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sqlldr裝載數(shù)據(jù)實現(xiàn)代碼

這里用 excel 數(shù)據(jù)做個最簡單的測試。
1）把 excel 數(shù)據(jù)存為 t.txt 文件，注意文件后綴名為 .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鍵，trailing nullcols 表示如表的字段沒有對應(yīng)的值時允許為空。
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.
達(dá)到提交點，邏輯記錄計數(shù)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' // 要導(dǎo)入的文件
// INFILE 'tt.date' // 導(dǎo)入多個文件
// INFILE * // 要導(dǎo)入的內(nèi)容就在control文件里下面的BEGINDATA后面就是導(dǎo)入的內(nèi)容
INTO TABLE table_name // 指定裝入的表
BADFILE 'c:\bad.txt' // 指定壞文件地址
************* 以下是4種裝入表的方式
APPEND // 原先的表有數(shù)據(jù) 就加在后面
// INSERT // 裝載空表如果原先的表有數(shù)據(jù) sqlloader會停止默認(rèn)值
// REPLACE // 原先的表有數(shù)據(jù) 原先的數(shù)據(jù)會全部刪除
// TRUNCATE // 指定的內(nèi)容和replace的相同會用truncate語句刪除現(xiàn)存數(shù)據(jù)
************* 指定的TERMINATED可以在表的開頭也可在表的內(nèi)部字段部分
FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"'
// 裝載這種數(shù)據(jù): 10,lg,"""lg""","lg,lg"
// 在表中結(jié)果: 10 lg "lg" lg,lg
// TERMINATED BY X '09' // 以十六進(jìn)制格式 '09' 表示的
// TERMINATED BY WRITESPACE // 裝載這種數(shù)據(jù): 10 lg lg
TRAILING NULLCOLS ************* 表的字段沒有對應(yīng)的值時允許為空
************* 下面是表的字段
(
col_1 , col_2 ,col_filler FILLER // FILLER 關(guān)鍵字此列的數(shù)值不會被裝載
// 如: lg,lg,not 結(jié)果 lg lg
)
// 當(dāng)沒聲明FIELDS TERMINATED BY ',' 時
// (
// col_1 [interger external] TERMINATED BY ',' ,
// col_2 [date "dd-mon-yyy"] TERMINATED BY ',' ,
// col_3 [char] TERMINATED BY ',' OPTIONALLY ENCLOSED BY 'lg'
// )
// 當(dāng)沒聲明FIELDS TERMINATED BY ','用位置告訴字段裝載數(shù)據(jù)
// (
// col_1 position(1:2),
// col_2 position(3:10),
// col_3 position(*:16), // 這個字段的開始位置在前一字段的結(jié)束位置
// col_4 position(1:16),
// col_5 position(3:10) char(8) // 指定字段的類型
// )
BEGINDATA // 對應(yīng)開始的 INFILE * 要導(dǎo)入的內(nèi)容就在control文件里
10,Sql,what
20,lg,show
=====================================================================================
//////////// 注意begindata后的數(shù)值前面不能有空格
1 ***** 普通裝載
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 列將為空
60,"Finance",,Virginia // loc 列將為空
2 ***** FIELDS TERMINATED BY WHITESPACE 和 FIELDS TERMINATED BY x'09' 的情況
LOAD DATA
INFILE *
INTO TABLE DEPT
REPLACE
FIELDS TERMINATED BY WHITESPACE
-- FIELDS TERMINATED BY x'09'
(DEPTNO,
DNAME,
LOC
)
BEGINDATA
10 Sales Virginia
3 ***** 指定不裝載那一列
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" 將不會被裝載
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), // 這個字段的開始位置在前一字段的結(jié)束位置
LOC position(*:29),
ENTIRE_LINE position(1:29)
)
BEGINDATA
10Accounting Virginia,USA
5 ***** 使用函數(shù) 日期的一種表達(dá) TRAILING NULLCOLS的使用
LOAD DATA
INFILE *
INTO TABLE DEPT
REPLACE
FIELDS TERMINATED BY ','
TRAILING NULLCOLS // 其實下面的ENTIRE_LINE在BEGINDATA后面的數(shù)據(jù)中是沒有直接對應(yīng)
// 的列的值的如果第一行改為 10,Sales,Virginia,1/5/2000,, 就不用TRAILING NULLCOLS了
(DEPTNO,
DNAME "upper(:dname)", // 使用函數(shù)
LOC "upper(:loc)",
LAST_UPDATED date 'dd/mm/yyyy', // 日期的一種表達(dá)方式還有'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 ***** 使用自定義的函數(shù) // 解決的時間問題
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 )" // 使用自定義的函數(shù)
)
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 ***** 合并多行記錄為一行記錄
LOAD DATA
INFILE *
concatenate 3 // 通過關(guān)鍵字concatenate 把幾行的記錄看成一行記錄
INTO TABLE DEPT
replace
FIELDS TERMINATED BY ','
(DEPTNO,
DNAME "upper(:dname)",
LOC "upper(:loc)",
LAST_UPDATED date 'dd/mm/yyyy'
)
BEGINDATA
10,Sales, // 其實這3行看成一行 10,Sales,Virginia,1/5/2000
Virginia,
1/5/2000
// 這列子用 continueif list="," 也可以
告訴sqlldr在每行的末尾找逗號找到逗號就把下一行附加到上一行
LOAD DATA
INFILE *
continueif this(1:1) = '-' // 找每行的開始是否有連接字符 - 有就把下一行連接為一行
// 如 -10,Sales,Virginia,
// 1/5/2000 就是一行 10,Sales,Virginia,1/5/2000
// 其中1:1 表示從第一行開始并在第一行結(jié)束還有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樣使用
-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 ***** 載入每行的行號
load data
infile *
into table t
replace
( seqno RECNUM //載入每行的行號
text Position(1:1024))
BEGINDATA
fsdfasj //自動分配一行號給載入表t 的seqno字段此行為 1
fasdjfasdfl // 此行為 2 ...
9 ***** 載入有換行符的數(shù)據(jù)
注意: unix 和 windows 不同 \\n /n

1 > 使用一個非換行符的字符
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 的使用幫助轉(zhuǎn)換換行符
)
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屬性
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
// 這樣裝載會把換行符裝入數(shù)據(jù)庫下面的方法就不會但要求數(shù)據(jù)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屬性
LOAD DATA
INFILE demo19.dat "var 3"
// 3 告訴每個記錄的前3個字節(jié)表示記錄的長度如第一個記錄的 071 表示此記錄有 71 個字節(jié)
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屬性
// 最靈活的一中可定義一個新的行結(jié)尾符 win 回車換行 : chr(13)||chr(10)
此列中記錄是以 a|\r\n 結(jié)束的
select utl_raw.cast_to_raw('|'||chr(13)||chr(10)) from dual;
結(jié)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|
==============================================================================
象這樣的數(shù)據(jù) 用 nullif 子句
10-jan-200002350Flipper seemed unusually hungry today.
10510-jan-200009945Spread over three meals.
id position(1:3) nullif // 這里可以是blanks 或者別的表達(dá)式
// 下面是另一個列子第一行的 1 在數(shù)據(jù)庫中將成為 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

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sqlldr裝載數(shù)據(jù)實現(xiàn)代碼

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