About SQLiz.com

SQLiz.com is a learning and reference site for people who work with SQL and databases. It publishes task-focused tutorials, installation guides, practical examples, and reference pages for database systems and related tools.

What you can find here

• Tutorials for common database tasks, including querying, data changes, schema design, and administration.
• Reference pages for functions, data types, operators, statements, and error messages.
• Installation guides that compare distribution packages with vendor-maintained repositories when both are available.
• Examples for connecting databases to application languages and development tools.

Browse the MySQL tutorials, PostgreSQL tutorials, MariaDB Reference, or all articles. Use the site search to find a term or task across tutorials and reference pages.

Version-specific guidance

Database releases and operating-system packages change over time. For version-specific installation instructions, check the operating-system release and database series named in the guide, then follow its linked upstream documentation and repository information. Verify the installed client and server versions before using a system for important workloads.

Diagnostic tools and their limits

The browser-based diagnostics in SQLiz Tools do not connect to or change a live database. They use the information you enter to provide a local estimate or troubleshooting checklist. Check each tool’s assumptions, then verify any suggested action against the target database version and its official documentation before applying it.

Articles are authored and published under the SQLiz.com organization name. The site does not publish individual author biographies.