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SQL developer interview questions and tests
assessing knowledge of Logical thinking, Math, MySQL, SQL
assessing knowledge of SQL
SQL | MySQL | Stamps catalogue | AVG Function - Select the stamps (name and price) with price greater than or equal to the total average price.
assessing knowledge of Logical thinking, SQL, MySQL
assessing knowledge of MySQL, SQL
SQL | MySQL | Stamps catalogue | A Self JOIN - Select stamps (name and location) that are in the same location.
SQL | Stamps catalogue | The three highest prices - Select three stamps (price and name) with the highest price.
Python | Pandas | HTML table parser - Implement a function to convert HTML table into a CSV-format file.
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, MongoDB, NoSQL
assessing knowledge of MongoDB
SQL | Fill sparse table - Write a query that will return the list of all users with the creation date and return the date from the previous not-null row for the entries affected with the bug.
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
SQL | Fill sparse table - Write a query that will return the list of all users with the creation date and return the date from the previous not-null row for the entries affected with the bug.
assessing knowledge of SQL
SQL | Books | find books without ratings - Select all title of the books which have no rating.
The candidate will be asked to solve two simple SQL queries related to a database with books and reviews data.
