title: Typecasting in Rails finder methods
body: <p>I have one column named bill_date with data type as timestamp without time zone. </p>
  
  <p>Now i want to search a record with the bill_date. The user will enter date as like 2012-12-09.</p>
  
  <p>I want to use Bill.find_by_bill_date(2012-12-09).</p>
  
  <p>The above one will not give result. Because We have to do typecasting. Please give me some suggestions. I don't want to use where clause or conditions. I want to use find_by only.</p>