Oracle Inner join | Inner Join - oracle tutorial - sql tutorial




Oracle inner join

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What is Oracle INNER JOINS ?

  • Oracle JOINS are used to retrieve data from multiple tables.
  • Oracle INNER JOINS return all rows from multiple tables where the join condition is met.
  • Oracle INNER JOIN (or sometimes called simple join).
 inner join

Syntax:

SELECT columns 
FROM table1 
INNER JOIN table2
ON table1.column = table2.column;
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Example:

SELECT wikitechy_employee.id, wikitechy_employee.name, orders.orderid
FROM wikitechy_employee
INNER JOIN orders
ON wikitechy_employee.id = orders.id;
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Sample Database:

  • We have a table called wikitechy_employee with four fields (id, name, position, and city). It contains the following data:
 employee table database
  • We have another table called orders with three fields (id, customer_name, and orderid).
 customer table database
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INNER JOIN:

 inner join command
  1. INNER JOIN example would return all rows from the wikitechy_employee and orders tables where there is a matching Id value in both the wikitechy_employee and orders tables.
  2. The rows of Indhu and Vinoth is displayed from the table since the id 333, 117 does exist in both the tables.

Oracle ALL Joins

Oracle join query

Oracle Join Query - Inner Join Query - Left Outer Join Query - Right Outer Join Query - Full Outer Join Query


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