Bulk insert in an external table

Similar Questions

• Direct load in external tables

  Can we use direct load in external tables? or set DIRECTLY in the external table script?
  
  Thank you.

  polasa wrote:
  Can we use direct load in external tables? or set DIRECTLY in the external table script?

  Thank you.

  N ° why? Because an external table does not load data. It's more like a pointer and an instruction how to read a file.

  The big difference between SQL Loader and an external table, SQL Loader is actually two things.

  (a) it reads a file from the file system
  (b) it inserts these values into a table in the database.

  An external table only one).

  However, you can do a quick insertion of this external table in an actual database table so that is sought.

  insert /*+append */ into myRealTable (colA, ColB, colC)
  select  * from myExternalTable
  

  Append it and perhaps also the parallel indication will be close to a direct path insert.

• With the help of external Tables

  HELO - I have a few questions regarding the use of external tables, as I have not worked with them before.
  
  From what I read, looks like they are more intended instead of SQL Loader, to simply load the data. But I was wondering if they are also used for queries. I ask because we usually create temporary tables to load the data provided by the company and we then attach this information to our main tables. The file that we just received is more 3 million lines, so I was wondering if it might be appropriate to use an external table and also, I can query this external table directly or will it still my temporary table as well.
  
  In addition, it's the syntax that I found to create an external table and I was wondering if something escapes me.
  

  SQL> create table xtern_empl_rpt
    2      ( empl_id varchar2(3),
    3        last_name varchar2(50),
    4        first_name varchar2(50),
    5        ssn varchar2(9),
    6       email_addr varchar2(100),
    7        years_of_service number(2,0)
    8      )
    9      organization external
   10      ( default directory xtern_data_dir
   11        access parameters
   12        ( records delimited by newline
   13          fields terminated by ','
   14        )
   15        location ('employee_report.csv')  
   16    );

  I appreciate all the comments...
  
  Thank you!
  Christine

  Hello

  Based on what I read

  It would be good to know what you have read sofar and where...

  I can query this external table directly

  Yes, once you have created.
  An external table allows to process a file as if it were a table.
  Don't forget that you can query only, you can not the update/delete/insert in an external table.

  You can find many examples by searching on this forum,
  or http://asktom.oracle.com
  (for example: http://asktom.oracle.com/pls/asktom/f?p=100:11:0:::P11_QUESTION_ID:6611962171229))
  or http://www.oracle-base.com/articles/9i/ExternalTables9i.php
  or the Oracle Documentation @ http://tahiti.oracle.com

• Use with need to collect in bulk to insert records from multiple tables

  Hello

  I plsql record type with several tables with multiple columns. so when I used bulk collect with education for ALL. I want to insert records in multiple tables.

  Please give me suggestions.

  ForAll is designed to be used with a single DML statement, which may include dynamic SQL statements. However, I do not know what advantage this will give you your list iteration save several times, one for each table - especially since there is an air show with SQL dynamic.

  Example 1 (dynamic SQL):

  begin

    ...

    forall i in vRecList.First..vRecList.Last
    execute immediate '
    begin
      insert into Table1 (Col1, Col2, Col3) values (:1, :2, :3);
      insert into Table2 (Col1, Col2, Col3) values (:1, :2, :3);
    end;' using vRecList(i).Col1, vRecList(i).Col2, vRecList(i).Col3;
end;

  Another approach that I should work (but not tested) is using to insert all the Scriptures and based record inserts, but you need to try on your version of Oracle forall has changed between the versions.  In this case vRecList must be compatible with the Table % ROWTYPE and Table2% ROWTYPE type.

  
  

  Example 2 (insert all):

  begin

    ...

    forall i in vRecList.First..vRecList.Last

      insert all

        into Table1 values vRecList(i)
      into Table2 values vRecList(i)
    select 1 from dual;
end;

• Performance issue Bulk Insert PL/SQL table type

  Hi all
  
  I put in work of a batch to fill a table with a large number of data records(>3,000,000). To reduce the execution time, I used PL/SQL tables to temporarily store data that must be written to the destination table. Once all documents are piling up in the PL/SQL table I use a FORALL operator for bulk insert the records in the physical table.
  
