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for a pl sql code . DECLARE  rec_stu stus%ROWTYPE;  lv_stu_num stus.stuid%TYPE := 50; BEGIN when stuid 50  then             rollback       SELECT *    INTO rec_stu   FROM stus       WHERE stuid = lv_stu_num;        DBMS_OUTPUT.PUT_LINE(rec_stu.stuid || rec_stu.stuname || rec_stu.stugrade); END; how could i add 2variable  in this code  stu 49 display name ,id and grade, stu 111 display "no such one "

for a pl sql code . DECLARE  rec_stu stus%ROWTYPE;  lv_stu_num stus.stuid%TYPE := 50; BEGIN when stuid 50  then             rollback       SELECT *    INTO rec_stu   FROM stus       WHERE stuid = lv_stu_num;        DBMS_OUTPUT.PUT_LINE(rec_stu.stuid || rec_stu.stuname || rec_stu.stugrade); END; how could i add 2variable  in this code  stu 49 display name ,id and grade, stu 111 display "no such one "

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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 for a pl sql code .
DECLARE
 rec_stu stus%ROWTYPE;
 lv_stu_num stus.stuid%TYPE := 50;
BEGIN
when stuid 50 
then     
       rollback

      SELECT *    INTO rec_stu   FROM stus
      WHERE stuid = lv_stu_num;
       DBMS_OUTPUT.PUT_LINE(rec_stu.stuid || rec_stu.stuname || rec_stu.stugrade);
END;

how could i add 2variable  in this code 
stu 49
display name ,id and grade,


stu 111
display "no such one "

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