SQL Server Database Programming with Visual Basic.NET offers a guide to the fundamental knowledge and practical techniques for the design and creation of professional database programs that can be ...

SQL is a language used to get data from databases. It helps websites, apps, and reports work. Even social media and online shopping use SQL behind the scenes. The basic rules are easy to learn. But a ...

Getting good at SQL for interviews can feel like a puzzle. You know the basics, but putting them together in a way that impresses people is another thing entirely. Luckily, there are great tools out ...

Aggregate functions help turn large datasets into simple summaries used across many fields. GROUP BY and HAVING allow structured grouping and filtering of data for clearer reports. Functions like ...

Here are the 4 questions asked in HackerRank SQL Basic Certification Exam, from these 2 will be available in one attempt. SELECT ei.employee_ID, ei.name FROM employee_information ei JOIN ...

This page contains solutions for all HackerRank SQL challenges which were passed successfully. There can be multiple ways of approaching solution to any problem. Please find the provided solutions for ...

SELECT a.roll_number,a.name FROM student_information a INNER JOIN examination_marks b ON a.roll_number = b.roll_number GROUP BY b.roll_number HAVING SUM(b.subject_one + b.subject_two + b.subject_three ...