SQL> col object_name format a20; SQL> col object_type format a20; SQL> select object_name,object_type from user_objects 2 order by object_type asc; OBJECT_NAME OBJECT_TYPE -------------------- -------------------- TAX FUNCTION BIN$kHmZTqomReyTGf6x INDEX Gpa9GQ==$2 BIN$gtl8hEtDTwyJSJRw INDEX zqxFjQ==$0 BIN$lBwhR7ckQVmBoQJC INDEX jyJTxg==$2 AVGSALARYFORDEPT PROCEDURE OBJECT_NAME OBJECT_TYPE -------------------- -------------------- RAISEDSALARYBYEMPNOP PROCEDURE ROC ADD_DEPT_PROC PROCEDURE EMPCOPY TABLE TMP TABLE DEPT TABLE SALGRADE TABLE BONUS TABLE EMP TABLE EMP_VW VIEW 已选择14行。 SQL> set linesize 200; SQL> / OBJECT_NAME OBJECT_TYPE -------------------- -------------------- TAX FUNCTION BIN$kHmZTqomReyTGf6x INDEX Gpa9GQ==$2 BIN$gtl8hEtDTwyJSJRw INDEX zqxFjQ==$0 BIN$lBwhR7ckQVmBoQJC INDEX jyJTxg==$2 AVGSALARYFORDEPT PROCEDURE OBJECT_NAME OBJECT_TYPE -------------------- -------------------- RAISEDSALARYBYEMPNOP PROCEDURE ROC ADD_DEPT_PROC PROCEDURE EMPCOPY TABLE TMP TABLE DEPT TABLE SALGRADE TABLE BONUS TABLE EMP TABLE EMP_VW VIEW 已选择14行。 SQL> set pagesize 100; SQL> / OBJECT_NAME OBJECT_TYPE -------------------- -------------------- TAX FUNCTION BIN$kHmZTqomReyTGf6x INDEX Gpa9GQ==$2 BIN$gtl8hEtDTwyJSJRw INDEX zqxFjQ==$0 BIN$lBwhR7ckQVmBoQJC INDEX jyJTxg==$2 AVGSALARYFORDEPT PROCEDURE RAISEDSALARYBYEMPNOP PROCEDURE ROC ADD_DEPT_PROC PROCEDURE EMPCOPY TABLE TMP TABLE DEPT TABLE SALGRADE TABLE BONUS TABLE EMP TABLE EMP_VW VIEW 已选择14行。 SQL> create or replace package employee_pkg is 2 3 -- Author : ADMINISTRATOR 4 -- Created : 2010-6-17 上午 09:19:27 5 -- Purpose : This is a demo. 6 7 end employee_pkg; 8 / 程序包已创建。 SQL> create or replace package body employee_pkg is 2 3 4 end employee_pkg; 5 / 程序包体已创建。 SQL> select object_name,object_type from user_objects 2 order by object_type asc; OBJECT_NAME OBJECT_TYPE -------------------- -------------------- TAX FUNCTION BIN$gtl8hEtDTwyJSJRw INDEX zqxFjQ==$0 BIN$lBwhR7ckQVmBoQJC INDEX jyJTxg==$2 BIN$kHmZTqomReyTGf6x INDEX Gpa9GQ==$2 EMPLOYEE_PKG PACKAGE EMPLOYEE_PKG PACKAGE BODY RAISEDSALARYBYEMPNOP PROCEDURE ROC AVGSALARYFORDEPT PROCEDURE ADD_DEPT_PROC PROCEDURE EMPCOPY TABLE SALGRADE TABLE EMP TABLE BONUS TABLE TMP TABLE DEPT TABLE EMP_VW VIEW 已选择16行。 SQL> create or replace package employee_pkg is 2 3 -- Author : ADMINISTRATOR 4 -- Created : 2010-6-17 上午 09:19:27 5 -- Purpose : This is a demo. 6 7 procedure print_ename(p_empno emp.empno%type); 8 9 --编写一个函数,用户校验输入的用户编号是否有效 10 function isValiad(p_empno emp.empno%type) return boolean; 11 12 end employee_pkg; 13 / 程序包已创建。 