title: How to reduce cost on select statement?
body: <p>I have a table in oracle 10g with around 51 columns and 25 Million number of records in it. When I execute a simple select query on the table to extract 3 columns I am getting the cost too high around 182k. So I need to reduce the cost effect. Is there any possible way to reduce it? </p>
  
  <p>Query: </p>
  
  <pre><code>select a,b,c
  from X
  </code></pre>
  
  <p>a - char <br>
  b - varchar2 <br>
  c - varchar2 <br></p>
  
  <p>TIA</p>