Oracle EQUI JOIN
نشر بواسطة : Obay Salah , December 2, 2024
Oracle Equi join returns the matching column values of the associated tables. It uses a comparison operator in the WHERE clause to refer equality.
Syntax
SELECT column_list FROM table1, table2.... WHERE table1.column_name = table2.column_name;
Equijoin also can be performed by using JOIN keyword followed by ON keyword and then specifying names of the columns along with their associated tables to check equality.
Syntax
SELECT * FROM table1 JOIN table2 [ON (join_condition)]
Oracle EQUI JOIN Example
Let' take two tables "agents" and "customer".
Agents table
Agent data
Customer table
Customer data
Execute this query
SELECT agents.agent_city,customer.last_name, customer.first_name FROM agents,customer WHERE agents.agent_id=customer.customer_id;
Output
Comments
لايوجد تعليق حتى الان