SQL> create or replace package body employee_pkg is 2 3 procedure print_ename(p_empno emp.empno%type) 4 is 5 begin 6 null; 7 end print_ename; 8 9 --编写一个函数,用户校验输入的用户编号是否有效 10 function isValiad(p_empno emp.empno%type) return boolean 11 is 12 begin 13 14 return false; 15 16 end isValiad; 17 18 end employee_pkg; 19 / 程序包体已创建。 SQL> select object_name,object_type from user_objects 2 order by object_type asc; OBJECT_NAME OBJECT_TYPE -------------------- -------------------- TAX FUNCTION BIN$gtl8hEtDTwyJSJRw INDEX zqxFjQ==$0 BIN$lBwhR7ckQVmBoQJC INDEX jyJTxg==$2 BIN$kHmZTqomReyTGf6x INDEX Gpa9GQ==$2 EMPLOYEE_PKG PACKAGE EMPLOYEE_PKG PACKAGE BODY RAISEDSALARYBYEMPNOP PROCEDURE ROC AVGSALARYFORDEPT PROCEDURE ADD_DEPT_PROC PROCEDURE EMPCOPY TABLE SALGRADE TABLE EMP TABLE BONUS TABLE TMP TABLE DEPT TABLE EMP_VW VIEW 已选择16行。 SQL> show user; USER 为 "SCOTT" SQL> create or replace package body employee_pkg is 2 3 procedure print_ename(p_empno emp.empno%type) 4 is 5 v_ename varchar2(30); 6 begin 7 8 --调用函数校验编号是否有效 9 if(isValiad(p_empno)) then 10 11 12 select ename into v_ename 13 from emp 14 where empno=p_empno; 15 dbms_output.put_line(p_empno|| ' 号雇员的姓名为: '||v_ename); 16 else 17 dbms_output.put_line(p_empno||' 的雇员不存在...'); 18 end if; 19 20 end print_ename; 21 22 --编写一个函数,用户校验输入的用户编号是否有效 23 function isValiad(p_empno emp.empno%type) return boolean 24 is 25 v_count number:=-1; 26 begin 27 28 select count(empno) into v_count 29 from emp 30 where empno=p_empno; 31 if(v_count>0) then 32 return true; 33 elsif 34 return false; 35 end if; 36 37 end isValiad; 38 39 end employee_pkg; 40 / 警告: 创建的包体带有编译错误。 SQL> show errors; PACKAGE BODY EMPLOYEE_PKG 出现错误: LINE/COL ERROR -------- ----------------------------------------------------------------- 34/16 PLS-00103: 出现符号 "FALSE"在需要下列之一时: . ( * @ % & = - + < / > at in is mod remainder not rem then <an exponent (**)> <> or != or ~= >= <= <> and or like LIKE2_ LIKE4_ LIKEC_ between || multiset member SUBMULTISET_ 符号 "then" 被替换为 "FALSE" 后继续。 SQL> create or replace package body employee_pkg is 2 3 procedure print_ename(p_empno emp.empno%type) 4 is 5 v_ename varchar2(30); 6 begin 7 8 --调用函数校验编号是否有效 9 if(isValiad(p_empno)) then 10 11 12 select ename into v_ename 13 from emp 14 where empno=p_empno; 15 dbms_output.put_line(p_empno|| ' 号雇员的姓名为: '||v_ename); 16 else 17 dbms_output.put_line(p_empno||' 的雇员不存在...'); 18 end if; 19 20 end print_ename; 21 22 --编写一个函数,用户校验输入的用户编号是否有效 23 function isValiad(p_empno emp.empno%type) return boolean 24 is 25 v_count number:=-1; 26 begin 27 28 select count(empno) into v_count 29 from emp 30 where empno=p_empno; 31 if(v_count>0) then 32 return true; 33 else 34 return false; 35 end if; 36 37 end isValiad; 38 39 end employee_pkg; 40 / 程序包体已创建。 SQL> exec employee_pkg.print_ename(7782); PL/SQL 过程已成功完成。 SQL> set serveroutput on; SQL> exec employee_pkg.print_ename(7782); 7782 号雇员的姓名为: CLARK PL/SQL 过程已成功完成。 