  Currently, I follow two approaches to implement the process described above. (Please see the code segments below). I need to choose how to best wise performance between these two approaches. I really appreciate all the comments of experts about the runtime of the two approaches.
  
  (I don't see much difference in consumption of time in my test environment that has limited the data series. This process involves building a complex set of structures of large product once deployed in the production environment).
  
  
  Approach I:_
  DECLARE
  TYPE of test_type IS test_tab % ROWTYPE directory INDEX TABLE;
  test_type_ test_type.
  ins_idx_ NUMBER;
  BEGIN
  ins_idx_: = 1;
  NESTED LOOPS
  test_type_ (ins_idx_) .column1: = value1;
  test_type_ (ins_idx_) .column2: = value2;
  test_type_ (ins_idx_) .column3: = value3;
  ins_idx_: = ins_idx_ + 1;
  END LOOP;
  
  I_ FORALL in 1.test_type_. COUNTY
  INSERT INTO test_tab VALUES (i_) test_type_;
  END;
  /
  
  
  Approach II:_
  DECLARE
  Column1 IS a TABLE OF TYPE test_tab.column1%TYPE INDEX DIRECTORY.
  Column2 IS a TABLE OF TYPE test_tab.column2%TYPE INDEX DIRECTORY.
  Column3 IS a TABLE OF TYPE test_tab.column3%TYPE INDEX DIRECTORY.
  column1 column1_;
  column2_ Column2;
  column3_ Column3;
  ins_idx_ NUMBER;
  BEGIN
  ins_idx_: = 1;
  NESTED LOOPS
  column1_ (ins_idx_): = value1;
  column2_ (ins_idx_): = value2;
  column3_ (ins_idx_): = value3;
  ins_idx_: = ins_idx_ + 1;
  END LOOP;
  
  FORALL idx_ in 1.column1_. COUNTY
  INSERT
  IN n_part_cost_bucket_tab)
  Column1,
  Column2,
  Column3)
  VALUES)
  column1_ (idx_),
  column2_ (idx_),
  column3_ (idx_));
  END;
  /
  
  Best regards
  Lorenzo
  
  Published by: nipuna86 on January 3, 2013 22:23

  nipuna86 wrote:

  I put in work of a batch to fill a table with a large number of data records(>3,000,000). To reduce the execution time, I used PL/SQL tables to temporarily store data that must be written to the destination table. Once all documents are piling up in the PL/SQL table I use a FORALL operator for bulk insert the records in the physical table.

  Performance is more than just reducing the execution time.

  Just as smashing a car stops more than a car in the fastest possible time.

  If it was (breaking a car stopping all simply), then a brick with reinforced concrete wall construction, would have been the perfect way to stop all types of all sorts of speed motor vehicles.

  Only problem (well more than one actually) is that stop a vehicle in this way is bad for the car, the engine, the driver, passengers and any other content inside.

  And pushing 3 million records in a PL/SQL 'table' (btw, that is a WRONG terminology - there no PL/SQL table structure) in order to run a SQL cursor INSERT 3 million times, to reduce the execution times, is no different than using a brick wall to stop a car.

  Both approaches are pretty well imperfect. Both places an unreasonable demand on the memory of the PGA. Both are still row-by-row (aka slow-by-slow) treatment.

• Bulk insert table

  Hello
  Version 10g
  
  I need to get an array of 100 recordings in pl/sql procedure.
  The table is built on columns.
  Then I need bulk insert into the table.
  
  Question: Is it possible to get a table in the stored procedure?
  
  Thank you

  Yes you can get it. Check the code below.

  SQL> create type trec is object (a number, b number);
    2  /
  
  Type created.
  
  SQL> create type tlist is table of trec;
    2  /
  
  Type created.
  
  SQL> create table coltab(col1 number, col2 number, entry_date date);
  
  Table created.
  
  SQL> ed
  Wrote file afiedt.buf
  
    1  create or replace procedure arraytest (p tlist) is
    2  begin
    3  for i in p.first..p.last
    4  loop
    5  insert into coltab values
    6  (p(i).a,p(i).b,sysdate);
    7  end loop;
    8* end;
  SQL> /
  
  Procedure created.
  
