In response to Khin, Gerald :
> The following SQL leads to a unique constraint violation error message
> (PostgreSQL 8.4.1).
>
>
>
>
>
> create table test (val integer);
>
>
>
> create unique index test_uni on test(val);
>
>
>
> insert into test (val) values (1);
>
> insert into test (val) values (2);
>
> insert into test (val) values (3);
>
>
>
> 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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