
Quiz 12 Postgres
Authored by Lucian Lazar
Computers
Professional Development
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Care este tipul de data pentru numere in Postgres?
NUMBER
NUMERIC
DOUBLE
SHORT
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Care este tipul de data pentru stringuri in Postgres?
VARCHAR
VARCHAR2
CHAR
STRING
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cand este obligatoriu sa folosim alias pentru subquery in Postgres?
In clauza FROM
In clauza WHERE
In clauza HAVING
Toate celelate variante
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cum extragem ziua din saptamana in Postgres
TO_CHAR
TO_DATE
EXTRACT (DOW FROM)
EXTRACT ('DOW' FROM)
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Care este functia prin care afisam in Postgres anumite valori in loc de NULL?
TO_CHAR
NVL
ISNULL
COALESCE
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ce clauza se foloseste in Postgres pentru a extrage doar primele inregistrari intr-o interogare?
FETCH FIRST ROWS ONLY
TOP
LIMIT
ROWNUM
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ce functie analitica folosim pentru a afisa rangul inregistrarilor fara pauze?
RANK
DENSE_RANK
LAG
LEAD
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