Question

CREATE or replace FUNCTION  f
return integer
AS;
BEGIN 
  return (select count(*) from exemplo); 
END ;

select f() from dual;

当我执行功能时，请给我这个错误：

ORA-06575: Package or function F is in an invalid state

Answer 1

编译函数时，客户端会说：

Warning: Function created with compilation errors.

或

Function F compiled

Errors: check compiler log

如果您正在使用SQL * Plus或SQL Developer（可能还有其他客户端，但它们可能有自己的等效客户端），那么您可以show errors查看错误：

LINE/COL ERROR
-------- -----------------------------------------------------------------
3/3      PLS-00103: Encountered the symbol ";" when expecting one of the following:
         begin function pragma procedure subtype type <an identifier>
         <a double-quoted delimited-identifier> current cursor delete
         exists prior external language

或者您可以查询user_errors视图以查看相同的信息。

在AS之后删除分号，然后报告：

LINE/COL ERROR
-------- -----------------------------------------------------------------
5/11     PLS-00103: Encountered the symbol "SELECT" when expecting one of the following:
         ( - + case mod new not null <an identifier>
         <a double-quoted delimited-identifier> <a bind variable>
         continue avg count current exists max min prior sql stddev
         sum variance execute forall merge time timestamp interval
         date <a string literal with character set specification>
         <a number> <a single-quoted SQL string> pipe
         <an alternatively-quoted string literal with character set specification>
         <an alternat
5/39     PLS-00103: Encountered the symbol ")" when expecting one of the following:
         . , @ ; for <an identifier>
         <a double-quoted delimited-identifier> group having intersect
         minus order partition start subpartition union where connect
         sample

您无法直接返回查询结果。您需要一个局部变量来选择到，然后返回;类似的东西：

CREATE or replace FUNCTION  f
return integer
AS
  l_count pls_integer;
BEGIN 
  select count(*) into l_count from exemplo;
  return l_count; 
END ;
/

Answer 2

运行alter session set nls_language = 'English';以获取英文错误消息。

功能必须如下：

CREATE or replace FUNCTION  f return integer AS
   ret INTEGER;
BEGIN 
   select count(*) INTO ret from exemplo; 
   return ret;
END;

ORA-06575：包或函数F处于无效状态

2 个答案: