Hi,
I intend to get some answer from postgres concerning if an update command
has altered some records in the database.
To do this I coded this function:
create or replace function upd_ok(text,text,text,text) returns integer
as '
declare
table alias for $1;
field alias for $2;
val1 alias for $3;
val2 alias for $4;
begin
execute ''update '' || quote_ident(table) || '' set '' ||
quote_ident(field) '' = '' || quote_literal(val1) ||
'' where '' || quote_ident(field) || '' = '' ||
quote_literal(val2);
if found then
raise notice ''ok'';
else
raise exception ''not found'';
end if;
return 1;
end;
'
language 'plpgsql';
---
This function takes four parameters for the update command and then warn the
user if the update command has performed any change. The problem is I tested
this function with tables, fields and values correct, and the function still
reports that no record was altered. Issuing the update manually the changes
are made. I think this is kind of strange, so I'm sending this to the list.
I am using postgresql version 7.2.3
If there are any unimplemented features, how else could I know if an update
command altered records?
Thanks in advance,
Enio
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