> -----Original Message-----
> On Thu, Nov 06, 2003 at 09:59:41AM -0800, Wan, Wenhua wrote:
> > Hi there,
> >
> > Both Oracle and Informix use ROWID to uniquely represent the location of
> > each row of data in a table. ROWID is basically a hidden column or
> > pseudocolumn for each table, and it is the fastest way to retrive a row
> from
> > a table. Does MySql have similar field? If is, what's the name and how
> to
> > access it?
> >
> > Thank you very much in advance for your advice.
>
> http://www.mysql.com/doc/search.php?q=rowid
>
Ok, so that search produces this:
" If the PRIMARY or UNIQUE key consists of only one column and this is of type
integer, you can also refer to it as _rowid (new in Version 3.23.11)."
But that's not what a "ROWID" is compared to what I think the original poster
was looking for. In Oracle for example, a ROWID is the unique address of a row
in the database. Every row, unique key or not has a unique address. Is there
such a thing in MySQL? ROWIDs are extremely useful for guaranteeing that you
are manipulating the exact row that you think you are.
Mike
----------------------------------------------------------------------
Michael Brando
Senior Manager of Engineering
Applied Biosystems
3833 North First Street
San Jose, CA 95134-1701
