This is my code:
--this section creates/replaces the C_PND Procedure
--and passes 2variables
create or replace PROCEDURE C_PND
(
p_whse in varchar2,
p_RC OUT INT
)
--No clue what we're doing here as there is no DECLARE
as
cv SYS_REFCURSOR; -- cursor variable
v_pull_zone locn_hdr.pull_zone%TYPE;
v_active varchar2(1);
v_low_wm number(3);
v_high_wm number(3);
v_lock_code resv_locn_hdr.locn_putaway_lock%TYPE;
--initializes this variable
BEGIN
p_RC := 0;
--setting values of the the CV
OPEN cv FOR
select code_id,
nvl(trim(substr(sc.misc_flags,1,1)),'N') v_active,
nvl(trim(substr(sc.misc_flags,2,3)),'100') high_wm,
nvl(trim(substr(sc.misc_flags,5,3)),'0') low_wm,
trim(substr(sc.misc_flags,8,2)) lock_code
from sys_code sc
where sc.rec_type = 'C'
and sc.code_type = 'PND';
--inputting the CV into these variables
LOOP
FETCH cv INTO v_pull_zone, v_active, v_high_wm, v_low_wm, v_lock_code;
EXIT WHEN cv%NOTFOUND;
............
............
............
I think I understand most of it but my problem comes in with the five lines after the as (lines 6-11 of code snippet). I'm under the impression that anytime you use variables in PL SQL you have to DECLARE them. Even if you are using cursor variables.
Am I simply wrong about that? Or is there no need to DECLARE variables in use with CVs? I also included some comments (prefaced by --) that show what I think what the SQL is doing.
You are sort of right. You have to declare variables using DECLARE in an anonymous block as in:
DECLARE
...
BEGIN
...
END;
Your code is a procedure and the DECLARE is implicit after the
CREATE OR REPLACE xxx as
(implicit DECLARE)
BEGIN
...
END;
Related
printf('local_time_greeting');
Having some trouble getting a stored procedure to run with SQL Developer. Below is an example patterned exactly like the first few lines, with variable names changed for security reasons.
CREATE OR REPLACE PROCEDURE redacted ( an_in_variable IN VARCHAR ) AS
these VARCHAR;
variables VARCHAR;
don_apostrophe_t INT;
matter INT;
BEGIN
DECLARE cursor_giving_me_trouble CURSOR FOR
SELECT something FROM db.table WHERE condition_1 = condition_2;
...
In the editor the SELECT word is red-wavy-lined, and when I try to run the code the output returns
PLS-00103: Encountered symbol "FOR" when expecting one of the following := . ( # % ; not null range default character
Any ideas?
You need to use IS rather than FOR, but you have the terms of the definition in the wrong order as well:
DECLARE
CURSOR cursor_giving_me_trouble IS
SELECT something FROM db.table WHERE condition_1 = condition_2;
db<>fiddle which still errors because of the illegal object names in your obfuscated code, but not from the syntax; and a more complete example.
It's also possible you're trying to use the construct:
FOR cursor_giving_me_trouble IN (
SELECT something FROM db.table WHERE condition_1 = condition_2
) LOOP
...
rather than a sub-block (a new declare, followed by begin/end) with references only to cursor within that. db<>fiddle.
To get you started:
create or replace procedure redacted
( an_in_variable in varchar2 )
as
these varchar2(123);
variables varchar2(456);
don_apostrophe_t integer;
matter integer;
cursor cursor_giving_me_trouble is
select 'Welcome to PL/SQL' as whatever from dual where 1=1;
begin
for r in cursor_giving_me_trouble loop
dbms_output.put_line(r.whatever);
end loop;
end;
However, you often don't need a separate cursor definition as there is this compact syntax:
create or replace procedure redacted
( an_in_variable in varchar2 )
as
these varchar2(123);
variables varchar2(456);
don_apostrophe_t integer;
matter integer;
begin
for r in (
select 'Welcome to PL/SQL' as whatever from dual where 1=1
)
loop
dbms_output.put_line(r.whatever);
end loop;
end;
I have a fixed array of strings on which I want to operate. How should I declare them in stored procedure? Is it even possible?
CREATE OR REPLACE PROCEDURE testing AS
BEGIN
operations...
END;
Can we declare like DECLARE #v1 varchar(15); or something similar for collection of string?(PS "#" throwing error on Oracle SQL Developer )
A newbie in SQL, so expecting a sample code if possible thanks.
You can use this:
declare
type array_t is varray(3) of varchar2(2);
array array_t := array_t('aa', 'bb', 'cc');
begin
for i in 1..array.count loop
dbms_output.put_line(array(i));
end loop;
end;
I would like to declare and display a variable in Oracle.
