Thank you - what is the correct command???
Bob
----- Original Message -----
From: "Uwe C. Schroeder" <uwe@xxxxxxxxx>
To: <pgsql-general@xxxxxxxxxxxxxx>
Cc: "Bob Pawley" <rjpawley@xxxxxxx>
Sent: Thursday, November 10, 2005 3:34 PM
Subject: Re: Where
SELECT INTO xxxx
tries to create table xxxx
See: http://www.postgresql.org/docs/8.0/interactive/sql-selectinto.html
Why do you do the select into anyways? It does nothing.
If you try to update table pipe with the select result you have the wrong
command.
UC
On Thursday 10 November 2005 14:24, Bob Pawley wrote:
I am attempting to transfer the data in the fluid_id column of table
process into column fluid_id of table pipe.
This should happen only when column contain of table process holds the
value 'ip'.
Here is the command that I am having trouble with.
-------
create table process (fluid_id integer primary key, process varchar,
contain varchar);
create table pipe ( fluid_id integer not null, contain varchar);
create or replace function base() returns trigger as $$
begin
insert into pipe (fluid_id) values (new.fluid_id);
select * into pipe from process where contain = 'ip';
return null;
end;
$$ language plpgsql;
create trigger trig1 after insert on process
for each row execute procedure base();
insert into process (fluid_id, process, contain)
values ('2', 'water', 'ip');
-------------------
On inserting data this error comes back -
-------
ERROR: relation "pipe" already exists
CONTEXT: SQL statement "SELECT * INTO pipe from process where contain
=
'ip'" PL/pgSQL function "base" line 4 at SQL statement
------
Of course the table pipe does already exist - it is a permanent table.
Is the program looking for some other target?? Perhaps a temporary
table??
Or am I completely screwed up???
Bob
--
UC
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