PL/SQL块loop..各种循环练习

--利用loop输出1到100的值并求和

---loop exit end loop

set serveroutput on;

declare

v_i integer:=1;

v_sum integer:=0;

begin

loop

if(v_i>100)then

exit;

end if;

DBMS_OUTPUT.PUT_LINE(v_i);

v_sum:=v_sum+v_i;

v_i:=v_i+1;

end loop;

DBMS_OUTPUT.PUT_LINE('sum is'||v_sum);

end;

-----------------

--loop 代码 exit when 条件; end loop



declare 

v_i integer :=1;

v_sum integer:=0;

begin

 loop

 exit when v_i>100;

 v_sum :=v_sum+v_i;

 v_i:=v_i+1;

 end loop;

 DBMS_OUTPUT.PUT_LINE('sun is'||v_sum);

 end;

---while 条件 loop 代码 end loop

declare 

v_i integer :=1;

v_sum integer:=0;

begin

while v_i<=100 

loop

 v_sum :=v_sum+v_i;

 v_i:=v_i+1;

 end loop;

 DBMS_OUTPUT.PUT_LINE('sun is'||v_sum);

 end;

--for in...



declare 

v_s integer:=0;

begin

for i in 1..100 loop

v_s:=v_s+i;

end loop;

DBMS_OUTPUT.PUT_LINE(v_s);

end;