  -----------Testing--------------------
  SQL> declare
    2  l tlist := tlist(trec(1,2),trec(4,3));
    3  begin
    4  arraytest(l);
    5  end;
    6  /
  
  PL/SQL procedure successfully completed.
  
  SQL>
  SQL>
  SQL> select * from coltab;
  
        COL1       COL2 ENTRY_DAT
  ---------- ---------- ---------
           1          2 04-AUG-10
           4          3 04-AUG-10
  

  If you do not use the concept of line, try this. This works in a similar way.

   create or replace procedure arraytest (p tlist) is
   begin
   insert into coltab
   select t1.*, sysdate from table(p) t1;
  end;
  /
  

• Bulk Insert for more than 50 columns of one table to another.

  Hi all

  I have two Source and target tables that are the same in structure, and I need the Source Table Insert into the target Table.

  Source and the target Table is to have about 60 columns. And Volumn of data in the Source Table is about 1 Cr.

  Previously, someone wrote the Simple insertion as

  INSERT INTO TARGET_TBL (C1, C2, C3, C4... C60)

  (SELECT C1, C2, C3, C4... TARGET_TAB C60);

  And it will not work for this a large part of the data. Could you please suggest the best approach to do this.

  Thanks in advance.

  
  

  Hello..

  This will not work for that much of the data

  Tips for use as APPEND... See below link for direct loading

  Direct-load INSERT

  Try the below

  ALTER session enable parallel dml.

  INSERT / * + append parallel (6) * / INTO TARGET_TBL (C1, C2, C3, C4... C60)

  (SELECT C1, C2, C3, C4... TARGET_TAB C60);

• Bulk insert fired through forall

  Hi all
  
  in the following statement:

  declare 
  
  cursor C is select id,PEOPLE_ID from CN_ITEMS;
  type T_A is table of cn_items%rowtype;
  
  V_A T_A;
   
  begin
  open c;
  LOOP
  
  
   fetch c bulk collect into v_a;
    
  forall  I in V_A.first..V_A.last  
  
   
    
      insert into CN_TAXES(id,CREATION_DATE,TAX_PRICE,ITEM_ID,PEOPLE_ID) 
                   values (CN_TAX_S.NEXTVAL, sysdate,10.5,v_a.id(i),v_a.people_id(i));
        
    exit when c%notfound;
  end loop;
  end;
  /

  I get the message:

  ORA-06550: line 13, column 2:
  PLS-00394: wrong number of values in the INTO list of a FETCH statement
  ORA-06550: line 13, column 2:
  PL/SQL: SQL Statement ignored
  ORA-06550: line 20, column 61:
  PLS-00302: component 'ID' must be declared
  ORA-06550: line 20, column 71:
  PLS-00302: component 'PEOPLE_ID' must be declared
  ORA-06550: line 20, column 71:
  PLS-00302: component 'PEOPLE_ID' must be declared
  ORA-06550: line 20, column 67:
  PL/SQL: ORA-00904: "V_A"."PEOPLE_ID": invalid identifier
  ORA-06550: line 19, column 5:
  PL/SQL: SQL Statement ignored
  06550. 00000 -  "line %s, column %s:\n%s"
  *Cause:    Usually a PL/SQL compilation error.
  *Action:

  Any ideas how to use in this situation FORALL? If I select all values in a table and then I use FORALL to insert them into another table with the same columns are ok, but here I want to just use the values to get insert them into 2 columns in another table.
  
  
  Version: 11g
  
  
  
  Thanks in advance,
  Bahchevanov.

  >
  Any ideas how to use in this situation FORALL? If I select all values in a table and then I use FORALL to insert them into another table with the same columns are ok
  >
  You answered your own question. The solution is exactly what you just said above
  >
  Select all values in a table and then I use FORALL to insert them into another table with the same columns
  >
  The first error you receive

  PLS-00394: wrong number of values in the INTO list of a FETCH statement
  

  because of this code

  cursor C is select id,PEOPLE_ID from CN_ITEMS;
  type T_A is table of cn_items%rowtype;
  

  Your T_A variable is based on the CN_ITEMS table, but since you use a slider you should base on the slider

  cursor C is select id,PEOPLE_ID from CN_ITEMS;
  type T_A is table of C%rowtype;
  

  You are also selection ID but never use it. And you have an EXTERNAL loop, but did not use a LIMIT clause. A straight line in BULK COLLECT collect at a time so there is no purpose for the outer loop. But you should always use a clause limit rather than any which implied.

