Re: trouble with unique constraint - Mailing list pgsql-general

From A. Kretschmer
Subject Re: trouble with unique constraint
Date
Msg-id 20100211083552.GD10411@a-kretschmer.de
Whole thread Raw
In response to trouble with unique constraint  ("Khin, Gerald" <Gerald.Khin@ids-scheer.com>)
List pgsql-general
In response to Khin, Gerald :
> The following SQL leads to a unique constraint violation error message
> (PostgreSQL 8.4.1).
>
>
>
>
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> create table test (val integer);
>
>
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> create unique index test_uni on test(val);
>
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> insert into test (val) values (1);
>
> insert into test (val) values (2);
>
> insert into test (val) values (3);
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> update test set val = val + 1;

update test set val = val + 10;
update test set val = val -9;

Thats the only way now, but the upcoming new release 9.0 contains
deferrable unique constraints.

Andreas
--
Andreas Kretschmer
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