sqlldr笔记

简介:

 SQLLDR应用举例【转】

 

 
1、普通装载 
LOAD DATA
INFILE *
INTO TABLE DEPT
REPLACE
FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"' 
(DEPTNO,
DNAME,
LOC
)
BEGINDATA
10,Sales,"""USA"""
20,Accounting,"Virginia,USA" 
30,Consulting,Virginia
40,Finance,Virginia
50,"Finance","",Virginia --loc 列将为空
60,"Finance",,Virginia   --loc 列将为空

注:BEGINDATA后的数值前面不能有空格
 

2、TERMINATED BY WHITESPACE 和 FIELDS TERMINATED BY x'09' 的情况 
LOAD DATA 
INFILE * 
INTO TABLE DEPT 
REPLACE 
FIELDS TERMINATED BY WHITESPACE 
--FIELDS TERMINATED BY x'20' 
(DEPTNO,  
DNAME,  
LOC 
) 
BEGINDATA 
10 Sales Virginia
 
注:x'20'表示字符ASCII码的16进制数值

  
3、指定不装载那一列 
LOAD DATA 
INFILE * 
INTO TABLE DEPT 
REPLACE 
FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"' 
(DEPTNO,  
FILLER_1 FILLER, --下面的 "Something Not To Be Loaded" 将不会被装载  
DNAME,  
LOC 
) 
BEGINDATA 
20,Something Not To Be Loaded,Accounting,"Virginia,USA"
  

4、position的列子 
LOAD DATA 
INFILE * 
INTO TABLE DEPT 
REPLACE 
(DEPTNO position(1:2),  
DNAME position(*:16), --这个字段的开始位置在前一字段的结束位置  
LOC position(*:29),  
ENTIRE_LINE position(1:29) 
) 
BEGINDATA 
10Accounting Virginia,USA
  
结果:10 | Accounting Vir | ginia,USA | 10Accounting Virginia,USA
 

5、使用函数日期的一种表达TRAILING NULLCOLS的使用 
LOAD DATA 
INFILE * 
INTO TABLE DEPT
REPLACE
FIELDS TERMINATED BY ','
TRAILING NULLCOLS
--这句的意思是将没有对应值的列都置为null
--如果第一行改为 10,Sales,Virginia,1/5/2000,, 就不用TRAILING NULLCOLS了 
(DEPTNO,  
DNAME "upper(:dname)", --使用函数  
LOC "upper(:loc)",  
LAST_UPDATED date 'dd/mm/yyyy', --日期的一种表达方式。还有'dd-mon-yyyy'等
ENTIRE_LINE ":deptno||:dname||:loc||:last_updated" 
) 
BEGINDATA 
10,Sales,Virginia,1/5/2000 
20,Accounting,Virginia,21/6/1999 
30,Consulting,Virginia,5/1/2000 
40,Finance,Virginia,15/3/2001  
注:可以通过:dname类型调用函数,特别注意date函数的使用。
 

6、 合并多行记录为一行记录

LOAD DATA 
INFILE * 
concatenate 3 --通过关键字concatenate 把几行的记录看成一行记录 
INTO TABLE DEPT 
replace 
FIELDS TERMINATED BY ',' 
(DEPTNO,  
DNAME "upper(:dname)",  
LOC "upper(:loc)",  
LAST_UPDATED date 'dd/mm/yyyy' 
) 
BEGINDATA 
10,Sales,
Virginia,
1/5/2000

注:例如有些文本文件以N行为一循环记录数据,则可以这样导入。
 
 
7、使用continueif来合并记录行
 
上例可直接使用continueif last= ','来告诉Oracle如果前一个数据以','结尾,则这个附加到上一行
 
LOAD DATA 
INFILE * 
continueif last= ','
INTO TABLE DEPT 
replace 
FIELDS TERMINATED BY ',' 
(DEPTNO,  
DNAME "upper(:dname)",  
LOC "upper(:loc)",  
LAST_UPDATED date 'dd/mm/yyyy' 
) 
BEGINDATA 
10,Sales,
Virginia,
1/5/2000
 
