Unit IV JOIN OPERATORS
Join Operators: Cross Join – Natural Join – Join USING Clause – JOIN ON Clause – Outer Join. Explain the above topic with definition and example table Here's a clear explanation of the SQL Join Operators with definitions and examples using simple tables: 🔗 1. Cross Join Definition: A Cross Join returns the Cartesian product of two tables. That means every row from the first table is combined with every row from the second table. It doesn't require any condition. Example: Table A – Employees EmpID Name 1 John 2 Alice Table B – Departments DeptID DeptName 10 HR 20 IT 📌 Syntax SELECT * FROM table1 CROSS JOIN table2; Query: SELECT * FROM Employees CROSS JOIN Departments; Result: EmpID Name DeptID DeptName 1 John 10 HR 1 John 20 IT 2 Alice 10 HR 2 Alice 20 IT 🔗 2. Natural Join Definition: A Natural Join automatically joins tables based on all columns with the same names and compatible d...
