see, now that answers my question! I haven't done any work at all with object tables so I haven't seen any of this
thanks Arup! --- Arup Nanda <[EMAIL PROTECTED]> wrote: > In case of object tables, the constraints are defined on the most > primitive > of the objects. For instance, you have a table MYTAB defined on an > object > type MYTYPE1 which references in MYTYPE2. An attribute of MYTYPE2, > ATTR1 has > the constraint defined as not null. In this case the column_name in > dba_cons_columns will say "MYTAB"."MYTYPE1"."MYTYPE2" to show the > hierarchy. > Since each of these values could be 30 chars long, with the dots and > double > quotes, the column_name could easily be very long. Therefore, > VARCHAR2(4000). > > HTH > > Arup > > > > > > > >From: Rodd Holman <[EMAIL PROTECTED]> > >Reply-To: [EMAIL PROTECTED] > >To: Multiple recipients of list ORACLE-L <[EMAIL PROTECTED]> > >Subject: Re: this doesn't look right > >Date: Mon, 30 Dec 2002 14:53:56 -0800 > >MIME-Version: 1.0 > >Received: from newsfeed.cts.com ([209.68.248.164]) by > >mc9-f34.bay6.hotmail.com with Microsoft SMTPSVC(5.0.2195.5600); Mon, > 30 Dec > >2002 15:34:11 -0800 > >Received: from fatcity.UUCP (uucp@localhost)by newsfeed.cts.com > >(8.9.3/8.9.3) with UUCP id PAA46221;Mon, 30 Dec 2002 15:33:50 -0800 > (PST) > >Received: by fatcity.com (26-Feb-2001/v1.0g-b72/bab) via UUCP id > 0052468B; > >Mon, 30 Dec 2002 14:53:56 -0800 > >Message-ID: <[EMAIL PROTECTED]> > >X-Comment: Oracle RDBMS Community Forum > >X-Sender: Rodd Holman <[EMAIL PROTECTED]> > >Sender: [EMAIL PROTECTED] > >Errors-To: [EMAIL PROTECTED] > >Organization: Fat City Network Services, San Diego, California > >X-ListServer: v1.0g, build 72; ListGuru (c) 1996-2001 Bruce A. > Bergman > >Precedence: bulk > >Return-Path: [EMAIL PROTECTED] > >X-OriginalArrivalTime: 30 Dec 2002 23:34:11.0258 (UTC) > >FILETIME=[F4A239A0:01C2B05B] > > > >This still begs the question why varchar(4000) in the underlying > table > >if column names are only allowed to be 30? Is this table used for > other > >objects that can have a longer name? If so what? > > > >Rodd > > > >On Mon, 2002-12-30 at 16:08, Shaleen wrote: > > > Varchar2(4000) is coming from sys.attrcol$ table. dba_tab_columns > does > >not > > > have a join this table. I am sure there are people on this list > who'll > > > enlighten me about contents of sys.attrcol$ table. > > > > > > select u.name, c.name, o.name, > > > decode(ac.name, null, col.name, ac.name), cc.pos# > > > from sys.user$ u, sys.con$ c, sys.col$ col, sys.ccol$ cc, > sys.cdef$ > > > cd,sys.obj$ o, sys.attrcol$ ac > > > where c.owner# = u.user# > > > and c.con# = cd.con# > > > and cd.type# != 12 /* don't include log groups */ > > > and cd.con# = cc.con# > > > and cc.obj# = col.obj# > > > and cc.intcol# = col.intcol# > > > and cc.obj# = o.obj# > > > and col.obj# = ac.obj#(+) > > > and col.intcol# = ac.intcol#(+) > > > > > > -Shaleen > > > ----- Original Message ----- > > > To: "Multiple recipients of list ORACLE-L" <[EMAIL PROTECTED]> > > > Sent: Monday, December 30, 2002 12:23 PM > > > > > > > > > > As part of the process of making sure that null/not null > constraints > > > > are consistent across development/staging/production, I'm > looking at > > > > the dba_cons_columns table. > > > > > > > > Now, as far as I know, column_names are limited to 30 > characters, > > > > correct? If so, why is the column_name column in > dba_cons_columns > > > > (9.2.0.1) a varchar2(4000)? I realize that the "extra space" > isn't > >used > > > > and is never allocated so it's not like this is wasteful. > > > > > > > > But it's inconsistent with everything else, since > dba_tab_columns has > >a > > > > column_name column of varchar2(30). > > > > > > > > anyone know why this is like this? > > > > > > > > Rachel > > > > > > > > __________________________________________________ > > > > Do you Yahoo!? > > > > Yahoo! Mail Plus - Powerful. Affordable. Sign up now. > > > > http://mailplus.yahoo.com > > > > -- > > > > Please see the official ORACLE-L FAQ: http://www.orafaq.net > > > > -- > > > > Author: Rachel Carmichael > > > > 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 > >Rodd Holman > >[EMAIL PROTECTED] > > > >Romans 1:16-17 > > > > > >-- > >Please see the official ORACLE-L FAQ: http://www.orafaq.net > >-- > >Author: Rodd Holman > > 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). > > > _________________________________________________________________ > MSN 8: advanced junk mail protection and 3 months FREE*. > http://join.msn.com/?page=features/junkmail&xAPID=42&PS=47575&PI=7324&DI=7474&SU= > > http://www.hotmail.msn.com/cgi-bin/getmsg&HL=1216hotmailtaglines_advancedjmf_3mf > > -- > Please see the official ORACLE-L FAQ: http://www.orafaq.net > -- > Author: Arup Nanda > 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). > __________________________________________________ Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now. http://mailplus.yahoo.com -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Rachel Carmichael 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).