注:ContinueIf还可以使用this或next选项,具体操作见文档

8、载入每行的行号  

LOAD DATA 
INFILE * 
INTO TABLE DEPT
replace 
(DEPTNORECNUM //载入每行的行号  
ENTIRE_LINEPosition(1:1024)
) 
BEGINDATA 
fsdfasj     --自动分配行号到DEPTNO字段,此行为1 
fasdjfasdfl --自动递增,此行为2


9、载入有换行符的数据

①使用一个非换行符的字符
LOAD DATA 
INFILE * 
INTO TABLE DEPT 
REPLACE 
FIELDS TERMINATED BY ',' 
TRAILING NULLCOLS 
(DEPTNO, 
DNAME "upper(:dname)", 
LOC "upper(:loc)", 
LAST_UPDATED "my_to_date( :last_updated )", 
COMMENTS "replace(:comments,'%%',chr(10))" --用replace函数转换成换行符 
) 
BEGINDATA 
10,Sales,Virginia,01-april-2001,This is the Sales%%Office in Virginia 
20,Accounting,Virginia,13/04/2001,This is the Accounting%%Office in Virginia 
30,Consulting,Virginia,14/04/2001 12:02:02,This is the Consulting%%Office in Virginia 
40,Finance,Virginia,987268297,This is the Finance%%Office in Virginia
  
注:换行的特殊字符如果使用'\n',则会在Windows编译过程中直接换成换行符,导致无法转换
 

②使用fix属性

Load DATA 
INFILE demo1.dat "fix 68" 
INTO TABLE t1_a 
REPLACE 
FIELDS TERMINATED BY ',' 
TRAILING NULLCOLS 
(DEPTNO, 
DNAME "upper(:dname)", 
LOC "upper(:loc)", 
LAST_UPDATED Date 'dd/mm/yyyy',
ENTIRE_LINE 
)
demo1.dat 
10,aaaab,Virginia,01/05/2001,This is the aaaab
Office in Virginia
20,aaaac,Virginia,13/04/2001,This is the aaaac
Office in Virginia
30,aaaad,Virginia,14/04/2001,This is the aaaad
Office in Virginia
40,aaaae,Virginia,16/02/2001,This is the aaaae
Office in Virginia
 
注:fix只能加在外部文件数据导入时,另外需要每行数据长度都相等。
  
--下面这种方法也一样

Load DATA 
INFILE demo17.dat "fix 70" 
INTO TABLE t1_a 
REPLACE 
FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"' 
TRAILING NULLCOLS 
(DEPTNO,  
DNAME "upper(:dname)",  
LOC "upper(:loc)",  
LAST_UPDATED Date 'dd/mm/yyyy',
ENTIRE_LINE 
)
demo2.dat 
10,aaaab,Virginia,01/05/2001,"This is the aaaab
Office in Virginia"
20,aaaac,Virginia,13/04/2001,"This is the aaaac
Office in Virginia"
30,aaaad,Virginia,14/04/2001,"This is the aaaad
Office in Virginia"
40,aaaae,Virginia,16/02/2001,"This is the aaaae
Office in Virginia" 

③ 使用var属性

Load DATA 
INFILE demo17.dat "var 3" 
INTO TABLE t1_a 
REPLACE 
FIELDS TERMINATED BY ',' 
TRAILING NULLCOLS 
(DEPTNO,  
DNAME "upper(:dname)",  
LOC "upper(:loc)",  
LAST_UPDATED Date 'dd/mm/yyyy',
ENTIRE_LINE 
)
demo17.dat 
03510,Sales,Virginia,01/01/2001,This
03920,Accounting,Virginia,13/04/2001,Thi
04530,Consulting,Virginia,14/04/2001,This is t
07140,Finance,Virginia,14/04/2001,This is the Finance Office
in Virginia

