applezh提问：
分隔符文件 是否可以指定字段
比如：
分隔符文件中有三个字段，是否将任意两个字段导入表中？
这个问题主要是filler关键字的使用问题，以一个5字段导入3个和测试来回答：
1、在qiuyb用户下建一张表，只包含A,C,E三个字段
SQL> show user
USER is "QIUYB"
SQL> desc t1
Name Null? Type
------------ -------- ---------------
A VARCHAR2(10)
C VARCHAR2(10)
E VARCHAR2(10)
2、包含数据的文件1.txt则有7个字段
$ cat 1.txt
"a","b","c","d","e","f","g"
"aaa","bb","c","d0","eee","f","gg"
"baa","db","f","d1","eee","f","gg"
"caa","eb","g","d2","eee","f","gg"
"daa","fb","h","d3","eee","f","gg"
3、编写control文件，使用filler关键字,把不需要的字段filler掉
$ cat 1.ctl
LOAD DATA
INFILE '1.txt'
INTO TABLE T1
FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"'
(
a char(10),
b filler char(10),
c char(10),
d filler char(10),
e char(10),
f filler char(10),
g filler char(10)
)
4、执行sqlldr操作,可以见到成功导入5条记录
$ sqlldr qiuyb/qiuyb control=1.ctl log=1.log
SQL*Loader: Release 9.2.0.6.0 - Production on Sat Sep 9 12:23:29 2006
Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.
Commit point reached - logical record count 5
5、到库内查询，校验一下。
$ sqlplus qiuyb/qiuyb
SQL*Plus: Release 9.2.0.6.0 - Production on Sat Sep 9 12:24:08 2006
Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.
Connected to:
Oracle9i Enterprise Edition Release 9.2.0.6.0 - 64bit Production
With the Partitioning option
JServer Release 9.2.0.6.0 - Production
SQL> select * from t1;
A C E
---------- ---------- ----------
a c e
aaa c eee
baa f eee
caa g eee
daa h eee
SQL>
<完>
