SQLazy Tool Simplifies Complex SQL Queries Using Step-by-Step Business Logic

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SQLazy is a free query tool that allows users to express complex SQL logic in plain, step-by-step business language without writing nested SQL manually. A practical example demonstrates how to identify whether data differences within grouped records stem from brand or type variations. The solution uses four distinct steps — grouping, expanding dimensions, filtering, and selecting columns — each verifiable independently to reduce errors. Key functions like icount, expand, and conditional filter replace verbose SQL constructs such as COUNT(DISTINCT), CROSS JOIN with UNION ALL, and nested CASE WHEN statements. SQLazy is available at sqlazy.com with no registration required and its source code is hosted on GitHub.

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