SQL Loader - adding column values

Hi everybody,
Is it possible to have a column value in SQL Loader control file that is a function of two other columns. For example I have table of 3 columns c1, c2, c3
and data file is having c1, c2 and I want to specify c3 as c1+c2 in the control file, so that it's populated in the table while loading data file. I tried this on date column but it gave me error ora-00981.
Can you tell me exact sysntax if possible.

LOAD DATA
INFILE 'C:\SQLLOADER\AREA.TXT'
APPEND INTO TABLE AREA
FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"'
(c1,
c2,
c3 ":c2+:c1"
kuljeet pal singh

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    *aaaaaaaaaaa
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    *ddddddddddd
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    : LDR-510은 data file 안의 physical record가 최대값인 64K 를
    넘은 경우이다.
    SQL*Loader 에서는 physical record 가 연속적이어야 하며, 이는
    최대인 64k 를 넘지 못하는 제한이 있기 때문이다.
    (여러 buffers 를 통해 load 불가능)
    이는 위의 1번과 같으므로 physical record 를 여러 logical record 로
    나누어야 한다.
    6) EBCDIC Characterset data file 은 어떻게 load 하나 ?
    : control file 에 characterset 을 명시한다.
    많이 사용되는 EBCDIC character set 은 WE8EBCDIC500 이다.
    예제)
    load data
    characterset we8ebcdic500
    infile *
    replace
    into table for_load
    (x)
    begindata
    B
    Z
    X
    SQL> select * from for_load;
    X
    a
    i
    이는 ASCII 의 경우도 같다.
    7) control file 에 WE8EBCDIC500 characterset 을 사용하였는데도
    SQL*Loader-266 가 발생하는 경우
    환경변수인 ORA_NLS 가 맞게 설정되었는지를 check 한다.
    (PRE: 1012552.6 PRS: 2060644.6)
    8) decimal data 는 어떻게 load 하는가?
    : data 를 조작하는 방법밖에 없다.즉 decimal point 가 들어가게
    data 를 조작한다.
    예제)
    load data
    infile *
    truncate
    into table test
    (col1 integer external(5) ":col1/100")
    begindata
    12345
    10000
    24983
    SQL> select * from test;
    COL1
    123.45
    100
    249.83
    9) trailing signs 이 있는 숫자는 어떻게 load 하는가?
    예제)
    load data
    infile *
    truncate
    into table loadnums
    (col1 position(1:5),
    col2 position(7:16) "to_number(:col2,'99,999.99MI')")
    begindata
    abcde 1,234.99-
    abcde 11,234.34+
    abcde 45.23
    abcde 99,234.38-
    abcde 23,234.23+
    abcde 98,234.23+
    SQL> select * from loadnums;
    COL1 COL2
    abcde -1234.99
    abcde 11234.34
    abcde -99234.38
    abcde 23234.23
    abcde 98234.23
    <주의> 이경우 log file 에 다음의 error message 를 볼수있다.
    Record 3: Rejected - Error on table LOADNUMS, column COL2.
    ORA-01722: invalid number
    이 error message 는 당연한 것이다.
    왜냐면 control file 에 number datatype 에 mask 를 주었기 때문에
    모든 number 는 mask 를 가져야 한다.
    이때 Record 3은 trailing sign 이 없기 때문에 reject 된 것이다.
    10) zoned number는 무엇인가?
    이는 decimal digit 의 string 으로 1byte 에 1 string 이 해당된며,
    부호가 맨 마지막byte 에 포함되는 경우이다.
    예제)
    LOAD DATA
    infile *
    append
    INTO TABLE test
    (col1 position(1:3) zoned(3),
    col2 position(4:6),
    col3 position(7:8))
    begindata
    12J43323
    43023423
    SQL> select * from test;
    COL1 COL2 COL3
    -121 433 23
    430 234 23
    2 rows selected.
    다음은 zoned values의 map 이다:
    {ABCDEFGHI}JKLMNOPQR0123456789
    ++++++++++----------++++++++++
    {ABCDEFGHI}JKLMNOPQR
    01234567890123456789
    11) Packed Decimal Number는 무엇인가 ?
    : packed decimal format은 bytes 로 이루어진 1 string 의 모음인데
    각각은 2 digit (2 nibbles) 을 가진다.
    이중 마지막 byte 는 1 digit 와 sign 으로 이루어진다.
    이 sign 은 보통 0x0a, 0x0b, ..., 0x0f: usually 0x0c/a/e/f for +ve,
    0x0d/b for -ve 로 이루어져 있다.
    예를 들어 +123 의 packed decimal 표현은 다음과 같다.
    [12] [3C] 이고 이때 [12] 는 nibbles 0x01 and 0x02를 포함하는
    byte 이다. [3C]의 경우도 같다.
    The kernel 은 sing nibble 의 여부를 ttcp2n() 을 통해 check한다.
