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constraint problem

Author

Topic

sunsanvin
Master Smack Fu Yak Hacker

1274 Posts

Posted - 2007-05-14 : 03:05:02

Dear Folks,
I've two tables,(table014,table015)
column01 of table014 is a primary key, and column04 is the foriegnkey.
column02 of table015 is also foriegn key.

how can i update column01 of table014?

actually I've done this through enterprise manager, by disabling the enforcement of constraints.

how can i do this by using query? and what is the correct way of doing this?

thank you verymuch

Vinod
Even you learn 1%, Learn it with 100% confidence.

sunsanvin
Master Smack Fu Yak Hacker

1274 Posts

Posted - 2007-05-14 : 04:36:52

Friends,
I"m sorry, if i didn't provide proper information for you.

the column01 of table014 is a primary key , column004 of table014 and column02 of table015 are the foriegn keys. please tell me the correct way how can i update column01 of table014?

Vinod
Even you learn 1%, Learn it with 100% confidence.

LoztInSpace
Aged Yak Warrior

940 Posts

Posted - 2007-05-14 : 04:43:54

You should not update primary keys. Arguably immutability is one of the primary things about them.
You should

begin transaction
add a dummy row to table014 with your new PK
update column 2 of 15 to new PK
update column 4 of 14 to new PK
delete using original PK from 14
commit.

And then go through your data model and fix it up so it has proper primary keys and proper table/column names.

Kristen
Test

22859 Posts

Posted - 2007-05-14 : 05:11:01

"table014 table015"

Scary table names ...

... Table1 and Table2 I could have believed were "example names", 014 and 015 don't sound like examples though ...

Kristen

sunsanvin
Master Smack Fu Yak Hacker

1274 Posts

Posted - 2007-05-15 : 02:22:03

no no kiristen there are code names for our team, for each module, the suffix and prefix will change. we are very clear with this

Vinod
Even you learn 1%, Learn it with 100% confidence.

sunsanvin
Master Smack Fu Yak Hacker

1274 Posts

Posted - 2007-05-15 : 05:09:02

quote:
Originally posted by LoztInSpace

You should not update primary keys. Arguably immutability is one of the primary things about them.
You should

begin transaction
add a dummy row to table014 with your new PK
update column 2 of 15 to new PK
update column 4 of 14 to new PK
delete using original PK from 14
commit.

And then go through your data model and fix it up so it has proper primary keys and proper table/column names.

I didn't get you. how can i take another primary key?

Vinod
Even you learn 1%, Learn it with 100% confidence.

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