title: Replace double quote with single quote using laravel select query
body: <p>I am using laravel to get data from my database
  where i required to get the instruction with single quote
  Means wants to replace double quote with single quote wherever the double quote is used.
  I am new to laravel, i know query structure of MySql and understanding laravel so any suggestion will be helpful for me.</p>
  
  <p><strong>Edited</strong></p>
  
  <p>An example of MySql Query is as below, I wants something like this in laravel</p>
  
  <pre><code>select replace(col_instruction,'"',"'") from mytable
  </code></pre>