Select into using parameters versus real values

Question

Can anyone please explain how PL/SQL operates in a condition where you pass in a value versus
hardcoding it ? When it's hard coded, I get a 1 row response and the correct information
When I pass in the value through the call statement, I get exact fetch returns more rows than requested number of rows. ORA - 01422
Here is the command line pl/sql --
declare
n_count number;
aa char(255);
bb char(255);
cc char(255);
begin
select vol_id, orig_id, incoming_msg
into aa, bb, cc
from
table_name where file_name ='123456'
and incoming_msg ='I';
n_count :=sql%rowcount;
DBMS_OUTPUT.Put_line ('sqlcode is' || sqlcode);
end;
sqlcode is 1.
The above returns one row ... which is what I want
Now if I wrap it to pass in the file_name That is where I get the fetch returns more rows.
create or replace procedure test(file_name IN VARCHAR2)
authid CURRENT_USER
IS
n_count number;
aa char(255);
bb char(255);
cc char(255);
begin
select vol_id, orig_id, incoming_msg
into aa, bb, cc
from
table_name where file_name =file_name
and incoming_msg ='I';
n_count :=sql%rowcount;
DBMS_OUTPUT.Put_line ('sqlcode is' || sqlcode);
end;
procedure is successfully created..
then
Call TEST('123456');
error at line 1p
ORA-10422: exact fetch returns more than requested number of rows
ORA -06512 at TEST, line 17
Line 17 is the select vol_id, orig_id, incoming_msg
into aa, bb, cc
so what is it about select and into in a procedure that causes this error ... AND how to get around it ?
Many Thanks in advance.

Answer 1

sgonos wrote:
Can anyone please explain how PL/SQL operates in a condition where you pass in a value versus
hardcoding it ? When it's hard coded, I get a 1 row response and the correct information
When I pass in the value through the call statement, I get exact fetch returns more rows than requested number of rows. ORA - 01422
Now if I wrap it to pass in the file_name That is where I get the fetch returns more rows.
create or replace procedure test(file_name IN VARCHAR2)
authid CURRENT_USER
IS
n_count number;
aa char(255);
bb char(255);
cc char(255);
begin
select vol_id, orig_id, incoming_msg
into aa, bb, cc
from
table_name where file_name =file_name
and incoming_msg ='I';
n_count :=sql%rowcount;
DBMS_OUTPUT.Put_line ('sqlcode is' || sqlcode);
end;
procedure is successfully created..
then
Call TEST('123456');
error at line 1p
ORA-10422: exact fetch returns more than requested number of rows
ORA -06512 at TEST, line 17
Line 17 is the select vol_id, orig_id, incoming_msg
into aa, bb, cc
so what is it about select and into in a procedure that causes this error ... AND how to get around it ?Perhaps this part...
where file_name =file_namewhich of course will be true for every row.
I would suggest you rename your parameter to p_file_name and have the SQL read:
where file_name = p_file_name