how to change the beginning position of the field in sql loader - oracle

Question

I have a file which i want to load using sql loader.the sample file is as follows.
1|Deepak|1|raj|Kumar|mcapatna|powerhouse
the control file is
LOAD DATA
INFILE *
TRUNCATE
INTO TABLE Student WHEN (1:1)= '1'
FIELDS TERMINATED BY '|'
TRAILING NULLCOLS
(
nickName1 position(6) NULLIF nickName1=BLANKS ,
nickName2 NULLIF nickName2=BLANKS ,
class CONSTANT '10',
Address CONSTANT 'NA'
)
The output what i want is nickName1=mcapatna nickName=powerhouse class=10 & Address=NA.
I am getting the value for nickName1=pak & for nickName2= 1
That means it is counting based on sequence of single characters..

Answer 1

The control file is in data file field order. To skip the fields in the data file you do not want, you need to "consume" them by defining them as FILLER.
...
(
skip_1 FILLER,
skip_2 FILLER,
skip_3 FILLER,
skip_4 FILLER,
skip_5 FILLER,
nickname1,
nickname2,
class CONSTANT '10',
Address CONSTANT 'NA'
)
See this fairly recent post for more info: Skipping data fields while loading delimited data using SQLLDR

Answer 2

By adding position(6) in your ctl file, it starts at position 6 till the next |. So pak is the expected value. If you remove position(6), it will start on position 1 automaticly.
I guess something like this, would do the job (this is not tested but gives you a direction):
LOAD DATA
INFILE *
INTO TABLE Student
FIELDS OPTIONALLY ENCLOSED BY '"' TRAILING NULLCOLS
( nickName1 CHAR NULLIF nickName1=BLANKS TERMINATED BY "|"
, nickName2 CHAR NULLIF nickName2=BLANKS TERMINATED BY "|"
, class CHAR CONSTANT '10' TERMINATED BY "|",
, Address CONSTANT 'NA' TERMINATED BY "|"
)