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How to exclude first and last lines while reading data into a sequential file(having some 1000 records).I guess probably by using unix filter option but not sure which to use
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Answer / sam
In sequential file stage, properties tab --- options -- filter
At filter type unix command -- sed '1d;$d'
| Is This Answer Correct ? | 8 Yes | 0 No |
In order to exclude the contents while reading from the
sequential file stage we have to use the filter option.
There we have to specify the unix command:
Sed -e '1d' -e '$d' <filename>
| Is This Answer Correct ? | 8 Yes | 1 No |
In sequential file stage use the filter in the options
In filter use sed '1d;$d'
You can use sed '<start>,<end>d' to delete particular rows and use sed -n '<start>,<end>p' to keep particular rows
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / shiv
Sreenu is also right, but we have another option as well.
Use head and tail stages in datastage like this:
Seq_File-->Tail_stage--->Head_Stage---->Dataset(Target)
in this way first u can exclude the first record using tail specify 999 record in tail stage, then u can exlclude last record by using head stage.(998 top records).
| Is This Answer Correct ? | 1 Yes | 2 No |
Well if must use filter option in sequential stage then
the Ans is:
head -n 10 'FileName' | tail -n 8
explanation:
suppose if ur file has 10 records + column name then total
lines are 11.
col1
1
2
3
4
5
6
7
8
9
10
head -n 10 will fetch column name + 9 records
and
tail -n 8 will fetch 2 to 9 records excluding colname and
1st record.
like :
2
3
4
5
6
7
8
9
Thats it.
| Is This Answer Correct ? | 0 Yes | 2 No |
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