Popular SQL Courses From Khan Academy, Simplilearn and More That Cover Both Basics and Advanced Concepts. Modern digital systems continue to rely heavily on SQL for managing data within financial ...

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 ...

This Specialization is intended for a learner with no previous coding experience seeking to develop SQL query fluency. Through four progressively more difficult SQL projects with data science ...

Learning SQL is a great move for anyone working with data, but actually getting good at it can feel tricky, especially if you don’t have a database handy. Luckily, there are tons of free places online ...

Hello there! 👋 I'm Luca, a BI Developer with a passion for all things data, Proficient in Python, SQL and Power BI ...

Hello there! 👋 I'm Luca, a BI Developer with a passion for all things data, Proficient in Python, SQL and Power BI ...

Despite its steep licensing costs, SQL Server continues to prove its worth over open-source alternatives in some key areas. SQL Server is an expensive part of your IT stack -- SQL Server Enterprise ...

Abstract: Nowadays, SQL (Structured Query Language) is widely used in professional schools and colleges across the globe. $S Q L$ is an efficient domain-specific ...

: emp_id (integer, should not be NULL and should be a primary key)Q : emp_name (text, should not be NULL)Q : age (integer, should have a check constraint to ensure the age is at least 18)Q : email ...