Re: PostgreSQL 9.6: view based on sequence

2018-01-24 12:52 GMT+01:00 Enrico Pirozzi <e(dot)pirozzi(at)nbsgroup(dot)it>:
> Hi, I was doing a test on a 9.6 and I've seen a strange thing
>
> if I run
>
> create sequence test_sequence;
> create view v_test_sequence as select * from test_sequence;
>
> PostgreSQL creates a view based on the sequence and the strange thing is
> that, among the various fields that are created in the view,
> there is a field named sequence_name with datatype name.
>
> I've seen in the docs
> https://www.postgresql.org/docs/9.6/static/datatype-character.html
> and the datatype name should be reserved only for structures internal of PG.
>
> Does anyone help me?
>
> Enrico
>
>
>
> --
> Enrico Pirozzi
> e(dot)pirozzi(at)nbsgroup(dot)it
>
>

tmp1=# create sequence x;
CREATE SEQUENCE
Time: 69,857 ms
tmp1=# select * from x;
last_value | log_cnt | is_called
------------+---------+-----------
1 | 0 | f
(1 row)

Maybe what you want to do is

create view v_test_sequence as select nextval( 'test_sequence' );

Ciao.

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Vincenzo Romano - NotOrAnd.IT
Information Technologies
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