  So if you must use a collection in bulk (even if your specific should use pure SQL) and to solve your problem change the code for this

  cursor C is select CN_TAX_S.NEXTVAL, sysdate, 10.5,PEOPLE_ID from CN_ITEMS;
  type T_A is table of C%rowtype;
  

  In other words, just build a line that will correspond to your target table. Then, you can use the FORALL to insert the entire line to the time (note the LIMIT clause)

  LOOP
   fetch c bulk collect into v_a LIMIT 1000;
  forall  I in V_A.first..V_A.last
      insert into CN_TAXES(id,CREATION_DATE,TAX_PRICE,ITEM_ID,PEOPLE_ID)
                   values (V_A(I));
    exit when c%notfound;
  end loop;
  

• Load the XML file into Oracle external Table

  
  I load the data from the XML file into an intermediate table Oracle using external Tables.

  Let's say below, it is my XML file

  < header >
  < A_CNT > 10 < / A_CNT >
  < E_CNT > 10 < / E_CNT >
  < AF_CNT > 10 < / AF_CNT >
  < / header >
  < student >
  <>students-details
  < Student_info >
  < Single_Info >
  < ID > 18 / < ID >
  New York < City > < / City >
  < country > United States < / country >
  < Name_lst >
  < Student_name >
  Samuel < name > < / name >
  Paul < Last_name > < / Last_name >
  < DOB > 19871208 < / DOB >
  Aware of < RecordStatus > < / RecordStatus >
  < / Student_name >
  < Student_name >
  Samuel < name > < / name >
  Paul < Last_name > < / Last_name >
  < DOB > 19871208 < / DOB >

  < TerminationDt > 20050812 < / TerminationDt >
  History of < RecordStatus > < / RecordStatus >
  < / Student_name >
  < / Name_lst >
  < Personal_Info >
  <>men < / Type >
  < 27 > < / Age >
  < / Personal_Info >
  < / Single_Info >
  < / Student_info >

  < student - register >
  class < A >
  < info >
  < detail >
  < ID student > 18 < / student >
  EE < major > < / Major >
  < course-Grades >
  < course > VLSI < / course >
  < degree > 3.0 < / Grade >
  < / course-Grades >
  < course-Grades >
  < course > nanotechnology < / course >
  < degree > 4.0 < / Grade >
  < / course-Grades >
  < / details >
  < detail >
  < ID student > 18 < / student >
  THIS < major > < / Major >
  < / details >
  < / info >
  class < A >
  < Student_Enrol >
  <>students-details
  < student >

  I load this XML data file into a single table using an external Table. Could someone help me please with coding.

  Thank you

  Reva

  Could you please help me how to insert my XML content into that.

  Same as before, try a plain old INSERT:

  insert into xml_pecos

  values)

  XmlType (bfilename ('XML_DIR', "test.xml"), nls_charset_id ('AL32UTF8'))

  );

  But you'll probably hit the same limitation as with the binary XMLType table.

  In this case, you can use FTP to load the file as a resource in the XML DB repository.

  If the XML schema has been registered with the hierarchy enabled then the file will be automatically inserted into the table.

  Could you post the exact statement that you used to save the scheme?

  In the meantime, you can also read this article, I did a few years ago, it covers the XML DB features that may be useful here, including details on how to load the file via FTP:

  https://odieweblog.WordPress.com/2011/11/23/Oracle-XML-DB-a-practical-example/

  And documentation of the course: http://docs.oracle.com/cd/E11882_01/appdev.112/e23094/xdb06stt.htm#ADXDB4672

• Loading external Table with quotes

  I have a file with fields in the file are as TAB delimiter ~ TAB.

