|
Hi,
When I write in psql:
testdb=# update table1 set tableattribute='any'
where table_nr=1;
if a tuple exists, I get this
message
testdb=# update 1
if no tuple with table_nr=1
exists, I get this message
testdb=# update 0
Is there a possibility to make a difference in a
pgsql function like this:
create function updTable(text,integer) returns int
AS
'DECLARE
msg ALIAS FOR $1;
nr ALIAS FOR
$2;
BEGIN
update table1 set
tableattribute=msg where table_nr=nr;
--pseudocode
if update = 0
then
return
0;
else
return
1;
end
if;
END;
'language 'plpgsql';
or for a function, which inserts data:
create function insTable(text,integer) returns int
AS
'DECLARE
msg ALIAS FOR $1;
nr ALIAS FOR
$2;
BEGIN
insert into table1 values
(nr,msg);
--pseudocode
if error= cannot insert
duplicate key.....then
return
0;
else
return
1;
end
if;
END;
'language 'plpgsql';
I want to know the result of an insert or update, because I call these
functions from an Access form and the next steps of the program depend on
these results.
I hope, someone can help me, because I didn't find anything in the docu or
mailing list.
Thanks in advance
Irina
E-Mail: [EMAIL PROTECTED]
|
