select statement not working in procedure - sql

Question

create table Employee(Id number,
Name varchar(20),
Age number,
DId number,
Salary number,
primary key(Id),
foreign key(DId) references Department on delete cascade);
declare
total number;
procedure myFunction(x in number) is
begin
insert into Employee values(17,'Jaskaran Singh',31,1,200000);
dbms_output.put_line('successfully executed');
select * from Employee;
end;
begin
myFunction(3);
end;

Answer 1

To return data from stored procedure, you should create a cursor and return that select like the following:
CREATE OR REPLACE PACKAGE TYPES
AS
TYPE DATA_CURSOR IS REF CURSOR;
END;
then in your code is going to be like:
CREATE OR REPLACE PROCEDURE MYPROC(RESULTSET OUT TYPES.DATA_CURSOR) AS
BEGIN
INSERT INTO EMPLOYEE VALUES(17,'Jaskaran Singh',31,1,200000);
DBMS_OUTPUT.PUT_LINE('successfully executed');
OPEN RESULTSET FOR
SELECT * FROM EMPLOYEE;
END;
The Execution part like
DECLARE THE_RESULT_SET OUT TYPES.DATA_CURSOR;
BEGIN
MYPROC(3, THE_RESULT_SET);
-- You can now get the THE_RESULT_SET and take the result from it...
END;
Important: if you want to print as I understand the other case, you can get that result (same code), and loop whatever you want and print the result from the THE_RESULT_SET

Answer 2

If you want to print what's in the EMPLOYEES table you have loop a cursor over the EMPLOYEES table, printing each row appropriately. Here's an example:
DECLARE
TOTAL NUMBER;
PROCEDURE MYFUNCTION(X IN NUMBER) IS
BEGIN
INSERT INTO EMPLOYEE VALUES(17,'Jaskaran Singh',31,1,200000);
DBMS_OUTPUT.PUT_LINE('successfully executed');
FOR aRow IN (SELECT * FROM EMPLOYEE) LOOP
DBMS_OUTPUT.PUT_LINE('ID=' || aRow.ID ||
' NAME=''' || aRow.NAME || '''' ||
' AGE=' || aRow.AGE ||
' DID=' || aRow.DID ||
' SALARY=' || aRow.SALARY);
END LOOP;
END;
BEGIN
MYFUNCTION(3);
END;
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