Re: how does setval() work???

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От Oliver Elphick
Тема Re: how does setval() work???
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Msg-id 200101101632.f0AGW7N21365@linda.lfix.co.uk
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Ответ на how does setval() work???  (chris Günther <guenther@uscreen.de>)
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chris Gnther wrote:
  >database with the default values in the table I need to set my sequence
  >by hand using setval() I think. But I just can't figure out how this works.
  >
  >Can anyone give me an example???


bray=# create table junk (id serial, name text);
NOTICE:  CREATE TABLE will create implicit sequence 'junk_id_seq' for SERIAL
column 'junk.id'
NOTICE:  CREATE TABLE/UNIQUE will create implicit index 'junk_id_key' for
table 'junk'


bray=# insert into junk (name) values ('Fred');
INSERT 194510 1
bray=# select * from junk;
 id | name
----+------
  1 | Fred
(1 row)


bray=# select setval('junk_id_seq',5);
 setval
--------
      5
(1 row)

bray=# insert into junk (name) values ('Joe');
INSERT 194511 1
bray=# select * from junk;
 id | name
----+------
  1 | Fred
  6 | Joe
(2 rows)

--
Oliver Elphick                                Oliver.Elphick@lfix.co.uk
Isle of Wight                              http://www.lfix.co.uk/oliver
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      the coming of the Lord draweth nigh."
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