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From: Massimo Dal Zotto <dz@cs.unitn.it>

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This commit is contained in:
Marc G. Fournier
1998-08-30 21:05:27 +00:00
parent 6f3de1bb66
commit 6c4982851a
4 changed files with 295 additions and 117 deletions
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19
src/man/create_sequence.l
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@ -1,6 +1,6 @@
.\" This is -*-nroff-*-
.\" XXX standard disclaimer belongs here....
.\" $Header: /cvsroot/pgsql/src/man/Attic/create_sequence.l,v 1.5 1998/07/14 01:45:25 momjian Exp $
.\" $Header: /cvsroot/pgsql/src/man/Attic/create_sequence.l,v 1.6 1998/08/30 21:03:19 scrappy Exp $
.TH "CREATE SEQUENCE" SQL 07/13/98 PostgreSQL PostgreSQL
.SH NAME
create sequence - create a new sequence number generator
@ -82,6 +82,14 @@ given sequence in the current backend session. Also beware that it
does not give the last number ever allocated, only the last one allocated
by this backend.
.PP
The function
.BR setval
('sequence_name', value)
may be used to set the current value of the specified sequence.
The next call to
.BR nextval
will return the given value + the sequence increment.
.PP
Use a query like
.nf
SELECT * FROM <sequence_name>;
@ -134,6 +142,15 @@ select nextval ('seq');
-- Use sequence in insert
--
insert into table _table_ values (nextval ('seq'),...);
.nf
--
-- Set the sequence value after a copy in
--
create function table_id_max() returns int4
as 'select max(id) from _table_'
language 'sql';
copy _table_ from 'input_file';
select setval('seq', table_id_max());
.fi
.SH "SEE ALSO"
drop_sequence(l).

13
src/man/listen.l
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@ -1,6 +1,6 @@
.\" This is -*-nroff-*-
.\" XXX standard disclaimer belongs here....
.\" $Header: /cvsroot/pgsql/src/man/Attic/listen.l,v 1.7 1998/07/09 03:29:09 scrappy Exp $
.\" $Header: /cvsroot/pgsql/src/man/Attic/listen.l,v 1.8 1998/08/30 21:03:20 scrappy Exp $
.TH "LISTEN" SQL 03/12/94 PostgreSQL PostgreSQL
.SH NAME
listen - listen for notification on a relation
@ -27,16 +27,19 @@ in order to find out the name of the class to which a given
notification corresponds. If this code is not included in
the application, the event notification will be queued and
never be processed.
.PP
Note that
.IR class_name
needs not to be a valid class name but can be any ascii string up to 32
characters long. It must however be eclosed in double-quotes if it is
not valid as class name.
.SH "SEE ALSO"
create_rule(l),
notify(l),
select(l),
unlisten(l),
libpq.
.SH BUGS
There is no way to un-\c
.BR listen
except to drop the connection (i.e., restart the backend server).
.PP
The
.IR psql(1)
command does not poll for asynchronous events.