what is the value u see when you execute select max(b) from y; On Thu, Feb 18, 2010 at 1:33 PM, Gavin Towey <gto...@ffn.com> wrote:
> Reproduced in 5.1.43. Could not reproduce it in 5.0.66 > > > -----Original Message----- > From: Yang Zhang [mailto:yanghates...@gmail.com] > Sent: Wednesday, February 17, 2010 6:05 PM > To: mysql@lists.mysql.com > Subject: auto_increment weirdness > > Hi, for some reason, I have an auto_increment field that's magically > bumped up to the next biggest power of 2 after a big INSERT...SELECT > that inserts a bunch of tuples (into an empty table). Is this expected > behavior? I couldn't find any mention of this from the docs (using the > MySQL 5.4.3 beta). > > Small reproducible test case: > > First, generate some data: from bash, run "seq 30000 > /tmp/seq" > > Next, run this in mysql: > > create table x (a int auto_increment primary key, b int); > create table y (b int); > load data infile '/tmp/seq' into table y; > insert into x (b) select b from y; > show create table x; > > This will show auto_increment = 32768 instead of 30000. > > Is this a bug introduced in the beta? Has it been fixed in newer > releases? Couldn't find a mention in the bug database. Thanks in > advance. > -- > Yang Zhang > http://www.mit.edu/~y_z/ > > -- > MySQL General Mailing List > For list archives: http://lists.mysql.com/mysql > To unsubscribe: http://lists.mysql.com/mysql?unsub=gto...@ffn.com > > > This message contains confidential information and is intended only for the > individual named. If you are not the named addressee, you are notified that > reviewing, disseminating, disclosing, copying or distributing this e-mail is > strictly prohibited. Please notify the sender immediately by e-mail if you > have received this e-mail by mistake and delete this e-mail from your > system. E-mail transmission cannot be guaranteed to be secure or error-free > as information could be intercepted, corrupted, lost, destroyed, arrive late > or incomplete, or contain viruses. The sender therefore does not accept > liability for any loss or damage caused by viruses or errors or omissions in > the contents of this message, which arise as a result of e-mail > transmission. [FriendFinder Networks, Inc., 220 Humbolt court, Sunnyvale, CA > 94089, USA, FriendFinder.com > > -- > MySQL General Mailing List > For list archives: http://lists.mysql.com/mysql > To unsubscribe: http://lists.mysql.com/mysql?unsub=anan...@gmail.com > >
