I created this procedure in order to join two tables and select data. The base sql statement works as intended
CREATE OR REPLACE PROCEDURE task1
(p_task1 OUT SYS_REFCURSOR)
AS
BEGIN
OPEN p_task1 FOR
SELECT Department.D#, Department.DNAME, Employee.D#, Employee.Name
FROM Department JOIN Employee ON
Employee.D# = Department.D#;
END task1;
/
However, when I use the command EXECUTE task1 in SQL*Plus, I receive this error:
SQL> EXECUTE task1;
BEGIN task1; END;
*
ERROR at line 1:
ORA-06550: line 1, column 7:
PLS-00306: wrong number or types of arguments in call to 'TASK1'
ORA-06550: line 1, column 7:
PL/SQL: Statement ignored
I did some research into the error and its linked to parameters but im unsure what parameters i need, I didn't even intend on coding my procedure to take a parameter.
You have an OUT parameter... but still a parameter, in you procedure you have declared the parameter as
(p_task1 OUT SYS_REFCURSOR)
So when you call task1 you need to provide a location for it to put the output (OUT parameter)
so in your terminal you would have something along the lines of the below....
execute declare ref_cur SYS_REFCURSOR; begin task1(ref_cur); end;
In the above line we have added declare ref_cur SYS_REFCURSOR; which allows you to access the data the procedure fetches.
However a this stage you are just fetching the data and then doing nothing with it. Once retrieved you will need to iterate through the ref_cursor and do whatever it is you need to do with it.
Related
I am working with Oracle SQL Developer and I am trying get the below code to work and just can't figure it out. I have tried multiple different methods including implementing for loops, execute immediate's, scheduling and recompiling.
BEGIN
ORDER_STATUS_1_DROP_TABLE; -- If the table exist, drop it
ORDER_STATUS_2_CREATE_TABLE; -- Create the table
GRANT_NEWANALYTICS; -- Grant users select access
ORDER_STATUS_3_SCRIPT; -- Run script to insert data into table
END;
What the code is trying to do is this:
Procedure 1: Drop if exist, otherwise skip. I don't want to see any warning errors stating that no table exist if this procedure is run when there is no table. This procedure by itself does work as intended.
create or replace PROCEDURE ORDER_STATUS_1_DROP_TABLE IS
table_does_not_exist EXCEPTION;
PRAGMA EXCEPTION_INIT(table_does_not_exist, -942);
BEGIN
EXECUTE IMMEDIATE 'DROP TABLE <Table Name>';
EXCEPTION
WHEN table_does_not_exist then
dbms_output.put_line( 'table dose not exist');
END ORDER_STATUS_1_DROP_TABLE;
Procedure 2: Once the table is dropped, this procedure recreates it with the correct . I don't want to see any errors for "this table already exist" and that is why, in part, procedure 1 exists. This by itself works as intended.
create or replace PROCEDURE ORDER_STATUS_2_CREATE_TABLE IS
v_sql LONG;
BEGIN
v_sql:= 'create table <Table Name>
(<parameters>)';
EXECUTE IMMEDIATE v_sql;
END ORDER_STATUS_2_CREATE_TABLE;
Procedure 3: This just gives users select access to the table created in the last procedure. This procedure works as it was intended.
create or replace PROCEDURE GRANT_NEWANALYTICS IS
BEGIN
EXECUTE IMMEDIATE
'GRANT SELECT ON <Table Name> TO <UserID>';
END;
Procedure 4: This is a complicated query. It is an insert select all from (table left join to a few other tables based upon fields and conditions, etc). After procedures 1-3 are run, this procedure by itself has not issue running, but by itself.
create or replace PROCEDURE ORDER_STATUS_3_SCRIPT IS
BEGIN
DELETE FROM <Table Name>;
INSERT INTO <Table Name>
SELECT * FROM(<Multiple Table Joins>);
END ORDER_STATUS_3_SCRIPT;
When I run the procedures like this:
BEGIN
ORDER_STATUS_1_DROP_TABLE; -- If the table exist, drop it
ORDER_STATUS_2_CREATE_TABLE; -- Create the table
GRANT_NEWANALYTICS; -- Grant users select access
ORDER_STATUS_3_SCRIPT; -- Run script to insert data into table
END;
I get the following error report:
Error report -
ORA-04068: existing state of packages has been discarded
ORA-04065: not executed, altered or dropped stored procedure "<user>.ORDER_STATUS_3_SCRIPT"
ORA-06508: PL/SQL: could not find program unit being called: "<user>.ORDER_STATUS_3_SCRIPT"
ORA-06512: at line 5
04068. 00000 - "existing state of packages%s%s%s has been discarded"
*Cause: One of errors 4060 - 4067 when attempt to execute a stored procedure.
*Action: Try again after proper re-initialization of any application's state.
Now, If I run these separately, it works. So if I first run this:
BEGIN
ORDER_STATUS_1_DROP_TABLE; -- If the table exist, drop it
ORDER_STATUS_2_CREATE_TABLE; -- Create the table
GRANT_NEWANALYTICS; -- Grant users select access
END;
<OUTPUT> PL/SQL procedure successfully completed.
And then this:
BEGIN
ORDER_STATUS_3_SCRIPT; -- Run script to insert data into table
END;
<OUTPUT> <Query runs>
I have not issues. I want to run these set of procedures in ones sweep and could use some help on the idea of such. Anyone have any ideas?
If you want to run all these procedures as a part of a single PL/SQL block then every reference to your table would need to be via dynamic SQL. So ORDER_STATUS_3_SCRIPT would need to use dynamic SQL to build the insert statement(s) to populate the table rather than using simple static SQL. That's obviously possible but it does increase the complexity of the script. Potentially substantially.
Having two PL/SQL blocks, which you've demonstrated works, seems much simpler.
I am working on a Netezza SP and is stuck with a problem.
I have a SP, defined as say:
CREATE OR REPLACE PROCEDURE MY_PROC(VARCHAR(ANY)) RETURNS INTEGER LANGUAGE NZPLSQL
AS
BEGIN_PROC
DECLARE
v_temp ALIAS FOR $1;
/* Other decalarations */
result_ts INTEGER;
BEGIN
result_ts := 0;
/* Procedure Body */
RETURN result_ts;
EXCEPTION WHEN OTHERS THEN
RAISE NOTICE 'Exception Raised: %', SQLERRM;
END;
END_PROC;
If I am running this SP with one value, such as:
SELECT MY_PROC('TEST_INPUT');
But if I am trying to run it with a column value, such as:
SELECT MY_PROC(TEST_COLUMN) FROM TEST_TABLE;
Its giving me error as:
ERROR: Can't use a stored procedure in this context
I know that in the second scenario I am passing an Array (i guess) but this is not what the Procedure has expected.
Now I am trying to have a procedure that can accept these kind of values but could not succeeded so far, LOOPing and all I have taken care but only problem is the Argument which I don't know how to pass.
Any help would be appreciated, let me know if I need to provide any extra info on this.
Asif
Stored procedures in Netezza, as of v7.2, can only be called in the following ways, as documented here.
CALL sproc_name(...);
EXEC sproc_name(...);
SELECT sproc_name(...);
Note that the SELECT form does not allow a FROM clause.
If you want the stored procedure to act on a particular column from a particular table that changes from invocation to invocation, you could pass the names of those as arguments to the stored procedure and have the entirety of the SQL logic encoded within. You could even pass arbitrary code into the stored procedure to build a query internally.
The way you are trying to call it now is more like calling a user defined function, and that simply won't work with stored procedures here.
Problem that I was facing is that I have to call one stored procedure from another stored procedure in DB2 database. Kind example that I am giving right below.
I have one stored procedure:
CREATE OR REPLACE PROCEDURE Proc1()
IS
Declare myName in varchar;
BEGIN
Select fname into myName from student where fname='x'; // is returning unique value
-- here call anoher proc2
END;
Now so this proc1 procedure is going to call this proc2 procedure.
Now I have second stored procedure:
CREATE OR REPLACE PROCEDURE Proc2(Name in varchar)
IS
BEGIN
-- do anything
END;
I solved this problem,
So solution is like If we want to execute proc using sql command then syntex is like below,
call Proc2('My Name');
We can use this same approach inside our proc also.
For that we have to follow some steps. Lets say that our above sql call is statement that we want to execute. we are going to convert that statement into String and pass necessary parameter by concating variable values. Then execute statement.
