Обсуждение: Enabling --log-update
I need to track changes to my database while I'm doing a pg_dump. I've found a reference to do this http://www.arkeia.com/hotbackup/postgresql/ (see the second method). It states that I need to put my database in the "mode --log-update" I've tried to do this, but I keep getting an error saying that --log-update needs an argument. I can't find any documentation on this switch. Please help! If I can't get this working my next alternative is to use either http://gborg.postgresql.org/project/tablelog/projdisplay.php or http://gborg.postgresql.org/project/audittrail/projdisplay.php I need to have the database available while the dump is done. Thanks is advance Dan Hrabarchuk
No idea what that is but I have never heard of those flags. My guess is that is a hacked version of PostgreSQL. --------------------------------------------------------------------------- Dan Hrabarchuk wrote: > I need to track changes to my database while I'm doing a pg_dump. > > I've found a reference to do this > http://www.arkeia.com/hotbackup/postgresql/ (see the second method). > > It states that I need to put my database in the "mode --log-update" > > I've tried to do this, but I keep getting an error saying that > --log-update needs an argument. > > I can't find any documentation on this switch. Please help! > > If I can't get this working my next alternative is to use either > http://gborg.postgresql.org/project/tablelog/projdisplay.php or > http://gborg.postgresql.org/project/audittrail/projdisplay.php > > I need to have the database available while the dump is done. > > Thanks is advance > > Dan Hrabarchuk > > > ---------------------------(end of broadcast)--------------------------- > TIP 8: explain analyze is your friend > -- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610) 359-1001 + If your life is a hard drive, | 13 Roberts Road + Christ can be your backup. | Newtown Square, Pennsylvania 19073
Does anyone have a suggestion on the best way to migrate data between two slightly different tables? For example: Table A -------- id : integer name : string desc : string Table B -------- id : integer name : string date : date summary : string In this example, I would like to copy all the data from Table A into B, using the desc column to populate the summary column. Thanks, Mike
One sql statement can solve this: sql> isnert into table_b (id, name, summary) select id, name, desc from table_a; Banghe Mike Darretta wrote: > Does anyone have a suggestion on the best way to migrate data between > two slightly different tables? For example: > > Table A > -------- > id : integer > name : string > desc : string > > > Table B > -------- > id : integer > name : string > date : date > summary : string > > In this example, I would like to copy all the data from Table A into > B, using the desc column to populate the summary column. > > Thanks, > Mike > > > > ---------------------------(end of broadcast)--------------------------- > TIP 1: subscribe and unsubscribe commands go to majordomo@postgresql.org >
banghe wrote: > One sql statement can solve this: > > sql> isnert into table_b (id, name, summary) select id, name, desc > from table_a; > > Banghe > > Mike Darretta wrote: > >> Does anyone have a suggestion on the best way to migrate data between >> two slightly different tables? For example: >> >> Table A >> -------- >> id : integer >> name : string >> desc : string >> >> >> Table B >> -------- >> id : integer >> name : string >> date : date >> summary : string >> >> In this example, I would like to copy all the data from Table A into >> B, using the desc column to populate the summary column. >> >> Thanks, >> Mike >> >> >> >> ---------------------------(end of broadcast)--------------------------- >> TIP 1: subscribe and unsubscribe commands go to majordomo@postgresql.org >> > > Thanks. I figured it was simple...
Whoever wrote the Arkeia pages was very confused. I've communicated with them previously, but no one was home. My understanding is that those are MySQL flag settings, not PostgreSQL. Whatever, they certainly don't work with PostgreSQL. "Tracking changes" while you do a dump is exactly what PITR does in v8.0, now in beta. Best Regards, Simon Riggs > -----Original Message----- > From: pgsql-admin-owner@postgresql.org > [mailto:pgsql-admin-owner@postgresql.org]On Behalf Of Bruce Momjian > Sent: 05 October 2004 02:59 > To: Dan Hrabarchuk > Cc: pgsql-admin@postgresql.org > Subject: Re: [ADMIN] Enabling --log-update > > > > No idea what that is but I have never heard of those flags. My guess is > that is a hacked version of PostgreSQL. > > ------------------------------------------------------------------ > --------- > > Dan Hrabarchuk wrote: > > I need to track changes to my database while I'm doing a pg_dump. > > > > I've found a reference to do this > > http://www.arkeia.com/hotbackup/postgresql/ (see the second method). > > > > It states that I need to put my database in the "mode --log-update" > > > > I've tried to do this, but I keep getting an error saying that > > --log-update needs an argument. > > > > I can't find any documentation on this switch. Please help! > > > > If I can't get this working my next alternative is to use either > > http://gborg.postgresql.org/project/tablelog/projdisplay.php or > > http://gborg.postgresql.org/project/audittrail/projdisplay.php > > > > I need to have the database available while the dump is done. > > > > Thanks is advance > > > > Dan Hrabarchuk > > > > > > ---------------------------(end of broadcast)--------------------------- > > TIP 8: explain analyze is your friend > > > > -- > Bruce Momjian | http://candle.pha.pa.us > pgman@candle.pha.pa.us | (610) 359-1001 > + If your life is a hard drive, | 13 Roberts Road > + Christ can be your backup. | Newtown Square, > Pennsylvania 19073 > > ---------------------------(end of broadcast)--------------------------- > TIP 1: subscribe and unsubscribe commands go to majordomo@postgresql.org