ORACLE的循环

LOOP循环

declare
num number;
begin num:=1;
loopdbms_output.put_line('yes');IF num >= 10 THENEXIT;END IF;num := num + 1;
end loop;
end;

WHILE 循环

declare
num stu_info.id%type;
beginnum:=0;while num<10 loopdbms_output.put_line(num);num:=num+1;end loop;
end;

FOR 循环

declare
begin for i in 1..10loopdbms_output.put_line(i);end loop;
end;

DECLARE-- 定义循环的起始值、结束值和步长start_num NUMBER := 1;end_num NUMBER := 10;step NUMBER := 2;
BEGINFOR i IN start_num..end_num LOOPDBMS_OUTPUT.PUT_LINE(i);-- 在循环中添加步长i := i + step;END LOOP;
END;

带SQL语句的FOR循环

declare 
s_id stu_info.id%type;
begin for i in 1..100loopbeginselect id into s_id from stu_info where id=2;dbms_output.put_line(s_id);end;end loop;
end;