
Quiz 9 subinterogari
Quiz
•
Computers
•
Professional Development
•
Practice Problem
•
Medium
Lucian Lazar
Used 12+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ce proprietati are o subinterogare?
Este un select in select
Se trece intre paranteze
Apare doar in dreapta unui operator
Toate celelate variante
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cum se executa o subinterogare necorelata?
Singura
Impreuna cu selectul extern
Dupa selectul extern
Nu se poate executa pentru ca nu este corelata
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cum se executa o subinterogare corelata?
Singura
Impreuna cu selectul extern
Dupa selectul extern
Inaintea selectului extern
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ce proprietati are o subinterogare necorelata?
Se poate executa singura
Returneaza un rezultat
Rezultatul este folosit de selectul extern
Toate celelate variante
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ce rezultat obtinem daca executam separat doar subinterogarea necorelata?
Rezultatul subinterogarii
Eroarea invalid identifier
Eroarea too many rows
Nici una din celelalte variante
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In ce clauza ale unei interogari SQL folosim cel mai des o subinterogare?
FROM
WHERE
HAVING
JOIN
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ce alias folosim pentru o subinterogare care selecteaza date dintr-o tabela si este folosita apoi intr-un join?
Orice alias
Numele tabelei
Prima litera din numele tabelei
Nu este niciodata necasar sa folosim alias
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