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SQL> create or replace package yip is
2 ws_date1 date;
3 WS_NUMBER1 number;
4 end;
5 /
Package created.
SQL> exec yip.ws_date1 := sysdate
PL/SQL procedure successfully completed.
SQL> exec yip.ws_number1 := 2
PL/SQL procedure successfully completed.
SQL> exec yip.ws_date1 := yip.ws_date1 + yip.ws_number1
PL/SQL procedure successfully completed.
SQL> set serveroutput on format wrap
SQL> begin
2 dbms_output.put_line (yip.ws_number1||' days from today is '||yip.ws_date1);
3 end;
4 /
2 days from today is 18-MAY-05
PL/SQL procedure successfully completed.