Hi All,
Am working on perl script which should delete columns in existing CSV file.
If my file is :
AA,BB,CC,DD
00,11,22,33
00,55,66,77
00,99,88,21
AA,BB... are all my headers can come in any order (e.g AA,CC,BB...) and rest are values. I want to delete column CC...
Can anybody help... (2 Replies)
Hi,
I want to delete rows that dont have a certain # of columns. In my case, rows that are less than 8 should be removed (those greater than 8 are ok).
For instance:
1 2 3 4 5 6 7 8
2 3 2 4 3 2 1 5
1 2 3 4 5 6 8
2 2 4 3 1
1 1 1 1 1 1 1 1
after:
1... (8 Replies)
Hi All,
I have two .csv's
input.csv having values as (7 columns)
ABC,A19907103,ABC DEV YUNG,2.17,1000,2157,07/07/2006
XYZ,H00213850,MM TRUP HILL,38.38,580,23308,31/08/2010
output.csv having (25 columns)
A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y... (4 Replies)
I have a text file that looks like this:
1 rs523634 8.22486
1
1 rs585160 8.22488
1 rs497228 8.2249
1
1 rs600933 8.225
1 rs480106 8.22531
1 rs600199 8.22533
1 rs529015 8.22534
1 rs598894 8.22534
I want to delete the rows with empty... (2 Replies)
Hi All,
i have a .Csv file in the below format
startTime, endTime, delta, gName, rName, rNumber, m2239max, m2239min, m2239avg, m100016509avg, m100019240max, metric3min, m100019240avg, propValues
11-Mar-2012 00:00:00, 11-Mar-2012 00:05:00, 300.0, vma3550a, a-1_CPU Index<1>, 200237463, 0.0,... (9 Replies)
Hi,
I have a requirement to convert rows into columns. data looks like:
c1,c2,c3,..
r1,r2,r3,..
p1,p2,p3,..
and so on..
output shud be like this:
c1,r1,p1,..
c2,r2,p2,..
c3,r3,p3,..
Thanks in advance, (12 Replies)
Hi all, I know this sounds suspiciously like a homework course; but, it is not.
My goal is to take a file, and match my "ID" column to the "Date" column, if those conditions are true, add the total number of minutes worked and place it in this file, while not printing the original rows that I... (6 Replies)
Hi all, I'm pretty much a newbie to UNIX. I would appreciate any help with UNIX coding on comparing two large csv files (greater than 10 GB in size), and output a file with matching columns.
I want to compare file1 and file2 by 'id' and 'chain' columns, then extract exact matching rows'... (5 Replies)
I have a series of csv files in the following format
eg file1
Experiment Name,XYZ_07/28/15,
Specimen Name,Specimen_001,
Tube Name, Control,
Record Date,7/28/2015 14:50,
$OP,XYZYZ,
GUID,abc,
Population,#Events,%Parent
All Events,10500,
P1,10071,95.9
Early Apoptosis,1113,11.1
Late... (6 Replies)
Discussion started by: pawannoel
6 Replies
LEARN ABOUT DEBIAN
data::stream::bulk::dbi
Data::Stream::Bulk::DBI(3pm) User Contributed Perl Documentation Data::Stream::Bulk::DBI(3pm)NAME
Data::Stream::Bulk::DBI - N-at-a-time iteration of DBI statement results.
VERSION
version 0.11
SYNOPSIS
use Data::Stream::Bulk::DBI;
my $sth = $dbh->prepare("SELECT hate FROM sql"); # very big resultset
$sth->execute;
return Data::Stream::Bulk::DBI->new(
sth => $sth,
max_rows => $n, # how many at a time
slice => [ ... ], # if you want to pass the first param to fetchall_arrayref
);
DESCRIPTION
This implementation of Data::Stream::Bulk api works with DBI statement handles, using "fetchall_arrayref" in DBI.
It fetches "max_rows" at a time (defaults to 500).
ATTRIBUTES
sth The statement handle to call "fetchall_arrayref" on.
slice
Passed verbatim as the first param to "fetchall_arrayref". Should usually be "undef", provided for completetness.
max_rows
The second param to "fetchall_arrayref". Controls the size of each buffer.
Defaults to 500.
METHODS
get_more
See Data::Stream::Bulk::DoneFlag.
Calls "fetchall_arrayref" to get the next chunk of rows.
all Calls "fetchall_arrayref" to get the raminder of the data (without specifying "max_rows").
AUTHOR
Yuval Kogman <nothingmuch@woobling.org>
COPYRIGHT AND LICENSE
This software is copyright (c) 2012 by Yuval Kogman.
This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.
perl v5.14.2 2012-02-14 Data::Stream::Bulk::DBI(3pm)