Yes, they keep saying that varchar may change in future releases, so use varchar2. Maybe they'll finally use it. But for what I don't know.
-----Original Message----- Sent: Wednesday, December 10, 2003 1:39 PM To: Multiple recipients of list ORACLE-L Raj, Jonathan 1. I have heard rumors that in other databases the VARCHAR performance isn't good. In fact, some people that are converting from other databases to Oracle are pleasantly surprised that Oracle handles VARCHAR well. 2. I have been curious about Oracle's statement that you should use VARCHAR2. If I was a suspicious person I would say that sounded like a vendor's attempt to encourage proprietary coding, but I'm not suspicious, no way. My point isn't that VARCHAR isn't there, of course it is, but if you were developing an application to sell and support on several different databases, you might consider CHAR as a safer bet. Dennis Williams DBA Lifetouch, Inc. [EMAIL PROTECTED] -----Original Message----- Sent: Wednesday, December 10, 2003 1:10 PM To: Multiple recipients of list ORACLE-L Oracle has varchar and varchar2 both ... <tfm> The VARCHAR2 subtypes below have the same range of values as their base type. For example, VARCHAR is just another name for VARCHAR2. STRING VARCHAR You can use these subtypes for compatibility with ANSI/ISO and IBM types. Note: Currently, VARCHAR is synonymous with VARCHAR2. However, in future releases of PL/SQL, to accommodate emerging SQL standards, VARCHAR might become a separate datatype with different comparison semantics. So, it is a good idea to use VARCHAR2 rather than VARCHAR. </tfm> http://download-west.oracle.com/docs/cd/B10501_01/appdev.920/a96624/03_types .htm#10824 HTH Raj ---------------------------------------------------------------------------- ---- Rajendra dot Jamadagni at nospamespn dot com All Views expressed in this email are strictly personal. QOTD: Any clod can have facts, having an opinion is an art ! -----Original Message----- Sent: Wednesday, December 10, 2003 1:55 PM To: Multiple recipients of list ORACLE-L DW> If your application is COBOL-based, using CHAR DW> simplifies things quite a bit. True enough. I'd forgotten about COBOL. The semantics of COBOL's PIC X fields match up pretty closely (exactly?) to SQL CHAR fields. DW> My understanding is that VARCHAR2 is not even a SQL standard The keyword VARCHAR2 is not in the standard, but a variable-length type is. I think the standard uses CHARACTER VARYING, or something like that. I don't have time to look it up right now. DB2 uses VARCHAR, without the "2". I'm not sure why Oracle is so outspoken against that same keyword. I'd be interested in finding out. Best regards, Jonathan Gennick --- Brighten the corner where you are **************************************************************************** ********** This e-mail message is confidential, intended only for the named recipient(s) above and may contain information that is privileged, attorney work product or exempt from disclosure under applicable law. If you have received this message in error, or are not the named recipient(s), please immediately notify corporate MIS at (860) 766-2000 and delete this e-mail message from your computer, Thank you. **************************************************************************** **********5 -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Jamadagni, Rajendra INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (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.net -- Author: DENNIS WILLIAMS INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (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). This e-mail, including attachments, may include confidential and/or proprietary information, and may be used only by the person or entity to which it is addressed. If the reader of this e-mail is not the intended recipient or his or her authorized agent, the reader is hereby notified that any dissemination, distribution or copying of this e-mail is prohibited. If you have received this e-mail in error, please notify the sender by replying to this message and delete this e-mail immediately. -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Michael Milligan INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (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).