Oracle

Question

基本上，我不想被问到这样的值::

SQL> select &test from dual;
Enter value for test:

我只想在脚本中声明 &test，类似于：

&test varchar2(100):= 'some value'; --of course, this don't work.

Answer 1

执行

SQL> set define off

在运行您的代码之前。

SQL> select '&test' from dual;

'&TES
-----
&test

SQL>

如果你想“声明”它，那么使用var:

SQL> var test varchar2(200);
SQL> exec :test := 'some value';

PL/SQL procedure successfully completed.

SQL> print test

TEST
----------------------------------------------------------------------------------------------------
some value

SQL>

动态 SQL：我不会锁定任何人，但是 - 我会更改我的密码。

SQL> connect scott/tiger
Connected.
SQL> var test varchar2(200);
SQL> exec :test := 'lion';

PL/SQL procedure successfully completed.

SQL> print test

TEST
----------------------------------------------------------------------------------------------------
lion

SQL> begin
  2    execute immediate 'alter user scott identified by ' || :test;
  3  end;
  4  /

PL/SQL procedure successfully completed.

SQL> connect scott/tiger
ERROR:
ORA-01017: invalid username/password; logon denied


Warning: You are no longer connected to ORACLE.
SQL> connect scott/lion
Connected.
SQL>

Oracle - 如何在不询问值的情况下使用 &？

Oracle - How to use & without being asked about the value?

plsql

sqlplus