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My SQL courses are available for on-site delivery at up to 40% off!  Book yours now!  DETAILS


Four Diamond SQL is the training and consulting practice of Rick Losk.  My mission is to help business professionals create efficient and maintainable SQL for Reporting Data Marts, Analytical Frameworks and data-driven web applications.

SQL Training
My two-day courses on SQL Basics and SQL Programming are designed for business analysts, BI and data analysts, reporting specialists, project managers and others who work with data from SQL Server DBs but aren't full-time developers ...  Learn More

SQL Consulting
Benefit from my expertise!  I design, build, repair and upgrade the ETL systems behind Reporting Data Marts and analytical applications for clients who demand timely, accurate information and a partner who knows how to do the job right ...  Learn More