
Quiz 5 joinuri
Quiz
•
Computers
•
Professional Development
•
Practice Problem
•
Easy
Lucian Lazar
Used 13+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ce tip de join este cel mai folosit?
JOIN
LEFT JOIN
CROSS JOIN
Self JOIN
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Daca vrem sa extragem ce este comun in doua multimi folosim?
JOIN
LEFT JOIN
CROSS JOIN
RIGHT JOIN
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O coloana comuna dintre doua tabele unite prin join trebuie prefixata in
SELECT
JOIN
WHERE
Toate celelate variante
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ce aduce LEFT JOIN din doua multimi?
Ce este comun
Ce este doar in dreapta
Ce este doar in stanga
Ce este comun si doar in stanga
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cand folosim INTERSECT trebuie sa avem grija
Sa selectam acelasi numar de coloane in ambele queryuri
Sa selectam acelasi tip de coloane in ambele queryuri
Ca datele din coloanele selectate sa faca match
Toate celelate variante
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
INTERSECT se face intre
Doua queryuri
Tabela din stanga si cea din dreapta
O tabela si ea insasi
Ce este comun si in doar in stanga
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Produsul cartezian dintre doua tabele returneaza?
Ce este comun
Ce este comun si in stanga
Ce este doar in stanga
Toate combinatiile posibile
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