Search Postgresql Archives

Re: bulk insert unique contraint

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 12/30/2013 8:14 AM, Janek Sendrowski wrote:
Hi,

I want to insert data in my table and I want to insert the rows, which don't violates the unique contraint of my id. I'm using a 64bit hash for my it.
If I do one insert statement, which inserts many rows it doesn't do anything if one row violates the unique contraint.
Is there a faster way than using multiple insert statements?

Janek



You could:

create table junk (like main);
copy to junk ...;
create index junkpk on junk(uid);
-- _not_ a unique index, optional
analyze junk;
select uid, count(*) from junk group by uid;
-- do something about the dups
insert into main select * from junk;
drop table junk;

-Andy


--
Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-general




[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [Postgresql Jobs]     [Postgresql Admin]     [Postgresql Performance]     [Linux Clusters]     [PHP Home]     [PHP on Windows]     [Kernel Newbies]     [PHP Classes]     [PHP Books]     [PHP Databases]     [Postgresql & PHP]     [Yosemite]
  Powered by Linux