w przypadku gdy wartość email jest NULL zwróci
NULL
nieznany
błąd
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1+NULL zwróci
błąd
1
NULL
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