Plu SQL hang up when the cursor is fired.

Hello
I'm just a beginner in sql and plsql. I run the cursor query as below in my sql more window:

Declare
CURSOR emp_cursor IS SELECT * FROM employees WHERE employee_id = 100;
employees emp_record % rowtype;
Begin
OPEN emp_cursor;
LOOP
LOOK INTO emp_record emp_cursor;
DBMS_OUTPUT. Put_line (emp_record);
END LOOP;
NARROW Emp_cursor;
END;

While I try to run the plu SQL hang (the cursor (_) flashes to a new line in trying to retrieve the result). Even after 10-15 minutes the result is displayed and I cannot type in any other question, that the system is not ready. In short sql plu hangs up.

Add the exit condition

FETCH emp_cursor INTO emp_record;
exit when emp_cursor%notfound;

also your call to DBMS_OUTPUT. Procedure put_line() is not.
It takes a VARCHAR2 as an input parameter, when you pass a variable with employees % rowtype.
For me, it showed the following error:

DBMS_OUTPUT.PUT_LINE(emp_record);
*
ERROR at line 8:
ORA-06550: line 8, column 1:
PLS-00306: wrong number or types of arguments in call to 'PUT_LINE'

That should be:

DBMS_OUTPUT.PUT_LINE(emp_record.employee_id); --Or whatever columns you want to display

Tags: Database

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