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• How to read bfile using dbms_lob.read and not raw characters

  Hi all
  Is it possible to read LOB using DBMS_LOB. READ so that the buffer is displayed in ASCII characters not BELIEVED. Suppose I have the following code:

  --create or replace procedure some_proc is
  declare
  note_clob clob;
  note_bfile bfile;
  note_var raw(10000);
  warning int;
  dest_off int:=1;
  src_off int:=1;
  lang_ctx int:=0;
  amount int:=1500;
  
  begin
  dbms_lob.createtemporary(note_clob,true);
  --note.txt is a text file
  note_bfile:=bfilename('TEMP_DIR','note.txt');
  
  dbms_lob.fileopen(note_bfile);
  dbms_lob.read(note_bfile,amount,1,note_var);
  dbms_lob.fileclose(note_bfile);
  dbms_output.put_line(to_char(note_var));
  
  end;
  /

  The DBMS_OUTPUT. Put_line shows the RAW data instead of its ASCII representation:

  53514C3E2073656C65637420696E7374616E63655F6E616D652C7374617475732C686F73745F6E616D652066726F6D207624
  696E7374616E63653B0D0A0D0A494E5354414E43455F4E414D45092053544154555320202020202020484F53545F4E414D45
  0D0A2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D202D2D2D2D2D2D2D2D2D2D2D2D202D2D2D2D2D2D2D2D2D2D0D0A696E61726109
  09204F50454E0920202020202066697265666C790D0A0D0A53514C3E2073656C656374202A2066726F6D2076247665727369
  6F6E3B0D0A0D0A42414E4E45520D0A2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D
  2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D0D0A4F7261
  636C652044617461626173652031316720456E74657270726973652045646974696F6E2052656C656173652031312E322E30
  2E312E30202D2036346269742050726F64756374696F6E0D0A504C2F53514C2052656C656173652031312E322E302E312E30
  202D2050726F64756374696F6E0D0A434F52450931312E322E302E312E300950726F64756374696F6E0D0A544E5320666F72
  204C696E75783A2056657273696F6E2031312E322E302E312E30202D2050726F64756374696F6E0D0A4E4C5352544C205665
  7273696F6E2031312E322E302E312E30202D2050726F64756374696F6E0D0A0D0A5B6F7261636C654066697265666C795D24
  206C736E7263746C207374617475730D0A0D0A4C534E5243544C20666F72204C696E75783A2056657273696F6E2031312E32
  2E302E312E30202D2050726F64756374696F6E206F6E2031332D4A554E2D323031312031363A30373A32330D0A0D0A436F70
  7972696768742028632920313939312C20323030392C204F7261636C652E2020416C6C207269676874732072657365727665
  642E0D0A0D0A436F6E6E656374696E6720746F20284445534352495054494F4E3D28414444524553533D2850524F544F434F
  4C3D49504329284B45593D45585450524F43313532312929290D0A535441545553206F6620746865204C495354454E45520D
  0A2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D2D0D0A416C696173202020202020202020202020202020202020
  2020204C495354454E45520D0A56657273696F6E20202020202020202020202020202020202020544E534C534E5220666F72
  204C696E75783A2056657273696F6E2031312E322E302E312E30202D2050726F64756374696F6E0D0A537461727420446174
  652020202020202020202020202020202031332D4A554E2D323031312031313A32393A35300D0A557074696D652020202020
  20202020202020202020202020202030206461797320342068722E203337206D696E2E203333207365630D0A547261636520
  4C6576656C2020202020202020202020202020206F66660D0A53656375726974792020202020202020202020202020202020
  204F4E3A204C6F63616C204F532041757468656E7469636174696F6E0D0A534E4D5020202020202020202020202020202020
  2020202020204F46460D0A4C697374656E657220506172616D657465722046696C652020202F7573722F6C6F63616C2F6F72
  61636C652F70726F647563742F31312E322E302F6462686F6D655F312F6E6574776F726B2F61646D696E2F6C697374656E65
  722E6F72610D0A4C697374656E6572204C6F672046696C652020202020202020202F7573722F6C6F63616C2F6F7261636C65
  2F646961672F746E736C736E722F66697265666C792F6C697374656E65722F616C6572742F6C6F672E786D6C0D0A4C697374
  656E696E6720456E64706F696E74732053756D6D6172792E2E2E0D0A2020284445534352495054494F4E3D28414444524553
  533D2850524F544F434F4C3D69706329284B45593D45585450524F43313532312929290D0A2020284445534352495054494F
  4E3D28414444524553533D2850524F544F434F4C3D7463702928484F53543D3132372E302E302E312928504F52543D313532

  Just curious to know if I can do this to DBMS_LOB. READ directly. Another way that I can do is use DBMS_LOB. LOADCLOBFROMFILE and not the DBMS_LOB. READ.
  
  Kind regards
  Val

  Hello
  Try this

    utl_raw.cast_to_varchar2(note_var)
  

  Edited by: user6806750 the 07.10.2011 01:59

• Tricky SQL - is possible using just SQL and not of PL/SQL

  Hi all
  
  Here's my data
  
  create table experience (exp_id number (10), exp_name varchar2 (20), root_exp_id number (10));
  insert into a values (642, 'Test', 5172) experience;
  
  create table experience_node (exp_node_id number (10), exp_node_type_id number (2));
  insert into experience_node values (5172, 1);
  insert into experience_node values (5173, 2);
  insert into experience_node values (5174, 2);
  
  create table experience_connector (exp_conn_id number (10), exp_conn_type_id number (2), exp_node_id number (10), parent_exp_node number (10));
  insert into experience_connector values (1, 5173, 4287 5172);
  insert into experience_connector values (4288, 2, 5174, 5173);
  insert into experience_connector values (2, 5175, 4289 5174);
  
  When you run these queries:
  
  Select parent_experience_node_id
  of experience_connector
  where experience_node_id = 5175;
  
  Select parent_experience_node_id
  of experience_connector
  where experience_node_id = 5174;
  
  Select parent_experience_node_id
  of experience_connector
  where experience_node_id = 5173;
  
  Select parent_experience_node_id
  of experience_connector
  where experience_node_id = 5172;
  
  gives 5174, 5173 and 5172 and null. exp_node_type_id = 1 and exp_node_conn_type_id = 1 indicates that it is at the root. Hope my explanation is useful. Is what I'm trying to get - to get the big concession to 5175 grandparent who is 5172. Is it possible to do it with SQL?
  
  Thank you very much for you help.
  
  Best,
  Lacombe

  user6773 wrote:

  We don't know if the level. There could be any number of levels. Is there any other way around? Thank you once again.

  Well, you say that you need to root, not great great grandparent? If so, use:

  SQL> select  parent_exp_node
    2    from  experience_connector
    3    where connect_by_isleaf = 1
    4    start with exp_node_id = 5175
    5    connect by exp_node_id = prior parent_exp_node
    6  /
  
  PARENT_EXP_NODE
  ---------------
             5172
  
  SQL> 
  

  SY.

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