RE: Order of table_name resolution

From: Carle, William T (Bill), NLCIO <wcarle_at_att.com>
Date: Wed, 14 Mar 2001 07:08:56 -0800
Message-ID: <F001.002CC249.20010314055109@fatcity.com>

I don't think you can have a synonym that conflicts with a name in your own schema. For example, if scott has an employee table and you try "create synonym employee for mary.employee;", Oracle will give you an error "name is already used by an existing object."

Bill Carle
AT&T
Database Administrator
816-995-3922
wcarle_at_att.com

-----Original Message-----
Sent: Wednesday, March 14, 2001 7:00 AM

To:     Multiple recipients of list ORACLE-L
Subject:        Order of table_name resolution

Hi DBAs,

Can someone clarify/confirm on how Oracle determines what table to use in select statement?

For ex. If I am login as Scott and do the following:

SELECT * FROM employee;

Of course Oracle will use Scott.employee if it exist. If it does not exist but exist under another schema. Does
Oracle look at private synonyms then public synonyms or vice versa.

My guess is Oracle checks in this order. Please confirm or correct.

Check if table exist in current schema
Check private synonyms
Check public synonyms
3 strikes your out with an error.

Rick Cale, Science Applications International Corp. Phone:865-481-2198, fax:865-481-8555
e-mail: caler_at_saic.com

--

Please see the official ORACLE-L FAQ: http://www.orafaq.com
--

Author: Cale, Rick T (Richard)
INET: RICHARD.T.CALE_at_saic.com

Fat City Network Services    -- (858) 538-5051  FAX: (858) 538-5051
San Diego, California        -- Public Internet access / Mailing Lists
--------------------------------------------------------------------

To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
--

Please see the official ORACLE-L FAQ: http://www.orafaq.com
--

Author: Carle, William T (Bill), NLCIO
INET: wcarle_at_att.com

Fat City Network Services    -- (858) 538-5051  FAX: (858) 538-5051
San Diego, California        -- Public Internet access / Mailing Lists
--------------------------------------------------------------------