  Example as below:

  QM ~ CD ~ Exzm ~ BMW

  DM ~ BD ~ Exzm ~ BMW

  CREATE TABLE test

  (

  Col_1 VARCHAR2 (100),

  Col_2 VARCHAR2 (100),

  Col_3 VARCHAR2 (100),

  Col_4 VARCHAR2 (100)

  )

  EXTERNAL ORGANIZATION

  (TYPE ORACLE_LOADER

  DEFAULT DIRECTORY 'Test_Report '.

  ACCESS SETTINGS

  (records delimited by '\n'

  CHARACTERSET 'UTF8 '.

  fields terminated by '\t~\t '.

  missing field values are null

  )

  LOCATION ("test.asc")

  )

  REJECT LIMIT UNLIMITED;

  OUTPUT:

  ----------------

  Data loaded in DB, but col_4 data comes from the quotation as below

  col_4

  -------

  "BMW".

  "BMW".

  Note: Col1 - col3 data arrives correctly.

  2807064 wrote:

  A finding on my side.

  I found that the values of Col_4 after inserting into DB with "transport return character" (CHR (13)) at the end of each value as shown below when I copy paste the value in notepad ++ "»

  Example:

  ----------

  "BMW".

  "

  But if I see the file I saw that BMW.

  My question is, in this case the external table loading must fail right? Why is this it is to load data in DB?

  Do you have this file begin life on windows, and then are transferred to * nix to serve an external table?  If so, which explains a lot.  Windows is the standard record delimiter x '0d0a' (Chr (13) 10)  On * nix, it's just x '0A' (10.  When the process of loader is scanning for record delimiter he's just looking for the '0A' x and x'd 0' gets included in the data.

  Two solutions-

  1 - Make sure that the data file is transferred so that the Records delimiters are converted.  It's supposed to to happen with ascii ftp mode, but this week I saw several examples in the House of it does not.

  2. attach your table definition external to seek the delimiter of actual recording instead of the default value of the operating system. == RECORDS DELIMITED BY X '0D0A '.

• How to select the csv data stored in a BLOB column as if it were an external table?

  Hi all

  (Happy to be back after a while! )

  Currently I am working on a site where users should be able to load the data of csv (comma is the separator) of their client machines (APEX 3.2 application) in the Oracle 11.2.0.4.0 EE database.

  My problem is:

  I can't use an external table (for the first time in my life ) so I'm a little clueless what to do as the csv data is stored by the application of the APEX in a BLOB column, and I'm looking for an elegant way (at least SQL PL/SQL/maximization) to insert the data into the destination table (run validations by a MERGER would be the most effective way to do the job).

  I found a few examples, but I think they are too heavy and there could be a more elegant way in Oracle DB 11.2.

  Simple unit test:

  drop table CBC purge;

  drop table dst serving;

  create table src

  (myblob blob

  );

  create table dst

  (num number

  , varchar2 (6) str

  );

  Insert in src

  Select utl_raw.cast_to_raw (1; AAAAAA ;'|| Chr (10) |

  2; BATH; »

  )

  Double;

  Desired (of course) output based on the data in table SRC:

  SQL > select * DST;

  NUM STR

  ---------- ------

  1 ABDELKRIM

  2 BATH

  Does anybody know a solution for this?

  Any ideas/pointers/links/examples are welcome!

  / * WARNING: I was 'off' for about 3 months, then the Oracle - the part of my brain has become a bit "rusty and I feel it should not be so complicated as the examples I've found sofar ' * /"

  Haha, wonder about regexp is like the blind leading the blind!

  However, it's my mistake: I forgot to put the starting position setting (so 1, 2, 3,... was in fact the starting position, not the nth occurrence. duh!)

  So, it should actually be:

  select x.*
  ,      regexp_substr(x.col1, '[^;]+', 1, 1)
  ,      regexp_substr(x.col1, '[^;]+', 1, 2)
  ,      regexp_substr(x.col1, '[^;]+', 1, 3)
  ,      regexp_substr(x.col1, '[^;]+', 1, 4)
  ,      regexp_substr(x.col1, '[^;]+', 1, 5)
  ,      regexp_substr(x.col1, '[^;]+', 1, 6)
  from  src
  ,      xmltable('/a/b'
                passing xmltype(''||replace(conv_to_clob(src.myblob), chr(10), '')||'')
                columns
                  col1 varchar2(100) path '.') x;
  

  Note: that's assuming that all the "columns" passed in the string won't be lame.

