public override bool CreateLiteralSql(ref Data.DataHolder holder)
{
    //If there is no value, then we want to query against null.
    if (holder.NoValue)
    {
        holder.StringValue = "NULL";

        //returning false indicates that no quotes are required. We want NULL instead of 'NULL'
        return false;
    }
    else
    {
        //convert the int value into a string, since that is what we are storing it as in the db
        holder.StringValue = holder.Int32Value.ToString();

        // return true indicates that quotes are needed around the value
        return true;
    }
}