This repository contains the solutions to the HackerRank SQL (Intermediate) Skills Certification Test. The test consists of two tasks that involve querying a database using SQL. As part of the ...

from country co INNER JOIN city ci ON co.id=ci.country_id INNER JOIN customer cu ON ci.id=cu.city_id INNER JOIN invoice i ON cu.id=i.customer_id from city ci INNER ...

In Introduction to Oracle 11g PL/SQL Programming training, students write stored procedures, functions, packages, and triggers, and implement complex business rules in Oracle. They learn programming, ...

SQL Server certifications are designed to validate your skills and knowledge in installing, configuring, administering, and developing SQL Server databases and applications. There are three levels ...

Established in 1986, SQL Star International Limited is a global IT Solutions & Services enterprise. With our presence across India and wholly-owned subsidiaries in Australia, Singapore and USA, SQL ...