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SQL developer interview questions and tests
valutare la conoscenza di Pensiero logico, Matematica, MySQL, SQL
valutare la conoscenza di SQL
SQL | MySQL | Stamps catalogue | AVG Function - Select the stamps (name and price) with price greater than or equal to the total average price.
valutare la conoscenza di Pensiero logico, SQL, MySQL
valutare la conoscenza di MySQL, SQL
SQL | MySQL | Stamps catalogue | A Self JOIN - Select stamps (name and location) that are in the same location.
SQL | Catalogo francobolli | I tre prezzi più alti - Seleziona i tre francobolli (prezzo e nome) con il prezzo più alto.
Python | Pandas | Parser di tabelle HTML - Implementa una funzione per convertire una tabella HTML in un file in formato CSV.
valutare la conoscenza di SQL, MongoDB, NoSQL
valutare la conoscenza di 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.
valutare la conoscenza di SQL, MongoDB, NoSQL
valutare la conoscenza di 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.
valutare la conoscenza di 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.
valutare la conoscenza di 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.
valutare la conoscenza di 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.
