select cast(sum(case when datediff(month, last_purchase_date, @current_date) >= 6 then 1 else 0 end) * 100.0 / count(*) as decimal(10,2)) AS churn_rate_pct ...

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 ...

Why is the language developers and DBAs use to organize data such a mess? Here are 13 reasons we wish we could quit SQL, even though we probably won't. For all its popularity and success, SQL is a ...

1 Faculty of Science, Ontario Tech University, Oshawa, Canada. 2 Faculty of Business and IT, Ontario Tech University, Oshawa, Canada. 3 Legion Development Group, Oshawa, Canada. This study presents a ...

If you’ve always been in awe of folks using the Google Search Console API to do cool things, this article is a good read for you. You can use BigQuery with the GSC bulk data export to get some of 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 ...

Ifeanyi is a skilled data analyst passionate about writing and open-source development. His expertise in data analysis is complemented by his exceptional technical writing and documentation skill. In ...

pre-commit is a nice development tool to automatize the binding of pre-commit hooks. After installation and configuration pre-commit will run your hooks before you commit any change. CREATE OR REPLACE ...

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 ...