PHP/MS SQL - automatic formatting: varchar, datetime

Hi,

I want to change 2 default behaviors of ms-sql server within a connection.

1. All varchar (etc.) fields should be returned as UTF-8.
    I know about field attribute collation and convert function,
    but I want simple query like:
       SELECT * FROM table;
    to return all varchars as UTF-8, no matter how the fields were
    defined and which collation.

    In MySQL I execute: "SET NAMES 'utf-8';" after connecting to server
    In PgSQL I use native function: pg_set_client_encoding()

2. Default datetime format is sth like this: "Apr 20 2008 12:01PM"
    I just want all datetimes fields were returned as:
       "2008-04-20 12:01:02"
    I can do that with function convert() (style=20) but I want
    (as in question above) a simple query like:
       SELECT * FROM table;
    to return date and time formatted as described above.

    In MySQL and PgSQL the format "2008-04-20 12:01:02" is the default
    one.

Is it possible to do that? If yes, please tell me how can I do that?


Wladyslaw