注:var 3 表示前三位用于说明该条记录的长度 (但是谁告诉我长度怎么数的?-_-|||)
 

④使用str属性
  
可使用str来定义一个行结尾符  

计算以|\r\n 结束的值: 
select utl_raw.cast_to_raw('|'||chr(13)||chr(10)) from dual; 
结果 7C0D0A

Load DATA 
INFILE demo17.dat "str X'7C0D0A'" 
INTO TABLE t1_a 
REPLACE 
FIELDS TERMINATED BY ',' 
TRAILING NULLCOLS 
(DEPTNO,  
DNAME "upper(:dname)",  
LOC "upper(:loc)",  
LAST_UPDATED Date 'dd/mm/yyyy',
ENTIRE_LINE 
) 
demo17.dat 
10,Sales,Virginia,01/01/2001,This is the Sales 
Office in Virginia|
20,Accounting,Virginia,13/04/2001,This is the Accounting 
Office in Virginia|
30,Consulting,Virginia,14/04/2001,This is the Consulting 
Office in Virginia|
40,Finance,Virginia,14/04/2002,This is the Finance 
Office in Virginia
 
注意:同样需要在外部文件数据导入中使用,且最后一个不用加;另外注意不要有空格
 
10、nullif导入
 
LOAD DATA
INFILE *
INTO TABLE t1_a
REPLACE
(DEPTNO position(1:2) integer external nullif DEPTNO='1',
--当导入deotno的值为'1'时,则该条记录不导入
DNAME position(3:8)
)
BEGINDATA
1 10
20lg
 
注:需要注意的是在前面指定的数据类型以及后面的引号!
 
 
 
 
 
 
 
==========================================================================================================
 
 
Oracle SQL*Loader 使用指南(转载)
 

如何使用 SQL*Loader 工具

我们可以用Oracle的sqlldr工具来导入数据。例如:
sqlldr scott/tiger control=loader.ctl

控制文件(loader.ctl)将加载一个外部数据文件(含分隔符)
loader.ctl如下:

load data
infile 'c:\data\mydata.csv'
into table emp
fields terminated by "," optionally enclosed by '"'
(empno, empname, sal, deptno)
 
mydata.csv 如下:

10001,"Scott Tiger", 1000, 40
10002,"Frank Naude", 500, 20

下面是一个指定记录长度的示例控制文件。“*” 代表数据文件与此文件同名,即在后面使用BEGINDATA段来标识数据。

load data
infile *
replace
into table departments
( dept position (02:05) char(4),
deptname position (08:27) char(20)
)
begindata
COSC COMPUTER SCIENCE
ENGL ENGLISH LITERATURE
MATH MATHEMATICS
POLY POLITICAL SCIENCE
 
 
Unloader这样的工具

Oracle没有提供将数据导出到一个文件的工具。但是我们可以用SQL*Plus的select及 format 数据来输出到一个文件:

set echo off newpage 0 space 0 pagesize 0 feed off head off trimspool on
spool oradata.txt
select col1 || ',' || col2 || ',' || col3
from tab1
where col2 = 'XYZ';
spool off
 
另外,也可以使用使用 UTL_FILE PL/SQL 包处理:

rem Remember to update initSID.ora, utl_file_dir='c:\oradata' parameter
declare
fp utl_file.file_type;
begin
fp := utl_file.fopen('c:\oradata','tab1.txt','w');
utl_file.putf(fp, '%s, %s\n', 'TextField', 55);
utl_file.fclose(fp);
end;
/
 
当然你也可以使用第三方工具,如SQLWays ,TOAD for Quest等。
 
 
加载可变长度或指定长度的记录
LOAD DATA
INFILE *
INTO TABLE load_delimited_data
FIELDS TERMINATED BY "," OPTIONALLY ENCLOSED BY '"'
TRAILING NULLCOLS
(data1,
data2
)
BEGINDATA
11111,AAAAAAAAAA
22222,"A,B,C,D,"
 
