You're a DBA, sysadmin, or developer who manages Microsoft SQL Servers. It's your fault if they're down or slow. These tools help you understand what's going on in ...

SQL developers manage structured databases that power payments, healthcare, retail, and cloud systems. Cloud platforms increase demand for SQL skills, including scaling, backup systems, and security ...

SQL is the de facto query language used to interact with databases. Since SQL is declarative, users express the intended result of their query rather than the concrete procedural steps to produce the ...

In this blog, we will take a deep dive into subqueries and joins in SQL. Subqueries and joins are two important concepts in SQL, the standard programming language for managing and manipulating ...

Using unique subqueries in SQL Server can be a powerful technique to improve query performance, especially in scenarios where you need to compare distinct sets of data or ensure uniqueness in your ...

Read this SQL tutorial to learn when to use SELECT, JOIN, subselects and UNION to access multiple tables with a single statement. It’s sometimes difficult to know which SQL syntax to use when ...

A Microsoft Azure Supercloud customer is defined as a company that purchases at least one product from each product category. Write a query that effectively identifies the company ID of such ...

SQL databases have constraints on data types and consistency. NoSQL does away with them for the sake of speed, flexibility, and scale. One of the most fundamental choices to make when developing an ...

Need some hands-on SQL experience before starting full-time at your first data analyst job? Don’t know where to start? You’d be pleasantly surprised to know that there are not one but five different ...