title: what is the difference between left join and left outer join?
body: <p>I have created 2 tables as</p>
  
  <pre><code>CREATE TABLE table1(customerName VARCHAR(20),custid NUMBER ,order_id NUMBER ,price NUMBER );
  CREATE TABLE table2(id NUMBER ,salary NUMBER );
  </code></pre>
  
  <p>Now, I tried to use the queries </p>
  
  <pre><code>SELECT t1.customername,t1.custid,t2.salary FROM table1 t1 left join table2 t2 ON t1.custid = t2.id;
  SELECT t1.customername,t1.custid,t2.salary FROM table1 t1 left outer join table2 t2 ON t1.custid = t2.id;
  </code></pre>
  
  <p>But I get the same output. Is there any difference between them internally in their working ? or are both same!?</p>