SQL>
SQL> -- examine the contents of a variable created using the DEFINE command by typing DEFINE
SQL> -- and specifying the variable name:
SQL>
SQL> DEFINE V_STUDENT_NBR = "1000";
SQL>
SQL> DEFINE v_student_nbr;
DEFINE V_STUDENT_NBR = "1000" (CHAR)
SQL>
SQL> DEFINE V_STUDENT_NBR = "1000" (CHAR);
SQL>
SQL>