SQL> exec employee_pkg.print_ename(7781); 7781 的雇员不存在... PL/SQL 过程已成功完成。 SQL> create or replace package employee_pkg is 2 3 -- Author : ADMINISTRATOR 4 -- Created : 2010-6-17 上午 09:19:27 5 -- Purpose : This is a demo. 6 7 procedure print_ename(p_empno emp.empno%type); 8 9 --编写一个函数,用户校验输入的用户编号是否有效 10 function isValiad(p_empno emp.empno%type) return boolean; 11 12 --编写一个过程,按照给定的部门编号,输出雇员的一些基本信息:雇员编号,姓名,工种,工资等等 13 procedure displayEmpInfo(p_deptno emp.deptno%type); 14 15 end employee_pkg; 16 / 程序包已创建。 SQL> select * from emp where deptno=10; EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO ---------- ---------- --------- ---------- -------------- ---------- ---------- ---------- 7782 CLARK MANAGER 7839 09-6月 -81 2450 10 7839 KING PRESIDENT 17-11月-81 5000 10 7934 MILLER CLERK 7782 23-1月 -82 1300 10 SQL> create or replace package body employee_pkg is 2 3 procedure print_ename(p_empno emp.empno%type) 4 is 5 v_ename varchar2(30); 6 begin 7 8 --调用函数校验编号是否有效 9 if(isValiad(p_empno)) then 10 11 12 select ename into v_ename 13 from emp 14 where empno=p_empno; 15 dbms_output.put_line(p_empno|| ' 号雇员的姓名为: '||v_ename); 16 else 17 dbms_output.put_line(p_empno||' 的雇员不存在...'); 18 end if; 19 20 end print_ename; 21 22 --编写一个函数,用户校验输入的用户编号是否有效 23 function isValiad(p_empno emp.empno%type) return boolean 24 is 25 v_count number:=-1; 26 begin 27 28 select count(empno) into v_count 29 from emp 30 where empno=p_empno; 31 if(v_count>0) then 32 return true; 33 else 34 return false; 35 end if; 36 37 end isValiad; 38 39 --对包头中增加的内容作出具体实现 40 --由于按照部门编号查询,会产生多行的情况,所以需要使用 41 --PLSQL表,也叫做Index-by表处理结果。 42 procedure displayEmpInfo(p_deptno emp.deptno%type) 43 is 44 --定义PLSQL表,或者Index-by表 45 type emp_table_type is table of emp%rowtype 46 index by binary_integer; 47 --具体使用时,需要使用type声明变量 48 emp_table emp_table_type; 49 begin 50 select * bulk collect into emp_table /* bulk collect 表示批量处理*/ 51 from emp where deptno=p_deptno; 52 for i in 1.. emp_table.count loop 53 54 dbms_output.put_line('雇员编号:'||emp_table(i).empno||' 雇员姓名:'|| 55 emp_table(i).ename||' 雇员工种:'||emp_table(i).job||' 雇员工资:'|| 56 emp_table(i).sal); 57 58 end loop; 59 60 end displayEmpInfo; 61 62 63 64 end employee_pkg; 65 / 程序包体已创建。 SQL> exec employee_pkg.displayEmpInfo(10); 雇员编号:7782 雇员姓名:CLARK 雇员工种:MANAGER 雇员工资:2450 雇员编号:7839 雇员姓名:KING 雇员工种:PRESIDENT 雇员工资:5000 雇员编号:7934 雇员姓名:MILLER 雇员工种:CLERK 雇员工资:1300 PL/SQL 过程已成功完成。 SQL> exec employee_pkg.displayEmpInfo(20); 雇员编号:7369 雇员姓名:SMITH 雇员工种:CLERK 雇员工资:13176.9 雇员编号:7566 雇员姓名:JONES 雇员工种:MANAGER 雇员工资:9000 雇员编号:7788 雇员姓名:SCOTT 雇员工种:ANALYST 雇员工资:10890 雇员编号:7876 雇员姓名:ADAMS 雇员工种:CLERK 雇员工资:9000 雇员编号:7902 雇员姓名:FORD 雇员工种:ANALYST 雇员工资:9900 PL/SQL 过程已成功完成。