loop循环:
create or replace procedure pro_test_loop is
i number;
begin
i:=0;
loop
i:=i+1;
dbms_output.put_line(i);
if i>5 then
exit;
end if;
end loop;
end pro_test_loop;
while循环:
create or replace procedure pro_test_while is
i number;
begin
i:=0;
while i<5 loop
i:=i+1;
dbms_output.put_line(i);
end loop;
end pro_test_while;
for循环1:
create or replace procedure pro_test_for is
i number;
begin
i:=0;
for i in 1..5 loop
dbms_output.put_line(i);
end loop;
end pro_test_for;
for循环2:
create or replace procedure pro_test_cursor is
userRow t_user%rowtype;
cursor userRows is
select * from t_user;
begin
create or replace procedure pro_test_loop is
i number;
begin
i:=0;
loop
i:=i+1;
dbms_output.put_line(i);
if i>5 then
exit;
end if;
end loop;
end pro_test_loop;
while循环:
create or replace procedure pro_test_while is
i number;
begin
i:=0;
while i<5 loop
i:=i+1;
dbms_output.put_line(i);
end loop;
end pro_test_while;
for循环1:
create or replace procedure pro_test_for is
i number;
begin
i:=0;
for i in 1..5 loop
dbms_output.put_line(i);
end loop;
end pro_test_for;
for循环2:
create or replace procedure pro_test_cursor is
userRow t_user%rowtype;
cursor userRows is
select * from t_user;
begin
本文介绍了Oracle数据库中三种常用的循环语句:loop、while和for循环的使用方法,并提供了具体的实现示例。通过这些示例,读者可以了解如何在PL/SQL块中控制循环流程。
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