In T-SQL I would do something like this
DECLARE #A VARCHAR(10) --Declares #A
SELECT #A = '12' --Assigns #A
SELECT #A --Displays #A
How can I do this in Oracle.
If you're talking about PL/SQL, you should put it in an anonymous block.
DECLARE
v_text VARCHAR2(10); -- declare
BEGIN
v_text := 'Hello'; --assign
dbms_output.Put_line(v_text); --display
END;
If using sqlplus you can define a variable thus:
define <varname>=<varvalue>
And you can display the value by:
define <varname>
And then use it in a query as, for example:
select *
from tab1
where col1 = '&varname';
If you are using pl/sql then the following code should work :
set server output on -- to retrieve and display a buffer
DECLARE
v_text VARCHAR2(10); -- declare
BEGIN
v_text := 'Hello'; --assign
dbms_output.Put_line(v_text); --display
END;
/
-- this must be use to execute pl/sql script
Make sure that, server output is on otherwise output will not be display;
sql> set serveroutput on;
declare
n number(10):=1;
begin
while n<=10
loop
dbms_output.put_line(n);
n:=n+1;
end loop;
end;
/
Outout:
1
2
3
4
5
6
7
8
9
10
Did you recently switch from MySQL and are now longing for the logical equivalents of its more simple commands in Oracle? Because that is the case for me and I had the very same question. This code will give you a quick and dirty print which I think is what you're looking for:
Variable n number
begin
:n := 1;
end;
print n
The middle section is a PL/SQL bit that binds the variable. The output from print n is in column form, and will not just give the value of n, I'm afraid. When I ran it in Toad 11 it returned like this
n
---------
1
I hope that helps
Is there a way to reuse the cursor declaration in postgres.
For example :
I have a function like below, I am trying to use the declaration of curs1 for curs2 is it possible ?
create or replace function vin_temp_test(k date,x varchar) RETURNS numeric[] AS $$
declare
curs1 CURSOR FOR select prod_name,sum(item_val) sum_value from temp_table group by prod_name;
curs2 cursor curs1;
begin
null
end;
$$ LANGUAGE plpgsql VOLATILE;
Directly it is not possible
but you can simplify code by using views
you can use dynamic unbound queries
DECLARE
c1 refcursor;
c2 refcursor;
sqlstr text;
BEGIN
sqlstr := 'SELECT ... ';
OPEN c1 FOR EXECUTE sqlstr;
OPEN c2 FOR EXECUTE sqlstr;
Important question is - what do you mean 'reuse a cursor'"?
Maybe you can use scrollable cursor with possible reset
There is a statement MOVE
MOVE FIRST IN curs1 -- reset cursor curs1
see http://www.postgresql.org/docs/9.3/static/plpgsql-cursors.html
I am a bit new to Oracle and PL SQL. I have a procedure like the following.
{
CREATE OR REPLACE PROCEDURE MyProcedure (MyRecordset OUT SYS_REFCURSOR)
AS
BEGIN
DECLARE
CURSOR MyRecordset IS
select
...
from table1, table2, etc..
BEGIN
FOR Record in MyRecordset
LOOP
--Do something
END LOOP; -- IMPLICIT CLOSE OCCURS
-- THIS IS WHERE I NEED TO RETURN THE CURSOR. DOES THIS NOT OPEN IT AT BEGINNING AGAIN?
OPEN MyRecordset;
END;
END MyProcedure;
/
}
I need to return a SYS_REFCURSOR. Is this sufficient? When I try to test it with the following in Toad I get no output in the data grid.
{
DECLARE
type result_set is ref cursor;
BEGIN
BIZTALK.GetCustomerPaymentsDebug(:result_set);
END;
}
This example works for me. I think it should help you.
Declare cursor like:
TYPE genCurType IS REF CURSOR;
PROCEDURE return_in
( p_ime IN VARCHAR2
, po_seznam OUT genCurType
, po_errid OUT errorIdType
, po_errmsg OUT errorMsgType
)
IS
cc_module_name CONSTANT VARCHAR2(60):= 'return_ins';
BEGIN
OPEN po_seznam FOR SELECT IME, OPIS, NAZIV, OBRAZEC
FROM test
WHERE upper(IME) = upper(p_ime);
EXCEPTION
WHEN OTHERS THEN
po_errid := SQLCODE;
po_errmsg := 'Poizvedba ni bila uspešna! ('||SQLERRM||''||gc_package||'.'||cc_module_name||')';
END;