PL/SQL变量与游标

DECLARE

i NUMBER;

a student.sname%TYPE;--引用型变量

b student%ROWTYPE;--记录型变量

BEGIN
  
i := 101;

--SELECT student.sname INTO a FROM student WHERE student.sno = i;
--dbms_output.put_line(a);

SELECT * INTO b FROM student WHERE student.sno = i;

dbms_output.put_line(b.ssex);




END;

　　

游标

/*ISOPEN
NOTFOUND
FOUND
ROWCOUNT*/
DECLARE
    stu student%ROWTYPE;
     CURSOR stus IS SELECT * FROM student;
BEGIN
  OPEN stus;
  LOOP
    FETCH stus
      INTO stu;
    EXIT WHEN stus%NOTFOUND;
    dbms_output.put_line(stu.sname);
    END LOOP;
    CLOSE stus;
END;