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indeksy, null

Authored by Magda Dettlaff

Other

1st Grade

Used 1+ times

indeksy, null
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11 questions

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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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