导读:1建站知识本文将详细介绍如何用sqlldr装载数,需要了解更多的朋友可以参考下网站建设哪家好高端网站建设。

这里用 excel 数据做个最简单的测试。 1）把 excel 数据存为 t.txt 文件，注意文件后缀名为 .txt 1 jhchen 11/07/2005 20:04:00 2005-11-7 20:04 2 jhchen 11/07/2005 20:04:00 2005-11-7 20:04 3 jhchen 11/07/2005 20:04:00 2005-11-7 20:04 2）SQL> create table t_load( id number, name varchar2(10), dat1 date, dat2 date, dat3 date ); Table created. 3）控制文件 t.ctl 如下 load data infile 't.txt' badfile 't.bad' append into table t_load fields terminated by X'09'　　 trailing nullcols ( id , name , dat1 date "mm/dd/yyyy hh24:mi:ss", dat2 date "yyyy-mm-dd hh24:mi:ss" ) 其中，X'09' 是制表符，TAB键，trailing nullcols 表示如表的字段没有对应的值时允许为空。 4）C:\Documents and Settings\cjh>sqlldr userid=jhchen/oracle control=t.ctl SQL*Loader: Release 9.2.0.6.0 - Production on 星期一 11月 7 20:20:00 2005 Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved. 达到提交点，逻辑记录计数3 5）SQL> select * from t_load; ID NAME DAT1 DAT2 DAT3 ---------- ---------- --------- --------- --------- 1 jhchen 07-NOV-05 07-NOV-05 2 jhchen 07-NOV-05 07-NOV-05 3 jhchen 07-NOV-05 07-NOV-05 sqlldr userid=lgone/tiger control=a.ctl LOAD DATA INFILE 't.dat' // 要导入的文件 // INFILE 'tt.date' // 导入多个文件 // INFILE * // 要导入的内容就在control文件里 下面的BEGINDATA后面就是导入的内容 INTO TABLE table_name // 指定装入的表 BADFILE 'c:\bad.txt' // 指定坏文件地址 ************* 以下是4种装入表的方式 APPEND // 原先的表有数据 就加在后面 // INSERT // 装载空表 如果原先的表有数据 sqlloader会停止 默认值 // REPLACE // 原先的表有数据 原先的数据会全部删除 // TRUNCATE // 指定的内容和replace的相同 会用truncate语句删除现存数据 *************seo网站排名优化软件 指定的TERMINATED可以在表的开头 也可在表的内部字段部分 FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"' // 装载这种数据: 10,lg,"""lg""","lg,lg" // 在表中结果: 10 lg "lg" lg,lg // TERMINATED BY X '09' // 以十六进制格式 '09' 表示的 // TERMINATED BY WRITESPACE // 装载这种数据: 10 lg lg TRAILING NULLCOLS ************* 表的字段没有对应的值时允许为空 ************* 下面是表的字段 ( col_1 , col_2 ,col_filler FILLER // FILLER 关键字 此列的数值不会被装载 // 如: lg,lg,not 结果 lg lg ) // 当没声明FIELDS TERMINATED BY ',' 时 // ( // col_1 [interger external网站优化seo培训] TERMINATED BY ',' , // col_2 [date "dd-mon-yyy"] TERMINATED BY ',' , // col_3 [char] TERMINATED BY ',' OPTIONALLY ENCLOSED BY 'lg' // ) // 当没声明FIELDS 百度seo网站优化TERMINATED BY ','用位置告诉字段装载数据 // ( // col_1 position(1:2), // col_2 position(3:10), // col_3 position(*:16), // 这个字段的开始位置在前一字段的结束位置 // col_4 position(1:16), // col_5 position(3:10) char(8) // 指定字段的类型 // ) BEGINDATA // 对应开始的 INFILE * 要导入的内容就在control文件里 10,Sql,what 20,lg,show ===================================================================================== //////////// 注意begindata后的数值前面不能有空格 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 2 ***** FIELDS 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'09' (DEPTNO, DNAME, LOC ) BEGINDATA 10 Sales Virginia 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 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 // 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 6 ***** 使用自定义的函数 // 解决的时间问题 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; / 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 )" // 使用自定义的函数 ) 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 7 ***** 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, // 其实这3行看成一行 10,Sales,Virginia,1/5/2000 Virginia, 1/5/2000 // 这列子用 continueif list="," 也可以 告诉sqlldr在每行的末尾找逗号 找到逗号就把下一行附加到上一行 LOAD DATA INFILE * continueif this(1:1) = '-' // 找每行的开始是否有连接字符 - 有就把下一行连接为一行 // 如 -10,Sales,Virginia, // 1/5/2000 就是一行 10,Sales,Virginia,1/5/2000 // 其中1:1 表示从第一行开始 并在第一行结束 还有continueif next 但continueif list最理想 INTO TABLE DEPT replace FIELDS TERMINATED BY ',' (DEPTNO, DNAME "upper(:dname)", LOC "upper(:loc)", LAST_UPDATED date 'dd/mm/yyyy' ) BEGINDATA // 但是好象不能象右面的那样使用 -10,Sales,Virginia, -10,Sales,Virginia, 1/5/2000 1/5/2000 -40, 40,Finance,Virginia,13/04/2001 Finance,Virginia,13/04/2001 8 ***** 载入每行的行号 load data infile * into table t replace ( seqno RECNUM //载入每行的行号 text Position(1:1024)) BEGINDATA fsdfasj //自动分配一行号给载入 表t 的seqno字段 此行为 1 fasdjfasdfl // 此行为 2 ... 9 ***** 载入有换行符的数据 注意: unix 和 windows 不同 \\n & /n < 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,'\n',chr(10))" // replace 的使用帮助转换换行符 ) BEGINDATA 10,Sales,Virginia,01-april-2001,This is the Sales\nOffice in Virginia 20,Accounting,Virginia,13/04/2001,This is the Accounting\nOffice in Virginia 30,Consulting,Virginia,14/04/2001 12:02:02,This is the Consulting\nOffice in Virginia 40,Finance,Virginia,987268297,This is the Finance\nOffice in Virginia < 2 > 使用fix属性 LOAD DATA INFILE demo17.dat "fix 101" INTO TABLE DEPT REPLACE FIELDS TERMINATED BY ',' TRAILING NULLCOLS (DEPTNO, DNAME "upper(:dname)", LOC "upper(:loc)", LAST_UPDATED "my_to_date( :last_updated )", COMMENTS ) demo17.dat 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 // 这样装载会把换行符装入数据库 下面的方法就不会 但要求数据的格式不同 LOAD DATA INFILE demo18.dat "fix 101" INTO TABLE DEPT REPLACE FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"' TRAILING NULLCOLS (DEPTNO, DNAME "upper(:dname)", LOC "upper(:loc)", LAST_UPDATED "my_to_date( :last_updated )", COMMENTS ) demo18.dat 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" < 3 > 使用var属性 LOAD DATA INFILE demo19.dat "var 3" // 3 告诉每个记录的前3个字节表示记录的长度 如第一个记录的 071 表示此记录有 71 个字节 INTO TABLE DEPT REPLACE FIELDS TERMINATED BY ',' TRAILING NULLCOLS (DEPTNO, DNAME "upper(:dname)", LOC "upper(:loc)", LAST_UPDATED "my_to_date( :last_updated )", COMMENTS ) demo19.dat 07110,Sales,Virginia,01-april-2001,This is the Sales Office in Virginia 07820,Accounting,Virginia,13/04/2001,This is the Accounting Office in Virginia 08730,Consulting,Virginia,14/04/2001 12:02:02,This is the Consulting Office in Virginia 07140,Finance,Virginia,987268297,This is the Finance Office in Virginia < 4 > 使用str属性 // 最灵活的一中 可定义一个新的行结尾符 win 回车换行 : chr(13)||chr(10) 此列中记录是以 a|\r\n 结束的 select utl_raw.cast_to_raw('|'||chr(13)||chr(10)) from dual; 结果 7C0D0A LOAD DATA INFILE demo20.dat "str X'7C0D0A'" INTO TABLE DEPT REPLACE FIELDS TERMINATED BY ',' TRAILING NULLCOLS (DEPTNO, DNAME "upper(:dname)", LOC "upper(:loc)", LAST_UPDATED "my_to_date( :last_updated )", COMMENTS ) demo20.dat 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| ============================================================================== 象这样的数据 用 nullif 子句 10-jan-200002350Flipper seemed unusually hungry today. 10510-jan-200009945Spread over three meals. id position(1:3) nullif // 这里可以是blanks 或者别的表达式 // 下面是另一个列子 第一行的 1 在数据库中将成为 null LOAD DATA INFILE * INTO TABLE T REPLACE (n position(1:2) integer external nullif n='1', v position(3:8) ) BEGINDATA 1 10 20lg相关网站建设哪家好高端网站建设。

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