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Quiz 4 joinuri

Authored by Lucian Lazar

Computers

Professional Development

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Quiz 4 joinuri
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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Ce clauza folosim intr-o interogare SQL pentru a uni doua tabele?

SELECT

FROM

JOIN

WHERE

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Care este ordinea corecta a clauzelor unei interogari SQL?

SELECT FROM WHERE JOIN

SELECT JOIN FROM WHERE

SELECT WHERE FROM JOIN

SELECT FROM JOIN WHERE

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Ce clauza introduce o conditie de join dintre doua tabele?

FROM

JOIN

ON

WHERE

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Ca sa nu primim eroare la executie, trebuie sa prefixam cu aliasi?

Coloanele care exista in mai multe tabele

Toate coloanele

Nici o coloana

Coloanele din clauza JOIN

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Joinul intre doua tabele se face pe o coloana care

E cheie primara in una din tabele

E cheie straina in una din tabele

Ambele variante

Nici una din variante nu este obligatorie

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Cate tabele putem uni prin join?

Maxim 2

Maxim 3

Maxim 8

Un numar nelimitat de tabele

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Clauza INNER JOIN este

Echivalenta cu JOIN

Un alt tip de join

Nu mai este suportata

Valabila doar in bazele de date Oracle

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