Urgent help needed- alias name in update statement

Hello,

In postgre, when i am trying to give alias name in update statement like
below -

---------------------------------
update mytable x
set x.name = 'asdf'
where x.no = 1
-------------------------------

is giving error - mytable is not having col x.

We have migrated code from oracle to postgre 8.4. Is there any solution
for this.
(functions were compiled without any compilation errors - now when we are
trying to run these we are getting problems)

Please help..

Venkat
=====-----=====-----=====
Notice: The information contained in this e-mail
message and/or attachments to it may contain
confidential or privileged information. If you are
not the intended recipient, any dissemination, use,
review, distribution, printing or copying of the
information contained in this e-mail message
and/or attachments to it are strictly prohibited. If
you have received this communication in error,
please notify us by reply e-mail or telephone and
immediately and permanently delete the message
and any attachments. Thank you