SET serveroutput On
DECLARE
veno emp.eno%type;
vename emp.ename%type;
ex_invalid_no EXCEPTION;
BEGIN
veno := '&veno';
IF substr(veno,1,1) <> 'E' THEN
RAISE ex_invalid_no;
ELSE
SELECT ename INTO vename
FROM emp
WHERE eno = veno;
DBMS_OUTPUT.PUT_LINE ('Name: '|| vename);
END IF;
EXCEPTION
WHEN ex_invalid_no THEN
dbms_output.put_line('ID must start with E');
END;
/
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