下面是导入固定位置(固定长度)数据示例:

LOAD DATA
INFILE *
INTO TABLE load_positional_data
(data1 POSITION(1:5),
data2 POSITION(6:15)
)
BEGINDATA
11111AAAAAAAAAA
22222BBBBBBBBBB
 
跳过数据行:

可以用 "SKIP n" 关键字来指定导入时可以跳过多少行数据。如:
LOAD DATA
INFILE *
INTO TABLE load_positional_data
SKIP 5 --似乎不行?需要在DOS层级下操作才有效
(data1 POSITION(1:5),
data2 POSITION(6:15)
)
BEGINDATA
11111AAAAAAAAAA
22222BBBBBBBBBB
 
导入数据时修改数据:

在导入数据到数据库时,可以修改数据。注意,这仅适合于常规导入,并不适合 direct导入方式.如:

LOAD DATA
INFILE *
INTO TABLE modified_data
(rec_no "my_db_sequence.nextval",
region CONSTANT '31',
time_loaded "to_char(SYSDATE, 'HH24:MI')",
data1 POSITION(1:5) ":data1/100",
data2 POSITION(6:15) "upper(:data2)",
data3 POSITION(16:22)"to_date(:data3, 'YYMMDD')"
)
BEGINDATA
11111AAAAAAAAAA991201
22222BBBBBBBBBB990112
 
LOAD DATA
INFILE 'mail_orders.txt'
BADFILE 'bad_orders.txt'
APPEND
INTO TABLE mailing_list
FIELDS TERMINATED BY ","
(addr,
city,
state,
zipcode,
mailing_addr "decode(:mailing_addr, null, :addr, :mailing_addr)",
mailing_city "decode(:mailing_city, null, :city, :mailing_city)",
mailing_state
)
 
 
将数据导入多个表:

如:
LOAD DATA
INFILE *
REPLACE
INTO TABLE emp
WHEN empno != ' '
( empno POSITION(1:4) INTEGER EXTERNAL,
ename POSITION(6:15) CHAR,
deptno POSITION(17:18) CHAR,
mgr POSITION(20:23) INTEGER EXTERNAL
)
INTO TABLE proj
WHEN projno != ' '
( projno POSITION(25:27) INTEGER EXTERNAL,
empno POSITION(1:4) INTEGER EXTERNAL
)
 
导入选定的记录:

如下例: (01) 代表第一个字符, (30:37) 代表30到37之间的字符:
LOAD DATA
INFILE 'mydata.dat' BADFILE 'mydata.bad' DISCARDFILE 'mydata.dis'
APPEND
INTO TABLE my_selective_table
WHEN (01) <> 'H' and (01) <> 'T' and (30:37) = '19991217'
(
region CONSTANT '31',
service_key POSITION(01:11) INTEGER EXTERNAL,
call_b_no POSITION(12:29) CHAR
)
 
导入时跳过某些字段:

可用 POSTION(x:y) 来分隔数据. 在Oracle8i中可以通过指定 FILLER 字段实现。FILLER 字段用来跳过、忽略导入数据文件中的字段.如:
LOAD DATA
TRUNCATE INTO TABLE T1
FIELDS TERMINATED BY ','
( field1,
field2 FILLER,
field3
)
 
导入多行记录:

可以使用下面两个选项之一来实现将多行数据导入为一个记录:
 
CONCATENATE: - use when SQL*Loader should combine the same number of physical records together to form one logical record.
CONTINUEIF - use if a condition indicates that multiple records should be treated as one. Eg. by having a '#' character in column 1.
 
