How to add an update to existing SQL Loader control file? [duplicate]

Question

This question already exists:

How to add an update to an Oracle SQL*Loader control file?

Closed 8 years ago.

How to create an external table from my text file and use that to update to real table, rather than creating a (normal) staging table and using SQL*Loader.

sample.ctl

load data 
infile 'data.txt'
append into table newtable
fields terminated by '|' 
TRAILING NULLCOLS
(ACCOUNTNBR)

data.txt

some raw datas..

54545554
54542145
65656566
58787788

Answer 1

1. The file, info.dat, created with data identified above.

2. Set-up a default directory (which contains the data source) and to grant access to it (need the CREATE ANY DIRECTORY privilege):

   CREATE DIRECTORY ext_tab_dir AS '/usr/apps/datafiles';

   GRANT READ ON DIRECTORY ext_tab_dir TO SCHEMA_OWNER;

3. Create an external table named newtable_load:

   CREATE TABLE newtable_load
   (ACCOUNTNBR NUMBER
   )
      ORGANIZATION EXTERNAL
      (TYPE ORACLE_LOADER
      DEFAULT DIRECTORY default_directory
      ACCESS PARAMETERS
      (RECORDS DELIMITED BY NEWLINE
       FIELDS (ACCOUNTNBR NUMBER)
      )
      LOCATION ('info.dat')
   );
   

4. Load data from the external table newtable_load into the table newtable:

INSERT INTO newtable (ACCOUNTNBR) (SELECT ACCOUNTNBR FROM newtable_load);