Re: Data source for SQLLOADER

From: Yass Khogaly <ykhogaly_at_us.oracle.com>
Date: Fri, 26 Nov 1999 08:35:57 -0800
Message-ID: <81m99l$o64$1_at_inet16.us.oracle.com>

Hi,

You can use scripts to output your data from an Oracle table to a flat file :

--

• dump a table to a comma delimited ASCII file
• only drawback is line length is likely to be padded with
• quite a few spaces if the 'set trimspool on' option is
• not in your version of SQLPLUS
  --
  
• also builds a control file and a parameter file for SQL*LOADER

  set trimspool on
  set serverout on
  clear buffer
  undef dumpfile
  undef dumptable
  undef dumpowner
  var maxcol number
  var linelen number
  var dumpfile char(40)
  col column_id noprint
  set pages0 feed off termout on echo off verify off   accept dumpowner char prompt 'Owner of table to dump: '   accept dumptable char prompt 'Table to dump: '   begin

          select max(column_id) into :maxcol
          from all_tab_columns
          where table_name = rtrim(upper('&dumptable'))
          and owner = rtrim(upper('&dumpowner'));
          select sum(data_length) + ( :maxcol * 3 ) into :linelen
          from all_tab_columns
          where table_name = rtrim(upper('&dumptable'))
          and owner = rtrim(upper('&dumpowner'));

  end;
  /
  print linelen
  print maxcol
  spool ./_dump.sql

  select 'set trimspool on' from dual;
  select 'set termout off pages 0 heading off echo off' from dual;
  select 'set line ' || :linelen from dual;
  select 'spool ' || lower('&dumptable') || '.txt' from dual;
  select 'select' || chr(10) from dual;
  select '   ' || '''' || '"'  || '''' || ' || ' ||
          'replace(' || column_name || ',' || '''' ||  '"' || '''' || ') '
          || ' ||' || '''' || '",' || '''' || ' || ',
          column_id

  from all_tab_columns
  where table_name = upper('&dumptable')   and owner = upper('&dumpowner')
  and column_id < :maxcol
  union

  select '   ' || '''' || '"'  || '''' || ' || ' ||
          'replace(' || column_name  || ',' || '''' ||  '"' || '''' || ') '
      || ' ||' || '''' || '"' || '''',
          column_id

  from all_tab_columns
  where table_name = upper('&dumptable')   and owner = upper('&dumpowner')
  and column_id = :maxcol
  order by 2
  /

  select 'from &dumpowner..&dumptable' from dual;
  select '/' from dual;
  select 'spool off' from dual;

  spool off
  _at_@_dump
  set line 79

• build a basic control file spool _dtmp.sql select 'spool ' || lower('&dumptable') || '.par' from dual; spool off _at_@_dtmp

  select 'userid = /' || chr(10) ||

     'control = ' || lower('&dumptable') || '.ctl' || chr(10) ||
          'log = ' || lower('&dumptable') || '.log' || chr(10) ||
          'bad = ' || lower('&dumptable')|| '.bad' || chr(10)

  from dual;
  spool _dtmp.sql
  select 'spool ' || lower('&dumptable') || '.ctl' from dual;   spool off
  _at_@_dtmp
  select 'load data' || chr(10) ||

        'infile ' || ''''|| lower('&dumptable') || '.txt' || '''' ||   chr(10) ||

        'into table &dumptable' || chr(10) ||
          'fields terminated by ' || '''' || ',' || '''' ||
          'optionally enclosed by ' || '''' || '"' || '''' || chr(10)

  from dual;
  select '(' from dual;
  select ' ' || column_name || ',' ,

          column_id
  from all_tab_columns
  where table_name = upper('&dumptable')   and owner = upper('&dumpowner')
  and column_id < :maxcol
  union
  select ' ' || column_name, column_id   from all_tab_columns
  where table_name = upper('&dumptable')   and owner = upper('&dumpowner')
  and column_id = :maxcol
  order by 2
  /
  select ')' from dual;
  exit

<newbie22_at_my-deja.com> wrote in message news:81m7jd$eit$1_at_nnrp1.deja.com...

[Quoted] > HI all,
>
[Quoted] > I'm familiar with importing data with SQLLOADER.
>
> But now I'm wondering,
> where does the source data come from?
>
> I can't find any SQLLOADER commands to unload the
> data from tables.  Can SQLLOADER unload the data?
>
> Which Oracle utility/command would unload the data to a
> Unix flat file?
>
> Cheers,
>
> Argosy
>
>
>
>
>
>
> Sent via Deja.com http://www.deja.com/
> Before you buy.

Received on Fri Nov 26 1999 - 17:35:57 CET