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SQL tricks with billionaires data

Intermediate SQL tutorial demonstrating REGEXP for advanced filtering, IF & CASE statements to create categories, SUBQUERIES for complex analysis, and JOINS for combining multiple tables — all shown ...
Alex The Analyst on MSN

PostgreSQL case statements explained with simple examples

PostgreSQL CASE statements make it possible to add conditional logic directly into SQL queries, working similarly to IF ELSE statements in programming languages and spreadsheet tools. This tutorial us ...