欢迎进入Oracle社区论坛,与200万技术人员互动交流 >>进入 1、控制文件中注释用"--". 2、为防止导入出现中文乱码,在控制文件中加入字符集控制 LOAD DATA CHARACTERSET ZHS16GBK 3、让某一列成为行号,用RECNUM关键字 load data infile * into table t repla
欢迎进入Oracle社区论坛,与200万技术人员互动交流 >>进入
1、控制文件中注释用"--".
2、为防止导入出现中文乱码,在控制文件中加入字符集控制
LOAD DATA
CHARACTERSET ZHS16GBK
3、让某一列成为行号,用RECNUM关键字
load data
infile *
into table t
replace
( seqno RECNUM //载入每行的行号
text Position(1:1024))
BEGINDATA
fsdfasj
4、过滤某一列,用FILLER关键字
LOAD DATA
TRUNCATE INTO TABLE T1
FIELDS TERMINATED BY ','
( field1,
field2 FILLER,
field3
)
5、过滤行
在INTO TABLE table_name后加WHEN过滤条件,但功能有限,如果以竖线分隔符的文件,不能实现字段级的过滤,定长的还好。
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) = '20031217'
(
region CONSTANT '31',
service_key POSITION(01:11) INTEGER EXTERNAL,
call_b_no POSITION(12:29) CHAR
)
6、过滤首行,用OPTIONS (SKIP 1)选项,也可以写在命令行中,如:
sqlldr sms/admin cOntrol=test.ctl skip=1
7、TRAILING NULLCOLS的使用,作用是表的字段没有对应的值时允许为空
如:
LOAD DATA
INFILE *
INTO TABLE DEPT
REPLACE
FIELDS TERMINATED BY ','
TRAILING NULLCOLS // 其实下面的ENTIRE_LINE在BEGINDATA后面的数据中是没有直接对应的列的值的如果第一行改为 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
8、添加、修改数据
(1)、
LOAD DATA
INFILE *
INTO TABLE tmp_test
( 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
(2)、
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
)
9、合并多行记录为一行记录
通过关键字concatenate 把几行的记录看成一行记录:
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, // 其实这3行看成一行 10,Sales,Virginia,1/5/2000
Virginia,
1/5/2000
10、用"|+|"分隔符,避免数据混淆:fields terminated by "|+|"
11、如果数据文件包含在控制文件中,用INFILE *
如下:
LOAD DATA
INFILE *
append
INTO TABLE tmp_test
FIELDS TERMINATED BY ","
OPTIONALLY ENCLOSED BY '"'
TRAILING NULLCOLS
( data1,
data2
)
BEGINDATA
11111,AAAAAAAAAA
22222,"A,B,C,D,"
12、一次导入多个文件到同一个表
LOAD DATA
INFILE file1.dat
INFILE file2.dat
INFILE file3.dat
APPEND
INTO TABLE emp
( empno POSITION(1:4) INTEGER EXTERNAL,
ename POSITION(6:15) CHAR,
deptno POSITION(17:18) CHAR,
mgr POSITION(20:23) INTEGER EXTERNAL
)
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