SQL*Loader 数据的提交:

一般情况下是在导入数据文件数据后提交的。
也可以通过指定 ROWS= 参数来指定每次提交记录数。
 
提高 SQL*Loader 的性能:

1) 一个简单而容易忽略的问题是,没有对导入的表使用任何索引和/或约束(主键)。如果这样做,甚至在使用ROWS=参数时,会很明显降低数据库导入性能。
2) 可以添加 DIRECT=TRUE来提高导入数据的性能。当然,在很多情况下,不能使用此参数。
3) 通过指定 UNRECOVERABLE选项,可以关闭数据库的日志。这个选项只能和 direct 一起使用。
4) 可以同时运行多个导入任务.
 
常规导入与direct导入方式的区别:
常规导入可以通过使用 INSERT语句来导入数据。Direct导入可以跳过数据库的相关逻辑(DIRECT=TRUE),而直接将数
 
 
 
============================================================================

控制根据数据不同插入不同的表
包括文件:日志文件;控制文件;坏记录文件;废弃记录文件(when)
控制文件:
load data
1说明输入文件 infile后根文件名.默认扩展名为’.dat’
infile=’accounts’
用单引号’ 括起文件名accounts.dat
2处理选项discardfile badfile
load data
infile ‘accounts’ discardfile mtidsc.rec badfile mthad.rec
3目标对象—–表
slqloader的用户必要有insert的权限.into table 开头
into table account_trans
when day between ‘01′ and ‘31′
into table account_nbr
when account_type between ‘aa’ and ‘zz’  这样可以根据条件插入不同的表
4目标对象—-分区表或者某个分区
into table sale partition(east_data)…..
如果一次装在所有分区,可以用目标对象—-表的方法进行处理 into table sale….
5记录生成模式—Insert,Replace,Append
Insert–缺省模式,装在之前,table必须为空表;;
Replace –先删除所有记录,然后装在满足when条件的行;(需要delete的权限)
Append–表中原有记录保存,加入新的行.;;

处理定长记录
load data
infile ‘account.dat’
into table count_trans append
when year=’1990′
(account_nbr position(01:10) character,
day position(11:12) character,
month position(13:14) character,
transaction_code position(15:16) character,
credit_amount position(17:30) character)
into table count replace
when year>’1990′
(account_nbr position(01:10) character,
day position(11:12) character,
month position(13:14) character,
transaction_code position(15:16) character,
credit_amount position(17:30) character)

处理变长记录(从access到oracle)
分隔符:概念.在一行中将一项信息与另一项信息分离开的一个字符标记.
load data
infile ‘customer.dat’
into table aa append
(customer_id char terminated by ‘ ‘,
status char terminated by ‘ ‘,
dsc_class char enclosed by ‘ ‘,
source char terminated by whitespace)
1>单引号分割.末尾的信息项不已逗号结束,用关键字whitespace

FIELDS TERMINATED BY x’09′ (制表符)

LOAD DATA
INFILE *
INTO TABLE DEPT1
REPLACE
FIELDS TERMINATED BY X’09′
(DEPTNO,
DNAME,
LOC
)
BEGINDATA
10 Sales Virginia
by x’09′遇见一个制表符.它将输出一个直 也就是在制表符之间的数据
SVRMGR> host sqlldr scott/scott control=c:control.txt
SQL*Loader: Release 8.1.7.0.0 - Production on 星期六 8月 24 21:04:26 2002
(c) Copyright 2000 Oracle Corporation. All rights reserved.
达到提交点,逻辑记录计数1
SVRMGR> select *from dept1;
DEPTNO DNAME LOC
———- ————– ————-
10 Sales
已选择 1 行。

