Question

CREATE OR REPLACE TYPE record_AB AS OBJECT
   (
      AA    VARCHAR2 (32767 BYTE),
      BB    VARCHAR2 (32767 BYTE)
   );
    /

CREATE OR REPLACE TYPE type_tab_AB IS TABLE OF record_AB;
    /


SQL> VARIABLE curs1 REFCURSOR;
SQL> 
SQL> DECLARE
  2  tab_AB   type_tab_AB;
  3  begin
  4  select  system.record_AB(t.owner,t.table_name) bulk collect into tab_AB from dba_tables t where compression='ENABLED' and compress_for='OLTP';
  5  open :curs1 for select * from table(tab_AB) ;
  6  end;
  7  /

PL/SQL procedure successfully completed.

SQL> select * from dba_segments where (owner,segment_name) in ( select :curs1 from dual);
select * from dba_segments where (owner,segment_name) in ( select :curs1 from dual)

ERROR at line 1:
ORA-00947: not enough values

我需要提供游标curs1的aa，bb列的值作为owner和segment_name的输入，有人可以告诉我们如何实现这个吗？

Answer 1

您无法选择游标变量，只能打开，获取和关闭它。你想要实现什么目标？这里根本不需要使用引用光标：

select * from dba_segments 
where (owner,segment_name) in 
( select t.owner,t.table_name 
  from dba_tables t 
  where compression='ENABLED' 
  and compress_for='OLTP');

但是，如果您的代码的目的是使用ref游标，而不是查看分段数据，那么这个答案可能不是您想要的。

使用表格：

create table enabled_oltp_tables as
select t.owner,t.table_name 
from dba_tables t 
where compression='ENABLED' 
and compress_for='OLTP';

select * from dba_segments 
where (owner,segment_name) in 
( select t.owner,t.table_name 
  from enabled_oltp_tables t
);

Answer 2

您好。刚刚完成了这个问题。以为你可以尝试一下这个。如果有帮助，请告诉我

--Create object type
CREATE OR REPLACE TYPE record_AB
AS
  OBJECT
  (
    AA VARCHAR2 (32767 BYTE),
    BB VARCHAR2 (32767 BYTE) );

--Create table type
CREATE OR REPLACE TYPE type_tab_AB
IS
  TABLE OF record_AB;

--Plsql block to perform action 
  var ref_c refcursor;
  DECLARE
    tab_AB type_tab_AB;
  BEGIN
    SELECT record_AB(t.owner,t.table_name) bulk collect
    INTO tab_AB
    FROM all_tables t
    WHERE compression='ENABLED';
    OPEN :ref_c FOR SELECT * FROM dba_segments WHERE (owner,segment_name) IN
    ( SELECT t.aa,t.bb FROM TABLE(tab_AB) t
    );
  END;

  Print ref_c;

无法从游标变量传递列值以选择查询

2 个答案: