PostgreSQL

PostgreSQL online coding tests & interview questions

PostgreSQL
MIDDLE
Tested skills
Duration
44 minutes max.
Evaluation
Automatic
Test overview

Choice questions

assessing knowledge of SQL

Code gaps

assessing knowledge of SQL

Task - Level: Medium

SQL | PostgreSQL | Hotels - hotels page optimization - Improve the performance of the the hotels listing page which currently uses ORM.

MongoDB
MIDDLE
Tested skills
Duration
51 minutes max.
Evaluation
Automatic
Test overview

Choice questions

assessing knowledge of SQL, MongoDB, NoSQL

Code gaps

assessing knowledge of MongoDB

Task - Level: Medium

SQL | Customer Data - Find all the customers whose first and last names are not unique in this database, as well as the number of times each first and last name pair appears in the database.

MIDDLE
Tested skills
Duration
40 minutes max.
Evaluation
Automatic
Test overview

Choice questions

assessing knowledge of SQL, MySQL

Task - Level: Medium

SQL | Customer Data - Find all the customers whose first and last names are not unique in this database, as well as the number of times each first and last name pair appears in the database.