使用filler 跳过 在导入数据文本中不想进行导入的列

demo
LOAD DATA
INFILE *
INTO TABLE DEPT
REPLACE
FIELDS TERMINATED BY ‘,’
(DEPTNO,
DNAME “upper(:dname)”,
LOC “upper(:loc)”,
LAST_UPDATED date ‘dd/mm/yyyy’
)
BEGINDATA
10,Sales,Virginia,1/5/2000
20,Accounting,Virginia,21/6/1999
30,Consulting,Virginia,5/1/2000
40,Finance,Virginia,15/3/2001

u can see upper functions
sqlldr is a tool that can parse input variables and form its insert sql using bind values.
like normal controlfile
FIELDS TERMINATED BY ‘,’
(DEPTNO,
DNAME ,
LOC ,
LAST_UPDATED date
)
oracle’s sqlldr change it equal insert into table values(:deptno,:dname,:loc,:last_updated);
when load data sqlldr parse each record row and bind variables
once parse else execute!

so like
(DEPTNO,
DNAME “upper(:dname)”,
LOC “upper(:loc)”,
LAST_UPDATED date ‘dd/mm/yyyy’
)
sql : insert into table values(:deptno,upper(name),upper(:loc),:last_updated )
the ” LAST_UPDATED date ‘dd/mm/yyyy’ ” inside date ‘dd/mm/yyyy’ is only the variable ’s datatype not functions
u can aslo use function to_date() then it deference

SVRMGR> host sqlldr scott/scott control=control.txt
SQL*Loader: Release 8.1.7.0.0 - Production on 星期日 8月 25 00:46:04 2002
(c) Copyright 2000 Oracle Corporation. All rights reserved.
达到提交点,逻辑记录计数4
SVRMGR> select *from dept1;
DEPTNO DNAME LOC LAST_UPDA
———- ————– ————- ———
10 SALES VIRGINIA 01-5月 -0
20 ACCOUNTING VIRGINIA 21-6月 -9
30 CONSULTING VIRGINIA 05-1月 -0
40 FINANCE VIRGINIA 15-3月 -0
已选择4行。

TRAILING NULLCOLS

my compute just down i lose some article yet not been submit
i am so lazy not want to repeat just go on topic
about trailing nullcols
see the control file just TRAILING NULLCOls the purpose of our sqlldr is explicit. we want to load entire_line into table but it doesn’t exist in BEGINDATA segements .
so oracle provide a flag TRAILING NULLCOLS IF U DON’T USE IT ALL ROWS WILL BE DISCARD INTO DISCARD FILE IF U appoint it u shoud try what i said in no using TRAILING NULLCOLS mode

LOAD DATA
INFILE *
INTO TABLE DEPT
REPLACE
FIELDS TERMINATED BY ‘,’
TRAILING NULLCOLS
(DEPTNO,
DNAME “upper(:dname)”,
LOC “upper(:loc)”,
LAST_UPDATED date ‘dd/mm/yyyy’,
ENTIRE_LINE “:deptno||:dname||:loc||:last_updated”
)
BEGINDATA
10,Sales,Virginia,1/5/2000
20,Accounting,Virginia,21/6/1999
30,Consulting,Virginia,5/1/2000
40,Finance,Virginia,15/3/2001

let’s goon
TRAILING NULLCOLS for u to appoint the last column a value “NULL” so in begindata it form a noexist column with value null
do it
SVRMGR> select *from dept1;
DEPTNO DNAME LOC LAST_UPDA ENTIRE_LINE
———- ————– ————- ——— ——————————
10 SALES VIRGINIA 01-5月 -0 10SalesVirginia1/5/2000
40 FINANCE VIRGINIA 15-3月 -0 40FinanceVirginia15/3/2001
20 ACCOUNTING VIRGINIA 21-6月 -9 20AccountingVirginia21/6/1999
30 CONSULTING VIRGINIA 05-1月 -0 30ConsultingVirginia5/1/2000
已选择4行。
SVRMGR>

