如何使用私有过程创建Oracle包？
我正在创建一个 Oracle 包，我想知道是否可以将 prcedure 设为私有，这是我的示例代码：
CREATE OR REPLACE PACKAGE MYSCHEMA.MyPackage AS
PROCEDURE MyProcedureA(outputParam OUT VARCHAR2);
PROCEDURE MyProcedureB(inputParam IN VARCHAR2);
END MyPackage;
/
CREATE OR REPLACE PACKAGE BODY MYSCHEMA.MyPackage AS
PROCEDURE MyProcedureA(outputParam OUT VARCHAR2) AS
myHello VARCHAR2(1000) := 'Hello';
BEGIN
MyProcedureB(myHello);
outputParam := 'OK';
END MyProcedureA;
PROCEDURE MyProcedureB(inputParam IN VARCHAR2) AS
myWorld VARCHAR2(1000) := 'World';
BEGIN
dbms_output.put_line(inputParam || myWorld);
END MyProcedureB;
END MyPackage;
是否可以将 MyProcedureB 设为“私有”，我的意思是它只能由包 (MyProcedureA) 中的其他程序调用？
回答
当然。包规范中未声明的任何内容都是私有的。
MyProcedureB但是，一旦从包规范中删除，就需要在MyProcedureA. 我通常更喜欢通过将 的实现放在包体中的实现MyProcedureB之前来做到这一点MyProcedureA。
CREATE OR REPLACE PACKAGE MYSCHEMA.MyPackage AS
PROCEDURE MyProcedureA(outputParam OUT VARCHAR2);
END MyPackage;
/
CREATE OR REPLACE PACKAGE BODY MYSCHEMA.MyPackage AS
PROCEDURE MyProcedureB(inputParam IN VARCHAR2) AS
myWorld VARCHAR2(1000) := 'World';
BEGIN
dbms_output.put_line(inputParam || myWorld);
END MyProcedureB;
PROCEDURE MyProcedureA(outputParam OUT VARCHAR2) AS
myHello VARCHAR2(1000) := 'Hello';
BEGIN
MyProcedureB(myHello);
outputParam := 'OK';
END MyProcedureA;
END MyPackage;
您也可以保留订单，只需在包体顶部声明程序的规范
CREATE OR REPLACE PACKAGE MYSCHEMA.MyPackage AS
PROCEDURE MyProcedureA(outputParam OUT VARCHAR2);
END MyPackage;
/
CREATE OR REPLACE PACKAGE BODY MYSCHEMA.MyPackage AS
PROCEDURE MyProcedureB(inputParam IN VARCHAR2);
PROCEDURE MyProcedureA(outputParam OUT VARCHAR2) AS
myHello VARCHAR2(1000) := 'Hello';
BEGIN
MyProcedureB(myHello);
outputParam := 'OK';
END MyProcedureA;
PROCEDURE MyProcedureB(inputParam IN VARCHAR2) AS
myWorld VARCHAR2(1000) := 'World';
BEGIN
dbms_output.put_line(inputParam || myWorld);
END MyProcedureB;
END MyPackage;