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Re: Inserting 'large' amounts of data

From: Maciek Sakrejda <msakrejda(at)truviso(dot)com>
To: John R Pierce <pierce(at)hogranch(dot)com>
Cc: pgsql-jdbc(at)postgresql(dot)org
Subject: Re: Inserting 'large' amounts of data
Date: 2009-08-27 00:03:44
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-jdbc
In the same manner as regular DML--you'll get a constraint violation:

cqdb=# create table foo(a int unique);
NOTICE:  CREATE TABLE / UNIQUE will create implicit index "foo_a_key"
for table "foo"
cqdb=# copy foo from stdin;
Enter data to be copied followed by a newline.
End with a backslash and a period on a line by itself.
>> 1
>> 1
>> 1
>> \.
ERROR:  duplicate key value violates unique constraint "foo_a_key"
CONTEXT:  COPY foo, line 2: "1"

(This is straight through psql, but essentially the same thing would
happen through jdbc).

Maciek Sakrejda | Software Engineer | Truviso
(650) 242-3500 Main
(650) 242-3501 F

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