如何在where子句中包含USER_VIEWS.TEXT列

DBMS_METADATA

USER_DEPENDENCIES

ALL_DEPENDENCIES

DBA_DEPENDENCIES

SQL> create table base_table (
  2    col1 number
  3  );

Table created.

SQL> create view my_view
  2  as
  3  select *
  4    from base_table;

View created.

SQL> select name, type
  2    from user_dependencies
  3   where referenced_name = 'BASE_TABLE';

NAME                           TYPE
------------------------------ ------------------
MY_VIEW                        VIEW

USER_DEPENDENCIES

SQL> create view my_view2
  2  as
  3  select *
  4    from my_view;

View created.

SQL> ed
Wrote file afiedt.buf

  1  select level, name, type
  2    from user_dependencies
  3  start with referenced_name = 'BASE_TABLE'
  4* connect by referenced_name = prior name
SQL> /

     LEVEL NAME                           TYPE
---------- ------------------------------ ------------------
         1 MY_VIEW                        VIEW
         2 MY_VIEW2                       VIEW

create table my_tab as
select to_lob(text) from user_views;