Can we put procedure in a function?

Hello

If you mant to say have a procedural code in a function, you can do it, you can have a block of code in a function or if you want to call a procedure in a function you can call it.
Have you tried to create a Package?

http://download.Oracle.com/docs/CD/B19306_01/AppDev.102/b14261/packages.htm

Thank you

Tags: Database

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Can we call the procedure inside the function?
Hello

Can we call the procedure inside the function?

Thank you
Brij
845712 wrote:

Can we call the procedure inside the function?

Strange question to ask.

Yes. This is the standard behavior in most (if not all) procedural and object oriented languages.

A procedure, function or a method is a unit of code.

You can call one of the other units. Units can call themselves (recursion). Technically, this means simply by pushing the battery current (to save the stack of the current device memory), the call to the new unit and then popping up battery when control is returned to the unity of the appellant.

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Call a procedure and a function over a db link

I feel a few errors with the following and would be very happy in the view of some experts here.
My use case is to insert records into a table via a database link. Inserted records will be interviewed for a same table in the local data dictionary. Everything works, but sometimes, I get a unique constraint violation if I'm trying to insert a duplicate record, so I wrote a simple function to check for the scenario. My problem is that I can run my procedure using the link to the db and I can run my function using the db link, but I can't use the two together without errors.
My test scenario uses only the standard emp table:
```
create or replace procedure test_insert(p_instance varchar2)
IS
l_sql varchar2(4000);
begin
    l_sql := 'insert into EMP@'||p_instance||' (EMPNO, ENAME, JOB, MGR, SAL, DEPTNO) (Select EMPNO, ENAME, JOB, MGR, SAL, DEPTNO from EMP)';
execute immediate l_sql;
END;
```
```
BEGIN
test_insert('myLink');
END;
```
It works very well and the insert occurs without any problem.
If I run the same process a second time, I get:
00001 00000 - "forced single (s.%s) violated" which is what I've been waiting for EMPNO has a unique constraint. So far so good.
Now, I create a function to check if the record exists:
```
create or replace function record_exists(p_empno IN NUMBER, p_instance IN varchar2) return number
IS
l_sql varchar2(4000);
l_count number;
BEGIN
l_sql := 'select count(*) from EMP@'||p_instance||' where empno = '||p_empno;
execute immediate l_sql into l_count;
IF
l_count > 0
THEN return 1;
ELSE
return 0;
END IF;
END;
```
I test this situation as follows:
```
select record_exists(8020, 'myLink') from dual;
```
RECORD_EXISTS(8020,'myLink')
-------------------------------------------
1
That works well, so now I'll add this feature to my procedure:
```
create or replace procedure test_insert(p_instance varchar2)
IS
l_sql varchar2(4000);
begin
    l_sql := 'insert into EMP@'||p_instance||' (EMPNO, ENAME, JOB, MGR, SAL, DEPTNO) (Select EMPNO, ENAME, JOB, MGR, SAL, DEPTNO from EMP WHERE record_exists( EMPNO, '''||p_instance||''') = 0)';
execute immediate l_sql;
END;
```
I test this situation as follows:
```
BEGIN
test_insert('myLink');
END;
```
As a result:
```
Error report:
ORA-02069: global_names parameter must be set to TRUE for this operation
ORA-06512: at "FUSION.TEST_INSERT", line 6
ORA-06512: at line 2
02069. 00000 -  "global_names parameter must be set to TRUE for this operation"
*Cause:    A remote mapping of the statement is required but cannot be achieved
           because global_names should be set to TRUE for it to be achieved
*Action:   Issue alter session set global_names = true if possible
```
I don't know why I'm getting this. The function works, the works of the procedure, but when I combine I get an error. If I set the global setting to true names and then run again I get:
```
02085. 00000 -  "database link %s connects to %s"
*Cause:    a database link connected to a database with a different name.
           The connection is rejected.
*Action:   create a database link with the same name as the database it
           connects to, or set global_names=false.
```
All opinions are appreciated. I do not understand why I can run the procedure and function of each separately on the db connection, but they don't work together.
Thank you
John

The procedure depends on what how would you define failure and it should mean - error to the caller, sign and continue, just continue. Constraints are created to ensure if it receives no invalid data in a table. Generally, they provide the most effective mechanism for the verification of the invalid data and return useful exceptions that can deal with the appellant. You also double the workload of the checking uniqueness by adding your own control.

In general I would say use Exceptions, they are your friend

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Hi all
I have a select statement, this query with the category as a product:
Select c.category_name, p.product_id
product p join internal category c on c.product_id = p.product_id

Now, I have several select statements that will do the calculations and give me a line of results by year:
(I do much inner joins and pivot data to achieve this results from different tables)

Select sum (column1) year01, sum ((column2) year02, sum (column3) sum (column4) year04 year03
from tableA - calculations results for my first product

Select sum (column1) year01, sum ((column2) year02, sum (column3) sum (column4) year04 year03
from tableB - calculations results for my second product

Select sum (column1) year01, sum ((column2) year02, sum (column3) sum (column4) year04 year03
in tableC - calculations results for my third product

Each select statement are calculations that I want to attach to each product, but there is no relationship with the products.
Now I would like to join the results with my first select and get a result like:

category_name, product_id, year01, year02, year03, year04

Can I put my select calculations in functions?
If I can, how can I display the result of different functions for each product?
I need some ideas on how to achieve this.
Thank you

Johnny
So, if I understand correctly, there is no relationship between your first query and queries of summary of each product. If this is the case by default in your product_id by summary query value product would work. Something like...

SELECT
c.category_name,
p.product_id,
Max (u.year01) year01,-guess there is only 1 row by summary motion product, otherwise use sum
Max (u.year02) year02,
....
Of
product p,.
category c,
(SELECT '1' product_id, sum (column1) year01, sum ((column2) year02, sum (column3) year03, sum (column4) year04
FROM tableA - calculations results for my first product
UNION
SELECT '2', sum (column1) year01, sum ((column2) year02, sum (column3) sum (column4) year04 year03
FROM tableB - calculations results for my second product
UNION
.....) u
WHERE
c.product_id = p.product_id
and c.product_id = u.product_id
GROUP BY
c.category_name,
p.product_id

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