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Different SQL queries examples (including my solutions for challenges on Hackerrank.com, Datacamp.com, Codeacademy.com and others)

Name		Name	Last commit message	Last commit date
Latest commit History 19 Commits
Codeacademy.com - SQL Analyzing Business Metrics.sql		Codeacademy.com - SQL Analyzing Business Metrics.sql
Datacamp - Joining Data in PostgreSQL.sql		Datacamp - Joining Data in PostgreSQL.sql
HackerRank - 1 Basic Select.sql		HackerRank - 1 Basic Select.sql
HackerRank - 2 Advanced Select.sql		HackerRank - 2 Advanced Select.sql
README.md		README.md
countries2.zip		countries2.zip
diagrams.zip		diagrams.zip
leaders2.zip		leaders2.zip

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