獲取單個檢視DDL指令碼

declare
 v_text clob;
 v_owner varchar2(30);
 v_view_name varchar2(30);
 v_count number;
 v_loc number;
 v_loc_s number;
 v_len number;
-- select av.view_name,av.owner from all_views av where av.owner='J1_DW' and av.view_name='V_SB_QYSDSNDSSYHQKMXB' 
begin
 v_loc_s :=1;
 v_owner :='J1_DW';
 v_view_name :='V_SB_QYSDSNDSSYHQKMXB';
 SELECT length(dbms_metadata.get_ddl('VIEW',v_view_name,v_owner))-length(replace(dbms_metadata.get_ddl('VIEW',v_view_name,v_owner),chr(10),'')) 
  into v_count
  FROM dual;
 dbms_output.put_line(v_count);
 SELECT length(dbms_metadata.get_ddl('VIEW',v_view_name,v_owner)) into v_len FROM dual;
 for i in 1..v_count loop
--  dbms_output.put_line(i);
  select instr(dbms_metadata.get_ddl('VIEW',v_view_name,v_owner),chr(10),1,i) into v_loc from dual;
  SELECT substr(dbms_metadata.get_ddl('VIEW',v_view_name,v_owner),v_loc_s,v_loc-v_loc_s) INTO V_TEXT from dual;
--  SELECT substr(dbms_metadata.get_ddl('VIEW',v_view_name,v_owner),chr(10),1,1),1,instr(dbms_metadata.get_ddl('VIEW',v_view_name,v_owner),chr(10),1,1)) INTO V_TEXT from dual;
  dbms_output.put_line(replace(v_text,chr(10),''));
--  dbms_output.put_line(v_text);
  v_loc_s :=v_loc;
 end loop;
 SELECT substr(dbms_metadata.get_ddl('VIEW',v_view_name,v_owner),v_loc_s,v_len-v_loc_s+1) INTO V_TEXT from dual;
 dbms_output.put_line(replace(replace(v_text,';','')||';',chr(10),''));
end;
/