Given two tables Student(SID, Name, Course) and Level(SID,
level) write the SQL statement to get the name and SID of
the student who are taking course = 3 and at freshman level.
declare
lowerl number:= 1;
upperl number:= 3;
num varchar2(10);
begin
for i into lowerl..upperl
loop
num:=num||to_char(lowerl);
if i=3 then upperl:=5;
end loop;
message(num);
What will be the output ?
declare
l1 number := null;
l2 number :=null;
begin
if l1=l2 then message('equal');
else
if l1<>l2 then message('not equal');
else
message('else');
end if;
end if;
end;
What will be the output ?
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