10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Join and merge multiple files with duplicate key and fill void columns
Hi guys,
I have many files that I want to merge:
file1.csv:
1|abc
1|def
2|ghi
2|jkl
3|mno
3|pqr
file2.csv: (5 Replies)
Discussion started by: yjacknewton
5 Replies
2. Shell Programming and Scripting
Hi,
I am trying to join 2 csv files, to create a 3rd output file with the joined data.
Below is an example of my Input Data:
Input File 1
NAME, FAV_FOOD, FAV_DRINK, ID, GENDER
Bob, Fish, Coke, 1, M
Lisa, Rice, Water, 2, F
Jenny, Noodle, Tea, 3, F
Ken, Pizza, Coffee, 4, M
Lisa,... (7 Replies)
Discussion started by: RichZR
7 Replies
3. Shell Programming and Scripting
Hi,
I have a file pk.txt which has pk data in following format
TableName | PK
Employee | id
Contact|name,country
My Output should be
Employee | t1.id=s.id
Contact| t1.name=s.name AND t1.country=s.country
I started of like this:
for LIST in `cat pk.txt` do... (5 Replies)
Discussion started by: wahi80
5 Replies
4. UNIX for Dummies Questions & Answers
I have file input1.txt
11103|11|OTTAWA|City|AA|CAR|0|0|1|-1|0|8526|2014-09-07 23:00:14
11103|11|OTTAWA|City|BB|TRAIN|0|0|2|-2|6|6359|2014-09-07 23:00:14
11104|11|CANADA|City|CC|CAR|0|0|2|-2|0|5947|2014-09-07 23:00:14
11104|11|CANADA|City|DD|TRAIN|0|0|2|-2|1|4523|2014-09-07 23:00:14... (5 Replies)
Discussion started by: radius
5 Replies
5. Shell Programming and Scripting
I have two text files as shown below
cat file1.txt
Id leng sal mon
25671 34343 56565 5565
44888 56565 45554 6868
23343 23423 26226 6224
77765 88688 87464 6848
66776 23343 63463 4534
cat file2.txt
Id number
25671 34343
76767 34234
23343 23423
66776 23343 (4 Replies)
Discussion started by: halfafringe
4 Replies
6. Shell Programming and Scripting
Hi All,
I am trying to join to files based on one common column.
Cat File1
ID HID
Ab_1 23
Cd 45
df 22
Vv 33
Cat File2
ID pval
Ab_1 0.3
Cd 10
Vv 0.0444 (3 Replies)
Discussion started by: newpro
3 Replies
7. Shell Programming and Scripting
So I have 2 files:
File 1:
111,Mike,Stipe
222,Peter,Buck
333,Mike,Mills
File 2:
222,Mr,Bono
444,Mr,Edge
I want output to be below, where 222 records joined and all none joined records still in output
111,Mike,Stipe
222,Peter,Buck,Mr,Bono
333,Mike,Mills
444,Mr,Edge (4 Replies)
Discussion started by: stack
4 Replies
8. Shell Programming and Scripting
Hi All,
I have working (Perl) code to combine 2 input files into a single output file using the join function that works to a point, but has the following limitations:
1. I am restrained to 2 input files only.
2. Only the "matched" fields are written out to the "matched" output file and... (1 Reply)
Discussion started by: Katabatic
1 Replies
9. UNIX for Advanced & Expert Users
hi, i have
file 1:
======
0501000|X1
0502000|X2
0501231|X3
0981222|X4
0502000|X6
0503000|X7
0932322|X8
file 2:
=======
050
0501
0502
09
098 (1 Reply)
Discussion started by: magedfawzy
1 Replies
10. Shell Programming and Scripting
I'm new of UNIX shell scripting. I'm recently generating a excel report in UNIX(file with delimiter is fine). How should I make a script to do it?
1 file to join comes from output of one UNIX command, the second from another UNIX command, and third from a database query. The key columes of all... (7 Replies)
Discussion started by: bigsmile
7 Replies
CSV(3pm) User Contributed Perl Documentation CSV(3pm)
NAME
Class::CSV - Class based CSV parser/writer
SYNOPSIS
use Class::CSV;
my $csv = Class::CSV->parse(
filename => 'test.csv',
fields => [qw/item qty sub_total/]
);
foreach my $line (@{$csv->lines()}) {
$line->sub_total('$'. sprintf("%0.2f", $line->sub_total()));
print 'Item: '. $line->item(). "
".
'Qty: '. $line->qty(). "
".
'SubTotal: '. $line->sub_total(). "
";
}
my $cvs_as_string = $csv->string();
$csv->print();
my $csv = Class::CSV->new(
fields => [qw/userid username/],
line_separator => "
";
);
$csv->add_line([2063, 'testuser']);
$csv->add_line({
userid => 2064,
username => 'testuser2'
});
DESCRIPTION
This module can be used to create objects from CSV files, or to create CSV files from objects. Text::CSV_XS is used for parsing and
creating CSV file lines, so any limitations in Text::CSV_XS will of course be inherant in this module.
EXPORT
None by default.
METHOD
CONSTRUCTOR
parse
the parse constructor takes a hash as its paramater, the various options that can be in this hash are detailed below.
Required Options
o fields - an array ref containing the list of field names to use for each row. there are some reserved words that cannot be
used as field names, there is no checking done for this at the moment but it is something to be aware of. the reserved field
names are as follows: "string", "set", "get". also field names cannot contain whitespace or any characters that would not be
allowed in a method name.
Source Options (only one of these is needed)
o filename - the path of the CSV file to be opened and parsed.
o filehandle - the file handle of the CSV file to be parsed.
o objects - an array ref of objects (e.g. Class::DBI objects). for this to work properly the field names provided in fields needs
to correspond to the field names of the objects in the array ref.
o classdbi_objects - depreciated use objects instead - using classdbi_objects will still work but its advisable to update your
code.
Optional Options
o line_separator - the line seperator to be included at the end of every line. defaulting to "
" (unix carriage return).
new the new constructor takes a hash as its paramater, the same options detailed in parse apply to new however no Source Options can be
used. this constructor creates a blank CSV object of which lines can be added via add_line.
ACCESSING
lines
returns an array ref containing objects of each CSV line (made via Class::Accessor). the field names given upon construction are
available as accessors and can be set or get. for more information please see the notes below or the perldoc for Class::Accessor. the
lines accessor is also able to be updated/retrieved in the same way as individual lines fields (examples below).
Example
retrieving the lines:
my @lines = @{$csv->lines()};
removing the first line:
pop @lines;
$csv->lines(@lines);
sorting the lines:
@lines = sort { $a->userid() <=> $b->userid() } @lines:
$csv->lines(@lines);
sorting the lines (all-in-one way):
$csv->lines([ sort { $a->userid() <=> $b->userid() } @{$csv->lines()} ]);
Retrieving a fields value
there is two ways to retrieve a fields value (as documented in Class::Accessor). firstly you can call the field name on the object
and secondly you can call "get" on the object with the field name as the argument (multiple field names can be specified to
retrieve an array of values). examples are below.
my $value = $line->test();
OR
my $value = $line->get('test');
OR
my @values = $line->get(qw/test test2 test3/);
Setting a fields value
setting a fields value is simmilar to getting a fields value. there are two ways to set a fields value (as documented in
Class::Accessor). firstly you can simply call the field name on the object with the value as the argument or secondly you can call
"set" on the object with a hash of fields and their values to set (this isn't standard in Class::Accessor, i have overloaded the
"set" method to allow this). examples are below.
$line->test('123');
OR
$line->set( test => '123' );
OR
$line->set(
test => '123',
test2 => '456'
);
Retrieving a line as a string
to retrieve a line as a string simply call "string" on the object.
my $string = $line->string();
new_line
returns a new line object, this can be useful for to "splice" a line into lines (see example below). you can pass the values of the
line as an ARRAY ref or a HASH ref.
Example
my $line = $csv->new_line({ userid => 123, domainname => 'splicey.com' });
my @lines = $csv->lines();
splice(@lines, 1, 0, $line);
OR
splice(@{$csv->lines()}, 1, 0, $csv->new_line({ userid => 123, domainname => 'splicey.com' }));
add_line
adds a line to the lines stack. this is mainly useful when the new constructor is used but can of course be used with any constructor.
it will add a new line to the end of the lines stack. you can pass the values of the line as an ARRAY ref or a HASH ref. examples of
how to use this are below.
Example
$csv->add_line(['house', 100000, 4]);
$csv->add_line({
item => 'house',
cost => 100000,
bedrooms => 4
});
OUTPUT
string
returns the object as a string (CSV file format).
print
calls "print" on string (prints the CSV to STDOUT).
SEE ALSO
Text::CSV_XS, Class::Accessor
AUTHOR
David Radunz, <david@boxen.net>
COPYRIGHT AND LICENSE
Copyright 2004 by David Radunz
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
perl v5.10.0 2007-02-08 CSV(3pm)