    만일 0x0a, ..., 0x0f 중의 하나가 아니면 ORA-1488 error 를 발생시킨다.
    <주의> BUG:296890:
    이는 bug 는 아니며, SQL*Loader 는 COBOL 에서 발생시키는 UNSIGNED
    packed decimal 을 support 하지 않는다.
    즉 SQL*Loader 는 packed decimal을 load 시 마지막 byte 가 반드시
    1 digit와 ,sign 이 포함되어지는지 check 한다.
    12) NULLIF 는 어떻게 사용하나 ?
    예제)
    load data
    infile *
    truncate
    into table test
    fields terminated by ','
    (col1 date "mm/dd/yy" nullif col1='0', col2)
    begindata
    0,12345
    11/11/95,12345
    0,12345
    11/11/95,12345
    SQL> select * from test;
    COL1 COL2
    12345
    11-NOV-95 12345
    12345
    11-NOV-95 12345
    13) 한개의 single column을 위해 여러 개의 nullif 는 사용가능한가 ?
    : 불가능하다. 그러나 workaround 로는
    예제)
    load data
    infile *
    truncate
    into table test
    fields terminated by ',' optionally enclosed by '"'
    (col1,col2 "decode(:col2,'X',NULL,'Y',NULL,'Z',NULL,:col2)",col3)
    begindata
    12345,"X",12345
    12345,"A",12345
    12345,"Y",12345
    12345,"Z",12345
    12345,"B",12345
    SQLDBA> select * from test;
    COL1 COL2 COL3
    12345 12345
    12345 A 12345
    12345 12345
    12345 12345
    12345 B 12345
    5 rows selected.
    14) SQL*Loader 가 NULL 로 여기는 column 을 blank space 로 여기도록
    만들려면 ?
    : PRESERVE BLANKS를 사용하지 않으면 loader 는 blank 들을 null 로
    인식한다.
    이 경우 workaround 로는
    예제)
    load data
    infile *
    into table test
    fields terminated by ','
    (col1 position(1:5) integer external,
    col2 position(15:20) char "nvl(:col2,' ')",
    col3 position(25:30) integer external)
    begindata
    12345 rec1 12345
    12345 23453
    23333 rec3 29874
    98273 98783
    98723 rec5 234
    SQL> select * from test yields;
    COL1 COL2 COL3
    12345 rec1 12345
    12345 23453
    23333 rec3 29874
    98273 98783
    98723 rec4 234
    5 rows selected.
    15) WHEN 절은 어떻게 사용한가 ?
    예제)
    load data
    infile *
    truncate
    into table t1
    when col1 = '12345'
    (col1 position(1:5) integer external, col2 position(7:12) char)
    into table t2
    when col1 = '54321'
    (col1 position(1:5) integer external, col2 position(7:12) char)
    begindata
    12345 table1
    54321 table2
    99999 no tab
    12345 table2
    54321 table2
    SQL> select * from t1;
    COL1 COL2
    12345 table1
    12345 table2
    SQL> select * from t2;
    COL1 COL2
    54321 table2
    54321 table2
    16) WHEN 절에 OR 를 사용할수 있는가 ?
    : 불가능하다 그러나 workaround 로는
    예제) 만일 where (col1=12345 OR col1=54321) AND col2='rowena'경우에
    data 를 insert 하고자 하면
    load data
    infile *
    truncate
    into table test
    when col1 = '12345' and col2='rowena'
    (col1 position(1:5) integer external, col2 position(7:12) char)
    into table test
    when col1 = '54321' and col2='rowena'
    (col1 position(1:5) integer external, col2 position(7:12) char)
    begindata
    12345 rowena
    43234 rowena
    54321 rowena
    (즉, OR를 갖지 못하나, 같은 table 에 두개의 when 은 가질수있다.)
    SQLDBA> select * from test;
    COL1 COL2
    12345 rowena
    54321 rowena
    2 rows selected.
    17) delimiter 로 ','를 사용하였는데 data 에 ','가 포함된 경우는 ?
    : 두 번 지정한다.
    예제)
    load 할 data 가 col1, rowena, rowena, col3 이고
    datafile 이 다음과 같은 경우
    col1, rowena,, rowena, col3
    select * from table:
    COL1 COL2 COL3
    col1 rowena, rowena col3
    18) 어떻게 하면 commit 을 덜 사용할 수 있나 ?
    : rows 나 bindsize를 사용한다.
    그러나 bindsize 가 적은 경우 bindsize는 rows 를 많이 적재할 수
    있으므로 항상 1 bindsize 에 몇 개의 rows 가 set 되었는지에 관계
    없이 bindsize에 commit 이 수행된다.
    Reference Document
    ------------------

    hi,
    pls take a look at this document
    http://www.petefinnigan.com/weblog/archives/00000020.htm
    regards,

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