auto_increment is only allowed on primary-keyed columns. I expect it is not allowing you to drop the primary key because that column has the auto_increment attribute. Drop that manually, and the primary key should be able to let go.
- md On Tue, Aug 10, 2010 at 5:58 PM, Nunzio Daveri <nunziodav...@yahoo.com> wrote: > Hi Micheal and all, ok so I did some digging around and I still can't find > why I cant drop the last few indexes. > > mysql> SELECT COUNT(1) FROM INFORMATION_SCHEMA.STATISTICS WHERE table_schema > = 'db_Market' AND table_name = 'dbt_Fruit' and index_name = 'PRIMARY'; > +----------+ > | COUNT(1) | > +----------+ > | 1 | > +----------+ > 1 row in set (0.00 sec) > > mysql> DESCRIBE dbt_Fruit; > +------------------+------------------+------+-----+---------+----------------+ > | Field | Type | Null | Key | Default | > Extra | > +------------------+------------------+------+-----+---------+----------------+ > | dbf_UID | int(10) unsigned | NO | PRI | NULL | > auto_increment | > | dbf_Vendor | varchar(30) | NO | | > | | > | dbf_Code | varchar(30) | NO | | > | | > | dbf_Notes | text | YES | | NULL > | | > +------------------+------------------+------+-----+---------+----------------+ > > mysql> ALTER TABLE dbt_Fruit DROP FOREIGN KEY dbf_UID; > Query OK, 2947 rows affected (0.05 sec) > Records: 2947 Duplicates: 0 Warnings: 0 > > mysql> ALTER TABLE dbt_Fruit DROP PRIMARY KEY; > ERROR 1075 (42000): Incorrect table definition; there can be only one auto > column and it must be defined as a key > > mysql> ALTER TABLE dbt_Fruit DROP PRIMARY; > ERROR 1064 (42000): You have an error in your SQL syntax; check the manual > that corresponds to your MySQL server version for the right syntax to use > near '' at line 1 > > > Any ideas??? I am wondering if it has something to do with the fact that > dbf_UID is a primary AND auto_increment? > > TIA... > > Nunzio > > > > ________________________________ > From: Michael Dykman <mdyk...@gmail.com> > To: Nunzio Daveri <nunziodav...@yahoo.com> > Cc: Anirudh Sundar <sundar.anir...@gmail.com>; mysql@lists.mysql.com > Sent: Tue, August 10, 2010 4:10:37 PM > Subject: Re: Dropping ALL indexes from a database / not just a table? > > It's not a completely solution and will need some tweaking.. You > might have to run the PRIMARY KEYS distinctly from the rest. > > - michael dykman > > > On Tue, Aug 10, 2010 at 4:43 PM, Nunzio Daveri <nunziodav...@yahoo.com> > wrote: >> Hello Michael, thanks for the one liner. I ran it BUT I started to get >> errors after I ran it the first time, this is what I got the 2nd time I >> ran >> it (first time I ran it I had 63 rows in the query, the 2nd time I have >> 9). >> I ran it twice to make sure it got rid of the indexed. I verified the >> index >> size dropped from 850 mb to 65 mb. >> >> >> +-------------------------------------------------------------------------+ >> | concat('ALTER TABLE ', TABLE_NAME, ' DROP INDEX ', CONSTRAINT_NAME,';') >> | >> >> +-------------------------------------------------------------------------+ >> | ALTER TABLE dbt_Fruits DROP INDEX PRIMARY; | >> | ALTER TABLE dbt_Veggies DROP INDEX PRIMARY; >> | >> . >> . >> . >> | ALTER TABLE dbt_Logs DROP INDEX >> PRIMARY; | >> >> +-------------------------------------------------------------------------+ >> 9 rows in set (0.01 sec) >> >> mysql> ALTER TABLE dbt_Fruits DROP INDEX PRIMARY; >> ERROR 1064 (42000): You have an error in your SQL syntax; check the manual >> that corresponds to your MySQL server version for the right syntax to use >> near 'PRIMARY' at line 1 >> mysql> ALTER TABLE dbt_Logs DROP INDEX PRIMARY; >> ERROR 1064 (42000): You have an error in your SQL syntax; check the manual >> that corresponds to your MySQL server version for the right syntax to use >> near 'PRIMARY' at line 1 >> mysql> >> >> Thanks again... >> >> Nunzio >> ________________________________ >> From: Michael Dykman <mdyk...