Job offersCompaniesTestsBlogI'm an employerSign upLog in
fr
fr
Home>IT Tests>Questions>PostgreSQL

25 interview questions on PostgreSQLfor developers (2026)

Test your technical skills before an interview of PostgreSQL with 25 corrected questions. Beginner, Intermediate or Expert level.

or
Technology
Profession
Test
Sort by
Newest
Most popular
Last review
Filter by
Published
3889
To review
10
25 questions
Easy
10 votes611 runs0 comment

Which command in PostgreSQL is used to delete a database?

Data Scientist
abdelghaniat Apr 19, 2024
Hard
6 votes579 runs0 comment

What is the mechanism in PostgreSQL that ensures the integrity of transactions and supports concurrent processing?

Data Scientist
abdelghaniat Apr 19, 2024
Medium
5 votes600 runs0 comment

What is the command to back up a database in PostgreSQL?

Data Scientist
abdelghaniat Apr 19, 2024
Hard
4 votes554 runs0 comment

What type of index is primarily used for full-text search in PostgreSQL?

Data Scientist
abdelghaniat Apr 19, 2024
Easy
3 votes586 runs0 comment

Which PostgreSQL command changes the definition of a database object, like a table?

Data Scientist
abdelghaniat Apr 19, 2024
Medium
2 votes546 runs0 comment

What does the ACID acronym stand for in the context of PostgreSQL transactions?

Data Scientist
abdelghaniat Apr 19, 2024
Medium
2 votes514 runs
1 comment

Which command is used to remove all rows from a table without deleting the table itself in PostgreSQL?

Data Scientist
abdelghaniat Apr 19, 2024
Hard
1 vote539 runs1 comment

What feature in PgAdmin allows you to visually design your database schema including tables, views, and relationships?

Data Scientist
abdelghaniat Apr 19, 2024
Medium
1 vote531 runs0 comment

Which clause is used in PostgreSQL to filter grouped records that do not meet a certain condition?

Data Scientist
abdelghaniat Apr 19, 2024
Easy
1 vote528 runs0 comment

Grant all privileges on a database to a user in PostgreSQL

Data Scientist
abdelghaniat Apr 19, 2024
Medium
1 vote520 runs0 comment

What PostgreSQL feature allows you to run functions on the database server-side?

Data Scientist
abdelghaniat Apr 19, 2024
Medium
1 vote514 runs0 comment

Add a unique constraint on the email column while creating the users table in PostgreSQL.

Data Scientist
abdelghaniat Apr 19, 2024
Easy
1 vote510 runs0 comment

Which data type in PostgreSQL is best suited for storing large blocks of text?

Data Scientist
abdelghaniat Apr 19, 2024
Medium
1 vote407 runs0 comment

What function is used to return the current date and time in PostgreSQL?

Data Scientist
timestamp
Dragon parfaitat Aug 23, 2024
Medium
1 vote189 runs0 comment

List all databases in PostgreSQL

Data Scientist
abdelghaniat Apr 19, 2024
Easy
0 vote536 runs0 comment

What is the default port number for PostgreSQL database server?

Data Scientist
abdelghaniat Apr 19, 2024
Hard
0 vote517 runs0 comment

What data type is used to store geographical objects for Geographic Information Systems (GIS) in PostgreSQL?

Data Scientist
abdelghaniat Apr 19, 2024
Medium
0 vote514 runs0 comment

How to create a recursive query in PostgreSQL?

Data Scientist
abdelghaniat Apr 19, 2024
Easy
0 vote496 runs0 comment

What is the term for the operation in PostgreSQL that combines rows from two or more tables based on a related column between them?

Data Scientist
abdelghaniat Apr 19, 2024
Easy
0 vote467 runs
1 comment

What data type is used specifically for storing boolean values in PostgreSQL?

Data Scientist
abdelghaniat Apr 19, 2024