SQL*Plus 执行脚本时传递参数(@script_name var1,var2)

  下面的帮助信息是关于sqlplus调用带参脚本的说明
  sqlplus -H
  
  <start> is: @<URL>|<filename>[.<ext>] [<parameter> ...]
  
      Runs the specified SQL*Plus script from a web server (URL) or the
      local file system (filename.ext) with specified parameters that
      will be assigned to substitution variables in the script.

SQL> select * from v$version where rownum<2;

BANNER
--------------------------------------------------------------------------------
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production

SQL> insert into emp(empno,ename,job) select 8888,'Bob Cheng','DBA' from dual;

SQL> commit;

[oracle@linux1 ~]$ more test.sql 
set linesize 160
select empno,ename,job from &1 where upper(ename)=upper('&2');
exit;

[oracle@linux1 ~]$ sqlplus scott/tiger@rac11g @test.sql emp scott

old   1: select empno,ename,job from &1 where upper(ename)=upper('&2')
new   1: select empno,ename,job from emp where upper(ename)=upper('scott')

     EMPNO ENAME      JOB
---------- ---------- ---------
      7788 SCOTT      ANALYST

--注意，对于含有空格的调用需要使用单引号或双引号，如下示例
[oracle@linux1 ~]$ sqlplus scott/tiger @test.sql emp 'bob cheng'  

old   1: select empno,ename,job from &1 where upper(ename)=upper('&2')
new   1: select empno,ename,job from emp where upper(ename)=upper('bob cheng')

     EMPNO ENAME      JOB
---------- ---------- ---------
      8888 Bob Cheng  DBA

[oracle@linux1 ~]$ sqlplus scott/tiger @test.sql emp "bob cheng"      

SQL> @test.sql emp scott
SQL> set linesize 160
SQL> select empno,ename,job from &1 where upper(ename)=upper('&2');

     EMPNO ENAME      JOB
---------- ---------- ---------
      7788 SCOTT      ANALYST

SQL> exit;  -->由于脚本中有exit，因此脚本执行后会退出，如果是在SQL提示符下而不需要退出应注释该行

[oracle@linux1 ~]$ more test2.sql
set serveroutput on;
declare
    v_sal  number;
    v_emp  number:=&1;
begin
    select sal into v_sal from emp where empno=&1;
    dbms_output.put_line('The sal is :'||to_char(v_sal));
end;
/
exit; 

[oracle@linux1 ~]$ sqlplus scott/tiger @test2.sql 7788

old   3:     v_emp  number:=&1;
new   3:     v_emp  number:=7788;
old   5:     select sal into v_sal from emp where empno=&1;
new   5:     select sal into v_sal from emp where empno=7788;
The sal is :3000

PL/SQL procedure successfully completed.

SQL> col ename new_value v_name   -->new_value的实质是将得到的结果赋值给v_name以便后续调用
SQL> select ename from emp where empno=7788;

ENAME
----------
SCOTT

SQL> select ename,job,sal from emp where ename='&v_name';
old   1: select ename,job,sal from emp where ename='&v_name'
new   1: select ename,job,sal from emp where ename='SCOTT'

ENAME      JOB              SAL
---------- --------- ----------
SCOTT      ANALYST         3000

--交互式方式使用new_value                      --Author : Robinson Cheng
--下面的脚本是从awrrpti.sql摘取部分片段来展示     --Blog : http://blog.csdn.net/robinson_0612
[oracle@linux1 ~]$ more temp.sql
prompt
prompt Specify the Report Type
prompt ~~~~~~~~~~~~~~~~~~~~~~~
prompt Would you like an HTML report, or a plain text report?
prompt Enter 'html' for an HTML report, or 'text' for plain text
prompt  Defaults to 'html'

column report_type new_value report_type;    -->这个地方定义的new_value是关键
set heading off;
select 'Type Specified: ',lower(nvl('&&report_type','html')) report_type from dual;
set heading on;
prompt "Variable report_type value is :&report_type"

SQL> @temp.sql  -->执行时出现交互提示

Specify the Report Type
~~~~~~~~~~~~~~~~~~~~~~~
Would you like an HTML report, or a plain text report?
Enter 'html' for an HTML report, or 'text' for plain text
Defaults to 'html'
Enter value for report_type: html
old   1: select 'Type Specified: ',lower(nvl('&&report_type','html')) report_type from dual
new   1: select 'Type Specified: ',lower(nvl('html','html')) report_type from dual

Type Specified:  html

"Variable report_type value is :html"   -->变量的值传递给了report_type

--下面的这个脚本来自Tom大师，其中包含了new_value以及替代变量的使用
--通过该例子来体会这两种方式
[oracle@linux1 ~]$ more mystat.sql
set echo off
set verify off
column value new_val V     -->此处使用了new_value方式来传递变量
define S="&1"              -->此处定义了替代变量来接受参数
set autotrace off
select a.name, b.value
from v$statname a, v$mystat b
where a.statistic# = b.statistic#
and lower(a.name) like '%' || lower('&S')||'%'
/
set echo on

--下面是第二个脚本
--在第二个脚本中引用到了前一个脚本定义的变量，如&S，&V。实际上&S是一个全局变量
[oracle@linux1 ~]$ more mystat2.sql
set echo off
set verify off
select a.name, b.value V, to_char(b.value-&V,'999,999,999,999') diff
from v$statname a, v$mystat b
where a.statistic# = b.statistic#
and lower(a.name) like '%' || lower('&S')||'%'
/
set echo on

SQL> @mystat
SQL> set echo off
Enter value for 1: parse time elapsed

NAME                                                        VALUE
------------------------------------------------------ ----------
parse time elapsed                                             83

SQL> update emp set sal=sal+200;

15 rows updated.

SQL> @mystat2
SQL> set echo off linesize 160

NAME                                                            V DIFF
------------------------------------------------------ ---------- ----------------
parse time elapsed                                            117               34