I have one column named bill\_date with data type as timestamp without time zone. 

Now i want to search a record with the bill\_date. The user will enter date as like 2012-12-09.

I want to use Bill.find\_by\_bill\_date(2012-12-09).

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.