oracle - 调用 Oracle PL/SQL PLS-00201：必须声明标识符“001”

Question

我正在尝试使用以下标头调用 PL/SQL 脚本：

PL/SQL：

CREATE OR REPLACE PROCEDURE GETQUOTE(i_QUOTEID IN HR.QUOTEID,
                                     o_QUOTE OUT HR.QUOTE)

执行命令：

DECLARE c VARCHAR2(100);

BEGIN

  HR.GETQUOTE("001", c);

END;
/

错误：

declare
c varchar2(100);
begin
HR.GETQUOTE("001", c);
end;

ORA-06550: line 4, column 29:
PLS-00201: identifier '001' must be declared
ORA-06550: line 4, column 1:
PL/SQL: Statement ignored

Answer 1

You are using the wrong types of quotes. If you want 001 to be string literal, you need to use single quotes.

Try this:

SELECT '001' FROM dual;

SELECT "001" FROM dual;

Answer 2

使用单引号：

然后

检查第一个值是否是过程中的字符串而不是数字。你也可以尝试 to_number('001') 作为参数

Answer 3

Try this :

declare c varchar2(100);

begin    
  hr.getquote('001', c);    
end;    
/

In pl/sql single quotes must be used for strings.