Am 07.01.2018 um 07:17 schrieb Dani:
> Hi! All!
>
> I Need create a one decimal serial column or simulate it with multiple
> columns of bigint.
>
> gaps don't are problem.
>
> pseudo-code:
>
> create table bank (
> id0 decimal( 500, 0) not null auto-increment,
> etc text
> )
>
> or
>
> create table bank (
> id0 bigint not null,
> id1 bigint not null,
> id2 bigint not null,
> idn bigint not null,
> etc text
> primary key(id0, id1, id2, idn),
> auto_increment(id0, id1, id2, idn)
> )
>
> How a example of behavior (using a range of 1 .. 3)
>
> insert into bank(etc) Values "3*3*3 times 'Thanks'";
>
> select * from bank;
>
> id0 id1 id2 idn text
> 1 1 1 1 T
> 1 1 1 2 T
> 1 1 1 3 T
> 1 1 2 1 T
> 1 1 2 2 T
> 1 1 2 3 T
> 1 1 3 1 T
> 1 1 3 2 T
> 1 1 3 3 T
> 1 2 1 1 T
> etc.
Not sure if i understand you, but maybe you are looking for somethink
like this:
test=*# select s, (s/9)%3 as "3^2", (s/3)%3 as "3^1", s%3 as "3^0" from
generate_series(0,20) s;
s | 3^2 | 3^1 | 3^0
----+-----+-----+-----
0 | 0 | 0 | 0
1 | 0 | 0 | 1
2 | 0 | 0 | 2
3 | 0 | 1 | 0
4 | 0 | 1 | 1
5 | 0 | 1 | 2
6 | 0 | 2 | 0
7 | 0 | 2 | 1
8 | 0 | 2 | 2
9 | 1 | 0 | 0
10 | 1 | 0 | 1
11 | 1 | 0 | 2
12 | 1 | 1 | 0
13 | 1 | 1 | 1
14 | 1 | 1 | 2
15 | 1 | 2 | 0
16 | 1 | 2 | 1
17 | 1 | 2 | 2
18 | 2 | 0 | 0
19 | 2 | 0 | 1
20 | 2 | 0 | 2
(21 rows)
test=*#
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