title: SQL Query Optimization Toad for Oracle
body: <p>I am executing a query which is like </p>
  
  <pre><code>select a.col1
    ,a.col2
    ,b.col1
    ,b.col2
    ,c.col1
    ,c.col2
    ,d.col1
    ,d.col2
    ,e.col1
    ,e.col2
  from table1 a,table2 b,table3 c,table4 d,table5 e
  where a.col = b.col 
    and b.col = c.col 
    and a.col = e.col
    and c.col = d.col
    and d.col = e.col
  </code></pre>
  
  <p>This query is taking a lot of time to execute. 
  I would like to know if there is any solution to optimize this query. 
  I am using Toad for Oracle to execute. </p>
  
  <p>Thank you in advance. </p>