ORACLE 查所值 在所有資料庫中那些欄位出現過,

DECLARE
  match_count integer;
  v_search_string varchar2(4000) :='%MYSTR%';
BEGIN 
  FOR t IN (SELECT owner, table_name, column_name FROM all_tab_columns WHERE DATA_TYPE ='CHAR' ) LOOP  
    EXECUTE IMMEDIATE   
      'SELECT COUNT(*) FROM '||t.owner || '.' || t.table_name||
      ' WHERE '||t.column_name||' like :1'  
       INTO match_count 
      USING v_search_string;
    IF match_count > 0 THEN
      dbms_output.put_line( t.owner || '.' || t.table_name ||' '||t.column_name||' '||match_count );
    END IF;
  END LOOP;
END;

我這只查出  DATA_TYPE='CHAR' 請依需求改成 VARCHAR2 NUMBER....等等.