@gmail.com> >> To: Nunzio Daveri <nunziodav...@yahoo.com> >> Cc: Anirudh Sundar <sundar.anir...@gmail.com>; mysql@lists.mysql.com >> Sent: Tue, August 10, 2010 3:17:48 PM >> Subject: Re: Dropping ALL indexes from a database / not just a table? >> >> This should give you a good starting point (not tested): >> >> select distinct concat('ALTER TABLE ', TABLE_NAME, ' DROP INDEX ', >> CONSTRAINT_NAME,';') >> from information_schema.key_column_usage where >> TABLE_SCHEMA='<mydatabase>'; >> >> - md >> >> On Tue, Aug 10, 2010 at 10:43 AM, Nunzio Daveri <nunziodav...@yahoo.com> >> wrote: >>> Thanks for the feedback. What I am trying to do is two things: >>> >>> 1. Remove all indexes and make the database smaller to copy and move to >>> another >>> prod box. Currently my indexes are in the double digit GB! Yikes ;-) >>> >>> 2. Remove all indexes so I can find out which ones are needed then tell >>> mysql to >>> recreate them and apparently it lessen data fragmentation if it starts >>> from >>> scratch vs. turning on and off. >>> >>> I was hoping to just remove all and then start from scratch so I know the >>> data >>> is not fragmented on the drives. >>> >>> Thanks again... >>> >>> Nunzio >>> >>> >>> >>> >>> ________________________________ >>> From: Anirudh Sundar <sundar.anir...@gmail.com> >>> To: Nunzio Daveri <nunziodav...@yahoo.com> >>> Cc: mysql@lists.mysql.com >>> Sent: Tue, August 10, 2010 1:06:41 AM >>> Subject: Re: Dropping ALL indexes from a database / not just a table? >>> >>> Hello Nunzio, >>> >>> Instead of Dropping a index, you can disable the indexes and get the work >>> done >>> and re-enable them. >>> >>> If you are ok with this then run the below as a shell script :- >>> >>> MUSER="username" >>> MPASS="password" >>> DATABASE="dbname" >>> >>> for db in $DATABASE >>> do >>> echo "starting disabling indexes for database -- $db" >>> echo "----------------------------------------------------------" >>> TABLES=`mysql -u $MUSER -p$MPASS $db -e "show tables"` >>> for table in $TABLES >>> do >>> mysql -u $MUSER -p$MPASS $db -e "Alter table $table disable keys" >>> done >>> >>> echo "completed disabling indexes for database -- $db" >>> done >>> >>> Cheers, >>> Anirudh Sundar >>> >>> >>> >>> On Tue, Aug 10, 2010 at 1:33 AM, Nunzio Daveri <nunziodav...@yahoo.com> >>> wrote: >>> >>> Hello Gurus, is there a way / script that will let me DROP ALL the >>> indexes >>> in a >>>>single database? for example, lets say my database is call db_Animals, >>>> and >>>>inside db_Animals there are 97 tables, is there a SINGLE command or a >>>> perl >>>>script of some kind that can read all the MYI files, remove the .MYI from >>>> the >>>>file name then proceed to deleting whatever indexes it finds? I am doing >>>> this >>>>to debug a server that seems to be slow and sluggish. After I am done >>>> deleting >>>>I will review the slow query logs and then re-index to get the best >>> performance? >>>> >>>>TIA... >>>> >>>>Nunzio >>>> >>>> >>>> >>>> >>> >>> >>> >>> >> >> >> >> -- >> - michael dykman >> - mdyk...@gmail.com >> >> May the Source be with you. >> >> > > > > -- > - michael dykman > - mdyk...@gmail.com > > May the Source be with you. > > -- - michael dykman - mdyk...@gmail.com May the Source be with you. -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/mysql?unsub=arch...@jab.org