2020-10-20_Oracle存储过程的基本用法
一、不带参数的存储过程:
--oracle调用存储过程;
CREATE OR REPLACE PROCEDURE MYDEMO02
AS
name VARCHAR(10);
age NUMBER(10);
BEGIN
name := 'xiaoming';--:=则是对属性进行赋值
age := 18;
dbms_output.put_line ( 'name=' || name || ', age=' || age );--这条是输出语句
END;
--存储过程调用(下面只是调用存储过程语法)
BEGIN
MYDEMO02();
END;
call MYDEMO02();
二、带参数的存储过程
CREATE OR REPLACE procedure MYDEMO03(name in varchar,age in int)
AS
BEGIN
dbms_output.put_line('name='||name||', age='||age);
END;
--存储过程调用
BEGIN
MYDEMO03('姜煜',18);
END;
三、出现异常的输出存储过程:
CREATE OR REPLACE PROCEDURE MYDEMO04
AS
age INT;
BEGIN
age:=10/0;
dbms_output.put_line(age);
EXCEPTION when others then --处理异常
dbms_output.put_line('error');
END;
--调用存储过程
BEGIN
MYDEMO04;
END;
四、获取当前时间和总人数:
CREATE OR REPLACE PROCEDURE TEST_COUNT01
IS
v_total int;
v_date varchar(20);
BEGIN
select count(*) into v_total from SYS_LOGIN_USERS WHERE LOGIN_NAME ='姜南'; --into是赋值的关键字
select to_char(sysdate,'yyyy-mm-dd')into v_date from SYS_LOGIN_USERS WHERE LOGIN_NAME ='姜南';
DBMS_OUTPUT.put_line('总人数:'||v_total);
DBMS_OUTPUT.put_line('当前日期'||v_date);
END;
--调用存储过程
BEGIN
TEST_COUNT01();
END;
五、带输入参数和输出参数的存储过程:
CREATE OR REPLACE PROCEDURE TEST_COUNT04(v_id in varchar2,v_name out varchar2)
AS
BEGIN
SELECT LOGIN_NAME into v_name FROM SYS_LOGIN_USERS WHERE login_id = v_id ;
DBMS_OUTPUT.put_line('姓名:'||v_name);
EXCEPTION
when no_data_found then dbms_output.put_line('no_data_found');
END;
--调用存储过程
DECLARE
v_name varchar(200);
BEGIN
TEST_COUNT04('jiangnan',v_name);
END;
六、查询存储过程及其它;
CREATE OR REPLACE PROCEDURE job_day04(de in varchar,name out varchar,App_Code out varchar,error_Msg out varchar)
AS
BEGIN
SELECT ENAME into name FROM EMP_TEST WHERE ENAME=de;
EXCEPTION WHEN others THEN
error_Msg:='未找到数据';
END;
--调用存储过程
DECLARE
de varchar(10);
ab varchar(10);
appcode varchar(20);
ermg varchar(20);
BEGIN
de:= '张三丰';
JOB_DAY04(de,ab,appcode,ermg);
dbms_output.put_line(ermg);
END;
七、向数据库中添加数据的存储过程
CREATE OR REPLACE PROCEDURE ZJMES.job_day05(do1 in varchar,dn1 in varchar,eo1 in number,en1 in varchar,dn2 in varchar,App_Code out varchar,error_Msg out varchar)
AS
BEGIN
INSERT INTO STUDENT(NAME,CLASS)VALUES(do1,dn1);
INSERT INTO COMPANY(EMPID,NAME,DEPARNAME)VALUES(eo1,en1,dn2);
COMMIT;
EXCEPTION WHEN OTHERS THEN
App_Code:=-1;
error_Msg:='插入失败';
END;
--调用存储过程
DECLARE
do1 varchar(10);
dn1 varchar(10);
eo1 number(20);
en1 varchar(20);
dn2 varchar(20);
App_Code varchar(20);
error_Msg varchar(20);
BEGIN
do1:= '张三丰';
dn1:= '新桥';
eo1:= 1001;
en1:= '老子';
dn2:= '道家办公室';
ZJMES.job_day05(do1,dn1,eo1,en1,dn2,App_Code,error_Msg);
dbms_output.put_line(error_Msg);
END;