Quiz 9 subinterogari

Quiz 9 subinterogari

Professional Development

10 Qs

quiz-placeholder

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Quiz 9 subinterogari

Quiz 9 subinterogari

Assessment

Quiz

Computers

Professional Development

Practice Problem

Medium

Created by

Lucian Lazar

Used 12+ times

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10 questions

Show all answers

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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