  If one of them might be null, then:

  select x.*
  ,      regexp_substr(ltrim(x.col1, ';'), '[^;]+', 1, 1)
  ,      regexp_substr(ltrim(x.col1, ';'), '[^;]+', 1, 2)
  ,      regexp_substr(ltrim(x.col1, ';'), '[^;]+', 1, 3)
  ,      regexp_substr(ltrim(x.col1, ';'), '[^;]+', 1, 4)
  ,      regexp_substr(ltrim(x.col1, ';'), '[^;]+', 1, 5)
  ,      regexp_substr(ltrim(x.col1, ';'), '[^;]+', 1, 6)
  from   src
  ,      xmltable('/a/b'
                passing xmltype(replace(';'||replace(conv_to_clob(src.myblob), chr(10), ';')||'', ';;', '; ;'))
                columns
                  col1 varchar2(100) path '.') x;
  

• SQL * Loader vs external tables to a single file with several types of records (intercalated)

  I have a file of sample data (we will have the a 'true' at a later date and put in day after that) which includes a header, footer, and 5 types of records, that have different columns and lengths, noticed by the first two characters. The different types of records are not all together. On the contrary, some (in particular, two of these types in this example) are intertwined. I am currently working on a SQL * Loader configuration file when it was suggested that I use external tables. I know very little of either, then I would ask what is the best to use.

  Scott@orcl12c > host type test.dat

  header line

  AB, 123, efg

  CD, hij, 456

  Scott@orcl12c > type host test.ctl

  options (Skip = 1)

  load data

  in the ab table truncate where table_name = 'ab'

  fields ended by ',' trailing nullcols

  (table_name filler position (1), col1, col2)

  in the cd table add where table_name = 'cd'

  fields ended by ',' trailing nullcols

  (table_name filler position (1), col3, col4)

  Scott@orcl12c > create table ab

  2 (col1 number,

  3 col2 varchar2 (8))

  4.

  Table created.

  Scott@orcl12c > insert into ab values (1, 'old data')

  2.

  1 line of creation.

  Scott@orcl12c > create table cd

  2 (col3 varchar2 (8))

  3 col4 number)

  4.

  Table created.

  Scott@orcl12c > insert into cd values ("old data", 1).

  2.

  1 line of creation.

  Scott@orcl12c > commit

  2.

  Validation complete.

  Scott@orcl12c > host sqlldr scott/tiger control = test.ctl data = test.dat log = test.log

  SQL * Loader: release 12.1.0.1.0 - Production on Thu Mar 27 13:11:47 2014

  Copyright (c) 1982, 2013, Oracle and/or its affiliates.  All rights reserved.

  Path used: classics

  Commit the point reached - the number of logical records 2

  Table AB:

  1 row loaded successfully.

  Table D:

  1 row loaded successfully.

  Check the log file:

  test.log

  For more information on the charge.

  Scott@orcl12c > select * AB

  2.

  COL1 COL2

  ---------- --------

  EFG 123

  1 selected line.

  Scott@orcl12c > select * from cd

  2.

  COL3 COL4

  -------- ----------

  old data 1

  hij 456

  2 selected lines.

• Create an external table to import csv to dynamic action

  Hello
  
  I'm trying to import data from a csv file into a table. The csv is located on the server and I try to do an external table to copy its contents to the master data table.
  I can't even save the code, without this error:

  PLS-00103: Encountered the symbol "CREATE" when expecting one of the following:
  ( begin case declare exit for goto if loop mod null pragma raise return select update
  while with <an identifier> <a double-quoted delimited-identifier> <a bind variable>
  << continue close current delete fetch lock insert open rollback savepoint set sql execute
  commit forall merge pipe purge

  It works very well in the SQL Developer.

