Oracle存储过程（二）

摘要: Oracle存储过程

存过：

create or replace procedure add_one_student
as
v_name varchar2(20):='zhugeliang';
v_age number:=16;
begin
insert into student values(student_id.nextval,'zhugeliang','111111','18998989898','luoyang',v_age,v_name);
exception
when others then
dbms_output.put_line('插入数据失败');
end;

执行：

execute add_one_student();
commit;

比较两个数据：

create or replace procedure compare_number(n1 in number,n2 in number)
as
v_n1 number;
v_n2 number;
v_result varchar2(20);
begin
v_n1:=n1;
v_n2:=n2;
if v_n1 is null or v_n2 is null then
v_result:='undefined';
elsif v_n1>v_n2 then
v_result:='v_n1 is big number';
else
v_result:='v_n2 is big number';
end if;
dbms_output.put_line('v_result='||v_result);
end;

执行：

execute compare_number(100，200)；

commit;

存过三：

create or replace procedure test_case(str in char)
as
grade char;
remark varchar2(100);
begin
grade:=str;
case grade
when 'A' then remark:='AAAAAAAAA';
when 'B' then remark:='BBBBBBBBB';
when 'C' then remark:='CCCCCCCCC';
when 'D' then remark:='DDDDDDDDD';
else remark:='no grade';
end case;
dbms_output.put_line('remark='||remark);
end;

执行：

execute test_case('C');