assessing knowledge of SQL
assessing knowledge of SQL
SQL | PostgreSQL | Hotels - hotels page optimization - Improve the performance of the the hotels listing page which currently uses ORM.
assessing knowledge of SQL, MongoDB, NoSQL
assessing knowledge of MongoDB
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.
assessing knowledge of SQL, MySQL
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.
assessing knowledge of SQL
PostreSQL - Rewards Program - Write a query which will find the top 3 ranked customers according to the revenue they created with all of their orders
© Copyright 2020 by DevSkiller Sp. z o.o. | Technical screening and interview platform | All Rights Reserved.