  CREATE TABLE  "DATA_CSV" 
     (     "C1" VARCHAR2(255), 
       "C2" VARCHAR2(255), 
       "C3" VARCHAR2(255), 
       "C4" VARCHAR2(255), 
       "C5" VARCHAR2(255), 
       "C6" VARCHAR2(255), 
       "C7" VARCHAR2(255), 
       "C8" VARCHAR2(255), 
       "C9" VARCHAR2(255), 
       "C10" VARCHAR2(255), 
       "C11" VARCHAR2(255), 
       "C12" VARCHAR2(255), 
       "C13" VARCHAR2(255), 
       "C14" VARCHAR2(255), 
       "C15" VARCHAR2(255), 
       "C16" VARCHAR2(255), 
       "C17" VARCHAR2(255), 
       "C18" VARCHAR2(255), 
       "C19" VARCHAR2(255), 
       "C20" VARCHAR2(255)
     )
      ORGANIZATION EXTERNAL
      (
        TYPE ORACLE_LOADER
        DEFAULT DIRECTORY FTP_FOLDER
        ACCESS PARAMETERS (
          records delimited BY newline
          fields terminated BY ';'
          optionally enclosed BY '"'
          lrtrim
          missing field VALUES are NULL
        )
      LOCATION ('foo.csv')
      );
  {code}
  
  The server I work on, runs on Apex 4.2.2.
  
  Thanks in advance, for your help
  Skirnir                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    

  
  

• LTRIM in an external Table definition.

  Hello
  
  We use the Oracle 11.2.
  
  Because there is little documentation on the Web on no general external Table definitions, I would like to put this question out there.
  
  How can I insert a Ltrim function in an external table definition?

  Hello

  Here is an example that works on my system:

  CREATE TABLE     table_x
  (       num_id          NUMBER (2)
  ,     string_id     VARCHAR2 (2)
  ,     txt          VARCHAR2 (12)
  )
  ORGANIZATION EXTERNAL
  (     TYPE               oracle_loader
       DEFAULT DIRECTORY     my_dir
       ACCESS PARAMETERS (
                      RECORDS DELIMITED BY NEWLINE
                      FIELDS  (     num_id          CHAR (1)
                           ,     string_id     CHAR (2)
                           ,     txt          CHAR (12)     LTRIM
                           )
                          )
       LOCATION       ('table_x.txt')
  );
  

  Where the data file looks like this:

  1 A    abcdefgh
  1 A    ijklmnop
  1 A     pqrstuv
  1 B    abcdefgh
  1 B      ijklmn
  2 A    abcdefgh
  3 C          hi
  3 C       world
  

  With this example data, the LENGTH (string_id) is always 2 (in other words, each string_id begins with a space), but LENGTH (txt) varies from 2 to 8.

  I hope that answers your question.
  If not, post your CREATE TABLE statement (simplified as much as possible, but always with the same problem) and a few lines of the data file corresponding.

• Logging what data inserted in the outer table

  Hello
  
  We load a large number of data using external tables and inserts into tables partitioned by day nor the hour.
  
  Other parts of the system want to know what partitions have been updated and when, so before load us all the data, we make a
  

  insert into new_data(date_of_event) values (select distinct(trunc(date_of_event) from external_table)

  That's when inserting into partitions of day, IE get all separate days of that specific file.
  
  These files, however, can be very substantial and after this first analysis, we do a full insertion in to the correct data table, that is, read the entire file again.
  
  So my question is, is there another (better) way to retrieve the different days/times? A way to make the effective insertion in the table of data and information on which partitions Oracle inserted data into any dictionary etc.?
  
  Haven't tried creating a 'good' temp-table, insert the data into it, extraction of dates and then inserting to the actual data table. But then, what is the best, creating a table and a fall or read the file twice?
  
  Thanks in advance

  You don't say how you are querying and inserting, but if you have a control on a few possibilities come to mind.

  1. use INSERT ALL make a multi-table insert. Insert the "date_of_event" into a new "Journal" table and insert data to the table that you insert now.
  Then you can make the separate (trunc (date_of_event) "select" on the new table of newspaper. Just truncate the new log table before each query or add a column that contains the file that was imported.

  2. create a VIEW that includes all the columns in your current query and another copy of "date_of_event" and peel the date of the event in another table.

  Option #1 is the simplest.

  See ALL INSERT in SQL Reference: http://docs.oracle.com/cd/B28359_01/server.111/b28286/statements_9014.htm