SQL*Loader之CASE10

CASE10

1. SQL脚本

[oracle@node3 ulcase]$ cat ulcase10.sql

rem host write sys$output "Building case 10 demonstration tables.  Please wait"

rem do all cleanup

drop table orders;
drop table customers;
drop type item_list_type;
drop type item_type;
drop type customer_type;

rem Create an ORDER record that has a VARRAY for the items that comprise the
rem order and has a reference field to a record in the CUSTOMER table for
rem the customer placing the order.

rem create customer type

create type customer_type as object (
  cust_no   char(5),
  name      char(20),
  addr      char(20)
);
/

rem create object table for customer type

create table customers of customer_type
        (primary key (cust_no))
        object id primary key;

rem create type for order items

create type item_type as object (
  item      varchar(50),
  cnt       number,
  price     number(7,2)
);
/

rem create varray type for order items

create type item_list_type as varray (1000) of item_type;
/

rem create orders table with varray for items and ref to object table

create table orders (
  order_no      char(5),
  cust          ref customer_type references customers,
  item_list     item_list_type
);

exit;
/

2. 控制文件

[oracle@node3 ulcase]$ cat ulcase10.ctl

-- Copyright (c) 1991, 2004 Oracle.  All rights reserved.
-- NAME
-- ulcase10.ctl - SQL*Loader Case Study 10: Loading REF Fields and VARRAYs
--
-- DESCRIPTION
-- This case study demonstrates the following:
--
-- Loading a customer table that has a primary key as its OID and
-- stores order items in a VARRAY.
--
-- Loading an order table that has a reference to the customer table and
-- the order items in a VARRAY.
--
-- TO RUN THIS CASE STUDY:
-- 1. Before executing this control file, log in to SQL*Plus as
--    scott/tiger. Enter @ulcase10 to execute the SQL script for
--    this case study. This prepares and populates tables and
--    then returns you to the system prompt.
--
-- 2. At the system prompt, invoke the case study as follows:
-- sqlldr USERID=scott/tiger CONTROL=ulcase1.ctl0 LOG=ulcase10.log
--
-- NOTES ABOUT THIS CONTROL FILE
-- cust_no and item_list_count are FILLER fields. The FILLER field is
-- assigned values from the data field to which it is mapped.
--
-- The cust field is created as a REF field.
--
-- item_list is stored in a VARRAY.
--
-- The second occurrence of item_list identifies the datatype of each
-- element of the VARRAY. Here, the datatype is COLUMN OBJECT.
--
-- The listing of item, cnt, price shows all attributes of the column
-- object that are loaded for the VARRAY. The list is enclosed in parentheses.
--
-- The data is contained in the control file and is preceded by the
-- BEGINDATA parameter.
--
LOAD DATA
INFILE *
CONTINUEIF THIS (1) = '*'

INTO TABLE customers
REPLACE
FIELDS TERMINATED BY ","
(
  cust_no                       CHAR,
  name                          CHAR,
  addr                          CHAR
)

INTO TABLE orders
REPLACE
FIELDS TERMINATED BY ","
(
  order_no                      CHAR,
  cust_no             FILLER    CHAR,
  cust                          REF (CONSTANT 'CUSTOMERS', cust_no),
  item_list_count     FILLER    CHAR,
  item_list                     VARRAY COUNT (item_list_count)
  (
    item_list                   COLUMN OBJECT
    (
      item                      CHAR,
      cnt                       CHAR,
      price                     CHAR
    )
  )
)

BEGINDATA
*00001,Spacely Sprockets,15 Space Way,
*00101,00001,2,
*Sprocket clips, 10000, .01,
 Sprocket cleaner, 10, 14.00
*00002,Cogswell Cogs,12 Cogswell Lane,
*00100,00002,4,
*one quarter inch cogs,1000,.02,
*one half inch cog, 150, .04,
*one inch cog, 75, .10,
 Custom coffee mugs, 10, 2.50

执行后结果：

[oracle@node3 ulcase]$ sqlplus scott/tiger @ulcase10.sql

[oracle@node3 ulcase]$ sqlldr userid=scott/tiger control=ulcase10.ctl

SQL> select * from customers;

CUST_ NAME           ADDR
----- -------------------- --------------------
00001 Spacely Sprockets    15 Space Way
00002 Cogswell Cogs       12 Cogswell Lane

