SQL LEFT OUTER JOIN

by

The LEFT OUTER JOIN returns the all records of left table and matching records of right table. When no match is found right table columns will be return with the null values.

Syntax:

SELECT columnList FROM table1 LEFT OUTER JOIN table2 ON table1.columnName = table2.columnName;

or

SELECT columnList FROM table1 LEFT JOIN table2 ON table1.columnName = table2.columnName;

Example:

SELECT P_ID, NAME, AMOUNT
 
FROM PERSONS
 
LEFT OUTER JOIN ORDERS
 
ON PERSONS.P_ID = ORDERS.PERSON_ID;

Output:

P_ID	NAME	AMOUNT
3	deepak	25000
3	deepak	23000
2	sandy	22000
2	sandy	30000
4	Ashish	-
1	jai	-

 
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