CREATE OR REPLACE PROCEDURE Proc1()
IS
Declare myName in varchar;
-- stmt variable is to execute our proc
STMT VARCHAR(4000);
BEGIN
Select fname into myName from student where fname='x'; // is returning unique value
-- this is our logic
STMT :='call Proc2('||myName||')';
EXECUTE IMMEDIATE STMT;
END;
I am trying to create a simple stored procedure in DB2 that performs the following actions:
Drop table "DELETE_ME"
Create table "DELETE_ME"
Insert into table "DELETE_ME"
Basically, if the table DELETE_ME already exists, the stored procedure executes fine. If it does not exist, then the Stored Procedure fails with the following error:
Lookup Error - DB2 Database Error: ERROR [42704] [IBM][DB2/LINUXX8664] SQL0204N "SARTS02T.DELETE_ME" is an undefined name.
I completely understand this. However, I was hoping to set the procedure up to ignore this error (and all errors) that way the procedure can work as a deployment script as well. On the first deployment, it will ignore the drop table line and jump right to building the table.
I found a CREATE PROCEDURE option called CONTINUE AFTER FAILURE however I am receiving an error. Please see my code and error below. Thanks for your help!!!
CODE:
CREATE OR REPLACE PROCEDURE TEST_PROC LANGUAGE SQL CONTINUE AFTER FAILURE
BEGIN
DROP TABLE DELETE_ME;
CREATE TABLE DELETE_ME (
COLUMN_A DECIMAL(5)
);
INSERT INTO DELETE_ME (COLUMN_A) VALUES (69);
COMMIT;
END;
ERROR:
Lookup Error - DB2 Database Error: ERROR [42601] [IBM][DB2/LINUXX8664] SQL0104N An unexpected token "CONTINUE AFTER FAILURE" was found following "ST_PROC LANGUAGE SQL". Expected tokens may include: "<space>".
The BEGIN ... END section is called a compound statement which allows various declarations and other statements, including other compound statements, to be included inside it.
You'll want to declare a condition handler. You could do it something like this.
CREATE OR REPLACE PROCEDURE TEST_PROC
LANGUAGE SQL
COMMIT ON RETURN YES
BEGIN
DECLARE CONTINUE HANDLER FOR SQLSTATE '42704' -- or SQLEXCEPTION
BEGIN
-- insert any code here when DROP fails
END;
DROP TABLE DELETE_ME;
CREATE TABLE DELETE_ME
( COLUMN_A DECIMAL(5)
);
INSERT INTO DELETE_ME (COLUMN_A)
VALUES (69);
END;
All,
I am very new to stored procedures in general but I am struggling especially with those in Oracle. I have created a very simple example of what I am trying to accomplish and I am still getting the same error with this simplified version.
The example stored procedure is as follows:
CREATE OR REPLACE PROCEDURE ashish_test
AUTHID CURRENT_USER IS
BEGIN
DECLARE
v_tab VARCHAR2(50);
v_strSQL VARCHAR2(50);
BEGIN
v_strSQL := 'SELECT * FROM :1';
v_tab := 'ex.emp';
EXECUTE IMMEDIATE v_strSQL USING v_tab;
END;
END;
When I call the above stored procedure using CALL ashish_test(), I get :
Error Message http://web1.twitpic.com/img/12831839-06a3ea536df5d5a0a839eb83d9e59d25.4a3936b8-scaled.jpg
Based on this article (Look for Example 7-1), USING keyword should replace the numbered placeholder (:1) within v_strSQL with the value stored in v_tab. However, I keep getting invalid table error. I am guessing it's because EXECUTE IMMEDIATE is unable to replace the placeholder with the value for some reason but I am not sure why that is. Does anyone know if I am doing something stupid here?
I am running this on Oracle 10g database & using PL/SQL Developer.
The USING clause is only for bind variables (i.e. where you would use column names in a select statement), not table names. Typical usage would look like this:
Select col1 from table1 where col2 = :a
If you want to use variable table names use something like this:
v_tab := 'ex.emp';
v_strSQL := 'SELECT * FROM ' || v_tab;
EXECUTE IMMEDIATE v_strSQL;