database - PL/SQL: IF ELSE statement and working with an invalid string from user input -


i taking in user input database. when user enters invalid name not in database trying error message saying input not in database. cant figure out belongs after v_employee_name. great. thanks!!

accept p_1 prompt 'please enter employee name'  declare v_employee_name    varchar2(40) :='&p_1'; (declared cursors)  begin    if v_employee_name (???????)       dbms_output.put_line('the employee not in database' || upper(v_employee_name));    else        ...........

you cannot expect database validate user's input if magic. because databases aren't magic. need write query. know, shocking.

accept p_1 prompt 'please enter employee name'  declare   v_employee_id   employees.emp_id%type; (declared cursors)  begin    begin      select emp_id v_employee_id      employees      employee_name = upper('&p_1');      --      ....   exception      when no_data_found           raise_application_error(-20000, 'the employee not in database' || upper(v_employee_name));    end;      ....

incidentally, if you're going capitalize name in output should capitalize when doing validation, case matters when testing equality.


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