SQL LEFT OUTER JOIN

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 -