SQL> desc orders
 Name                       Null?    Type
 ----------------------------------------- -------- ----------------------------
 ORDER_NO                        CHAR(5)
 CUST                            REF OF CUSTOMER_TYPE
 ITEM_LIST                        ITEM_LIST_TYPE

SQL> select order_no from orders;

ORDER
-----
00101
00100

SQL> select cust from orders;

CUST
--------------------------------------------------------------------------------
00003C038A0038035D767AE692347EE050A8C00D0209980000001726010001000100290000000000
0C0100050100002A00078401FE0000000D053030303031

00003C038A0038035D767AE692347EE050A8C00D0209980000001726010001000100290000000000
0C0100050100002A00078401FE0000000D053030303032

SQL> select item_list from orders;

ITEM_LIST(ITEM, CNT, PRICE)
--------------------------------------------------------------------------------
ITEM_LIST_TYPE(ITEM_TYPE('Sprocket clips', 10000, .01), ITEM_TYPE('Sprocket clea
ner', 10, 14))

ITEM_LIST_TYPE(ITEM_TYPE('one quarter inch cogs', 1000, .02), ITEM_TYPE('one hal
f inch cog', 150, .04), ITEM_TYPE('one inch cog', 75, .1), ITEM_TYPE('Custom cof
fee mugs', 10, 2.5))

查看日志文件：

[oracle@node3 ulcase]$ cat ulcase10.log

SQL*Loader: Release 11.2.0.1.0 - Production on Fri Sep 19 04:02:40 2014

Copyright (c) 1982, 2009, Oracle and/or its affiliates.  All rights reserved.

Control File:   ulcase10.ctl
Data File:      ulcase10.ctl
  Bad File:     ulcase10.bad
  Discard File:  none specified

 (Allow all discards)

Number to load: ALL
Number to skip: 0
Errors allowed: 50
Bind array:     64 rows, maximum of 256000 bytes
Continuation:   1:1 = 0X2a(character '*'), in current physical record
Path used:      Conventional

Table CUSTOMERS, loaded from every logical record.
Insert option in effect for this table: REPLACE

   Column Name                  Position   Len  Term Encl Datatype
------------------------------ ---------- ----- ---- ---- ---------------------
CUST_NO                             FIRST     *   ,       CHARACTER
NAME                                 NEXT     *   ,       CHARACTER
ADDR                                 NEXT     *   ,       CHARACTER            

Table ORDERS, loaded from every logical record.
Insert option in effect for this table: REPLACE

   Column Name                  Position   Len  Term Encl Datatype
------------------------------ ---------- ----- ---- ---- ---------------------
ORDER_NO                             NEXT     *   ,       CHARACTER
CUST_NO                              NEXT     *   ,       CHARACTER
  (FILLER FIELD)
CUST                              DERIVED                 REF
    Arguments are:
        CONSTANT 'CUSTOMERS'
        CUST_NO
ITEM_LIST_COUNT                      NEXT     *   ,       CHARACTER
  (FILLER FIELD)
ITEM_LIST                         DERIVED     *           VARRAY
    Count for VARRAY
        ITEM_LIST_COUNT

*** Fields in ITEM_LIST
ITEM_LIST                         DERIVED     *           COLUMN OBJECT        

*** Fields in ITEM_LIST.ITEM_LIST
ITEM                                FIRST     *   ,       CHARACTER
CNT                                  NEXT     *   ,       CHARACTER
PRICE                                NEXT     *   ,       CHARACTER
*** End of fields in ITEM_LIST.ITEM_LIST

*** End of fields in ITEM_LIST

Table CUSTOMERS:
  2 Rows successfully loaded.
  0 Rows not loaded due to data errors.
  0 Rows not loaded because all WHEN clauses were failed.
  0 Rows not loaded because all fields were null.

Table ORDERS:
  2 Rows successfully loaded.
  0 Rows not loaded due to data errors.
  0 Rows not loaded because all WHEN clauses were failed.
  0 Rows not loaded because all fields were null.

Space allocated for bind array:                 149120 bytes(64 rows)
Read   buffer bytes: 1048576

Total logical records skipped:          0
Total logical records read:             2
Total logical records rejected:         0
Total logical records discarded:        0

Run began on Fri Sep 19 04:02:40 2014
Run ended on Fri Sep 19 04:02:41 2014

Elapsed time was:     00:00:01.33
CPU time was:         00:00:00.23