sqlldr with function is powerful magic

power function CASE When…..END relation discard file
just provide a controlf file
lazy to do it
———————————————–
LOAD DATA
INFILE *
INTO TABLE DEPT
REPLACE
FIELDS TERMINATED BY ‘,’
TRAILING NULLCOLS
(DEPTNO,
DNAME “upper(:dname)”,
LOC “upper(:loc)”,
LAST_UPDATED “case when length(:last_updated) <= 10
then to_date(:last_updated,’dd/mm/yyyy’)
else to_date(:last_updated,’dd/mm/yyyy hh24:mi:ss’)
end”
)
BEGINDATA
10,Sales,Virginia,1/5/2000 12:03:03
20,Accounting,Virginia,21/6/1999
30,Consulting,Virginia,5/1/2000 01:23:00
40,Finance,Virginia,15/3/2001

sometimes customer give our data.txt date format are too different so we have ablility to create own functions
BEGINDATA
10,Sales,Virginia,01-april-2001
20,Accounting,Virginia,13/04/2001
30,Consulting,Virginia,14/04/2001 12:02:02
40,Finance,Virginia,987268297
50,Finance,Virginia,02-apr-2001
60,Finance,Virginia,Not a date

i copy a good fucniton from TOM
create or replace
function my_to_date( p_string in varchar2 ) return date
as
type fmtArray is table of varchar2(25);
l_fmts fmtArray := fmtArray( ‘dd-mon-yyyy’, ‘dd-month-yyyy’,
‘dd/mm/yyyy’,
‘dd/mm/yyyy hh24:mi:ss’ );
l_return date;
begin
for i in 1 .. l_fmts.count
loop
begin
l_return := to_date( p_string, l_fmts(i) );
exception
when others then null;
end;
EXIT when l_return is not null;
end loop;
if ( l_return is null )
then
l_return :=
new_time( to_date(’01011970′,’ddmmyyyy’) + 1/24/60/60 *
p_string, ‘GMT’, ‘EST’ );
end if;
return l_return;
end;
/

use of it if other format it would in bad file we kan reload it

使用sqlldr 应该注意的问题

1 不能选择使用哪个回滚段
装载的时候 使用replace 来slqldr时候 在装载之前,它会发出delete命令 这样将产生大量的回滚. 为了实现这个操作 你可能想要指定sqlldr使用一个特定的回滚段

你必须保证任何一个回滚段有足够的长度来容纳delete 或者使用truncate 选项 由于insert并没有产生过多的回滚,因为它只写 rowid into redo 理解没有问题吧??

2truncate选项 为truncate table t reuse storage

SQLLDR默认输入流为数据类型为CHAR 长度为 255 所以当 begindata section里面的 输入流 长于255 的时候会报错的
应该是 Record N Rejected Eorr for columnn
field in data file exceed max length

sqlldr希望你输入小于255字节或更少字节的数据,而获得的比这要多,解决的方法是在控制文件中只是单纯地使用 char(N) n是可以包括你输入列地最大长度

比方说load long类型 地时候 可以 输入 char(10000) ^_^

就到这里 大家如果发现有什么bug 请贴出来 thx

LOAD DATA
INFILE *
INTO TABLE DEPT
REPLACE
FIELDS TERMINATED BY ‘,’ OPTIONALLY ENCLOSED BY ‘”‘
( DEPTNO,
FILLER_1 FILLER, //see it filler
DNAME,
LOC
)
BEGINDATA
20,Something Not To Be Loaded,Accounting,”Virginia,USA”
当装载数据时候 需要在输入记录中跳过各种不同的列是非常普通的

例如你想 装入 1.3.5列 跳过2.4列 可以利用filler
它可以让我们在数据流里面指定一个列 不把他放到数据库中
SVRMGR> host sqlldr scott/scott control=c:control.txt
SQL*Loader: Release 8.1.7.0.0 - Production on 星期六 8月 24 21:16:52 2002
(c) Copyright 2000 Oracle Corporation. All rights reserved.
达到提交点,逻辑记录计数1
SVRMGR> select *from dept1;
DEPTNO DNAME LOC
———- ————– ————-
20 Accounting Virginia,USA



本文转自zylhsy 51CTO博客,原文链接:http://blog.51cto.com/yunlongzheng/1086083,如需转载请自行联系原作者

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