Re: [ADMIN] inheritance question
On Mon, 19 Jul 2004, Tsirkin Evgeny wrote: > But this way i will touch both the schema AND data > And what i want is to change the schema ONLY. The use the ALTER TABLE table* ADD COLUMN syntax to alter the schema for table and its descendants. In general, SQL_INHERITANCE=false is primarily there for applications that were written for older versions of PostgreSQL. You probably should be using queries that use the ONLY keyword rather than relying on the guc variable. > On Sun, 18 Jul 2004, Stephan Szabo wrote: > > > On Tue, 13 Jul 2004, evgeny tsurkin wrote: > > > > > Hi All! > > > That probably was already asked thousand times > > > but i did not find an exact answer: > > > I want to have two tables the second one will have > > > all the columns from the first + some extra .The data > > > should be complittly separate .I was trying to use > > > inheritance and setted the SQL_INHERITANCE = false > > > to separate the data ,but when trying to add a column > > > to the father i have got an error: > > > ERROR: Attribute must be added to child tables too > > > what can i do ? > > > > Either don't use SQL_INHERITANCE=false, or specify that you want > > to act upon the entire tree using the older syntax which I think > > would look like ALTER TABLE first* add column ... > > (note the *) ---(end of broadcast)--- TIP 6: Have you searched our list archives? http://archives.postgresql.org
Re: [ADMIN] inheritance question
But this way i will touch both the schema AND data And what i want is to change the schema ONLY. Thanks On Sun, 18 Jul 2004, Stephan Szabo wrote: > On Tue, 13 Jul 2004, evgeny tsurkin wrote: > > > Hi All! > > That probably was already asked thousand times > > but i did not find an exact answer: > > I want to have two tables the second one will have > > all the columns from the first + some extra .The data > > should be complittly separate .I was trying to use > > inheritance and setted the SQL_INHERITANCE = false > > to separate the data ,but when trying to add a column > > to the father i have got an error: > > ERROR: Attribute must be added to child tables too > > what can i do ? > > Either don't use SQL_INHERITANCE=false, or specify that you want > to act upon the entire tree using the older syntax which I think > would look like ALTER TABLE first* add column ... > (note the *) > > > > ---(end of broadcast)--- > TIP 7: don't forget to increase your free space map settings > -- --- Evgeny. ---(end of broadcast)--- TIP 3: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to [EMAIL PROTECTED] so that your message can get through to the mailing list cleanly
Re: [ADMIN] inheritance question
On Tue, 13 Jul 2004, evgeny tsurkin wrote: > Hi All! > That probably was already asked thousand times > but i did not find an exact answer: > I want to have two tables the second one will have > all the columns from the first + some extra .The data > should be complittly separate .I was trying to use > inheritance and setted the SQL_INHERITANCE = false > to separate the data ,but when trying to add a column > to the father i have got an error: > ERROR: Attribute must be added to child tables too > what can i do ? Either don't use SQL_INHERITANCE=false, or specify that you want to act upon the entire tree using the older syntax which I think would look like ALTER TABLE first* add column ... (note the *) ---(end of broadcast)--- TIP 7: don't forget to increase your free space map settings
Re: [ADMIN] inheritance question
I am but that is what actually want : to be able to add a column to the first table and have the second to be added a coulumns automatically.The target is realy simple : i want to simplify management of the schema and thus be able to manage only parantes - children should be managed aoutomagically But the data is NOT the same! Isn't it the inheretence is all about - to inherit? On Fri, 16 Jul 2004, mike g wrote: > According to your posting below the second table will have all the > columns of the first table plus extra columns. If that is true then why > are you trying to add a column to your first table and not your second > table as well? > > On Tue, 2004-07-13 at 06:32, evgeny tsurkin wrote: > > Hi All! > > That probably was already asked thousand times > > but i did not find an exact answer: > > I want to have two tables the second one will have > > all the columns from the first + some extra .The data > > should be complittly separate .I was trying to use > > inheritance and setted the SQL_INHERITANCE = false > > to separate the data ,but when trying to add a column > > to the father i have got an error: > > ERROR: Attribute must be added to child tables too > > what can i do ? > > Thanks > > Evgeny. > > > > > > ---(end of broadcast)--- > > TIP 4: Don't 'kill -9' the postmaster > -- --- Evgeny. ---(end of broadcast)--- TIP 9: the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match
Re: [ADMIN] inheritance question
According to your posting below the second table will have all the columns of the first table plus extra columns. If that is true then why are you trying to add a column to your first table and not your second table as well? On Tue, 2004-07-13 at 06:32, evgeny tsurkin wrote: > Hi All! > That probably was already asked thousand times > but i did not find an exact answer: > I want to have two tables the second one will have > all the columns from the first + some extra .The data > should be complittly separate .I was trying to use > inheritance and setted the SQL_INHERITANCE = false > to separate the data ,but when trying to add a column > to the father i have got an error: > ERROR: Attribute must be added to child tables too > what can i do ? > Thanks > Evgeny. > > > ---(end of broadcast)--- > TIP 4: Don't 'kill -9' the postmaster ---(end of broadcast)--- TIP 4: Don't 'kill -9' the postmaster
