Question

我期待这个查询的结果

select cursor (select *
                 from Dba_Source
                where Owner = 'ORD'
                  and Upper(Text) Like ob)
  from (select '''%' || object_name || '%''' ob
          from dba_objects
         where owner = 'ORD'
           and object_name = 'ORD_USERS');

由于ORD架构中的某个存储过程使用了表ORD_USERS。

有人可以让我知道什么是错的吗？

当我单独运行这些查询时，它们会返回

之类的结果

select '''%' || object_name || '%''' ob
  from dba_objects
 where owner = 'ORD' and object_name = 'ORD_USERS';

'%ORD_USERS%'

select *
  from Dba_Source
 where Owner = 'ORD'
   and Upper(Text) like '%ORD_USERS%';

Owner Name     Type          Line  Text
----- -------- ------------- ----- ---------------
ORD   ORD_PKG  PACKAGE_BODY  126   FROM ORD_USERS,

Answer 1

希望以下示例能够为您展示问题和解决方案：

with sample_data as (select 'fredbobgeorge' str from dual union all
                     select '''fredbobgeorge''' str from dual)
select 'with quoted like' search_type,
       str
from   sample_data
where  str like (select '''%bob%''' from dual)
union all
select 'without quoted like' search_type,
       str
from   sample_data
where  str like (select '%bob%' from dual);

SEARCH_TYPE         STR            
------------------- ---------------
with quoted like    'fredbobgeorge'
without quoted like fredbobgeorge  
without quoted like 'fredbobgeorge'

选择光标查询

1 个答案: