---创建表
create table TESTTABLE
(
id1 VARCHAR2(12),
name VARCHAR2(32)
)
select t.id1,t.name from TESTTABLE t
insert into TESTTABLE (ID1, NAME)
values ('1', 'zhangsan');
insert into TESTTABLE (ID1, NAME)
values ('2', 'lisi');
insert into TESTTABLE (ID1, NAME)
values ('3', 'wangwu');
insert into TESTTABLE (ID1, NAME)
values ('4', 'xiaoliu');
insert into TESTTABLE (ID1, NAME)
values ('5', 'laowu');
---创建存储过程
create or replace procedure test_count
as
v_total number(1);
begin
select count(*) into v_total from TESTTABLE;
DBMS_OUTPUT.put_line('总人数:'||v_total);
end;
--准备
--线对scott解锁:alter user scott account unlock;
--应为存储过程是在scott用户下。还要给scott赋予密码
---alter user scott identified by tiger;
---去命令下执行
EXECUTE test_count;
----在ql/spl中的sql中执行
begin
-- Call the procedure
test_count;
end;
create or replace procedure TEST_LIST
AS
---是用游标
CURSOR test_cursor IS select t.id1,t.name from TESTTABLE t;
begin
for Test_record IN test_cursor loop---遍历游标,在打印出来
DBMS_OUTPUT.put_line(Test_record.id1||Test_record.name);
END LOOP;
test_count;--同时执行另外一个存储过程(TEST_LIST中包含存储过程test_count)
end;
-----执行存储过程TEST_LIST
begin
TEST_LIST;
END;
---存储过程的参数
---IN 定义一个输入参数变量,用于传递参数给存储过程
--OUT 定义一个输出参数变量,用于从存储过程获取数据
---IN OUT 定义一个输入、输出参数变量,兼有以上两者的功能
--这三种参数只能说明类型,不需要说明具体长度 比如 varchar2(12),defaul 可以不写,但是作为一个程序员最好还是写上。
---创建有参数的存储过程
create or replace procedure test_param(p_id1 in VARCHAR2 default '0')
as v_name varchar2(32);
begin
select t.name into v_name from TESTTABLE t where t.id1=p_id1;
DBMS_OUTPUT.put_line('name:'||v_name);
end;
----执行存储过程
begin
test_param('1');
end;
default '0'
---创建有参数的存储过程
create or replace procedure test_paramout(v_name OUT VARCHAR2 )
as
begin
select name into v_name from TESTTABLE where id1='1';
DBMS_OUTPUT.put_line('name:'||v_name);
end;
----执行存储过程
DECLARE
v_name VARCHAR2(32);
BEGIN
test_paramout(v_name);
DBMS_OUTPUT.PUT_LINE('name:'||v_name);
END;
-------IN OUT
---创建存储过程
create or replace procedure test_paramINOUT(p_phonenumber in out varchar2)
as
begin
p_phonenumber:='0571-'||p_phonenumber;
end;
----
DECLARE
p_phonenumber VARCHAR2(32);
BEGIN
p_phonenumber:='26731092';
test_paramINOUT(p_phonenumber);
DBMS_OUTPUT.PUT_LINE('新的电话号码:'||p_phonenumber);
END;
-----sql命令下,查询当前用户的存储过程或函数的源代码,
-----可以通过对USER_SOURCE数据字典视图的查询得到。USER_SOURCE的结构如下:
SQL> DESCRIBE USER_SOURCE ;
Name Type Nullable Default Comments
---- -------------- -------- ------- -------------------------------------------------------------------------------------------------------------
NAME VARCHAR2(30) Y Name of the object
TYPE VARCHAR2(12) Y Type of the object: "TYPE", "TYPE BODY", "PROCEDURE", "FUNCTION",
"PACKAGE", "PACKAGE BODY" or "JAVA SOURCE"
LINE NUMBER Y Line number of this line of source
TEXT VARCHAR2(4000) Y Source text
SQL>
---查询出存储过程的定义语句
select text from user_source WHERE NAME='TEST_COUNT';
----查询存储过程test_paramINOUT的参数
SQL> DESCRIBE test_paramINOUT;
Parameter Type Mode Default?
------------- -------- ------ --------
P_PHONENUMBER VARCHAR2 IN OUT
SQL>
---查看当前的存储过程的状态是否正确,
---VALID为正确,INVALID表示存储过程无效或需要重新编译
SELECT STATUS FROM USER_OBJECTS WHERE OBJECT_NAME='TEST_COUNT';
-----如果要检查存储过程或函数的依赖性,可以通过查询数据字典USER_DENPENDENCIES来确定,该表结构如下:
SQL> DESCRIBE USER_DEPENDENCIES;
Name Type Nullable Default Comments
-------------------- ------------- -------- ------- ----------------------------------------------------------
NAME VARCHAR2(30) Name of the object
TYPE VARCHAR2(17) Y Type of the object
REFERENCED_OWNER VARCHAR2(30) Y Owner of referenced object (remote owner if remote object)
REFERENCED_NAME VARCHAR2(64) Y Name of referenced object
REFERENCED_TYPE VARCHAR2(17) Y Type of referenced object
REFERENCED_LINK_NAME VARCHAR2(128) Y Name of dblink if this is a remote object
SCHEMAID NUMBER Y
DEPENDENCY_TYPE VARCHAR2(4) Y
SQL>
---查询存储过程TEST_COUNT的依赖关系
SELECT REFERENCED_NAME,REFERENCED_TYPE FROM USER_DEPENDENCIES WHERE NAME='TEST_COUNT';