This archive contains the SQL used with the tutorial "RDBMS: Understanding SQL Joins" at
  https://www.streetinfo.lu/computing/website/programming/sql_joins.html

Files:
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departments.sql  SQL to create and fill the "departments" table
employees.sql    SQL to create and fill the "employees" table
manager.sql      SQL to alter the "employees" table (for the self joins examples)
joins.sql        SELECT queries (two tables joins and self joins examples)
