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Top Forums Shell Programming and Scripting compare 2 files based on columns Post 302489351 by novice_man on Thursday 20th of January 2011 09:10:52 AM
Old 01-20-2011
compare 2 files based on columns

Hi Experts,

Is there a way to compare 2 files by columns and print matching cases.
I have 2 files as below, I want cases where col1 and col2 in f1 matches col1 and col2 in f2 to be printed as output. The separator is space. I want the output to have col1 col2 col 3 from both files printed in same line. Please see below example.

Code:
> cat f1
a b 1
c d 3
e f 0
f b 4
h h 0
x y 5

> cat f2
Code:
f d 1
h h 0 
f b 4
e f 2
c d 3
a b 1
y x 5

Code:
> Desired output
a b 1 a b 1
c d 3 c d 3
e f 0 e f 2
h h 0 h h 0
f b 4 f b 4


Thanks.

Best Regards,
Mani BR.
 

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DBIx::Class::Schema::Loader::RelBuilder(3pm)		User Contributed Perl Documentation	      DBIx::Class::Schema::Loader::RelBuilder(3pm)

NAME
DBIx::Class::Schema::Loader::RelBuilder - Builds relationships for DBIx::Class::Schema::Loader SYNOPSIS
See DBIx::Class::Schema::Loader and DBIx::Class::Schema::Loader::Base. DESCRIPTION
This class builds relationships for DBIx::Class::Schema::Loader. This is module is not (yet) for external use. METHODS
new Arguments: $loader object generate_code Arguments: [ [ local_moniker1 (scalar), fk_info1 (arrayref), uniq_info1 (arrayref) ] [ local_moniker2 (scalar), fk_info2 (arrayref), uniq_info2 (arrayref) ] ... ] This generates the code for the relationships of each table. "local_moniker" is the moniker name of the table which had the REFERENCES statements. The fk_info arrayref's contents should take the form: [ { local_table => 'some_table', local_moniker => 'SomeTable', local_columns => [ 'col2', 'col3' ], remote_table => 'another_table_moniker', remote_moniker => 'AnotherTableMoniker', remote_columns => [ 'col5', 'col7' ], }, { local_table => 'some_other_table', local_moniker => 'SomeOtherTable', local_columns => [ 'col1', 'col4' ], remote_table => 'yet_another_table_moniker', remote_moniker => 'YetAnotherTableMoniker', remote_columns => [ 'col1', 'col2' ], }, # ... ], The uniq_info arrayref's contents should take the form: [ [ uniq_constraint_name => [ 'col1', 'col2' ], ], [ another_uniq_constraint_name => [ 'col1', 'col2' ], ], ], This method will return the generated relationships as a hashref keyed on the class names. The values are arrayrefs of hashes containing method name and arguments, like so: { 'Some::Source::Class' => [ { method => 'belongs_to', arguments => [ 'col1', 'Another::Source::Class' ], { method => 'has_many', arguments => [ 'anothers', 'Yet::Another::Source::Class', 'col15' ], ], 'Another::Source::Class' => [ # ... ], # ... } AUTHOR
See "AUTHOR" in DBIx::Class::Schema::Loader and "CONTRIBUTORS" in DBIx::Class::Schema::Loader. LICENSE
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.14.2 2012-06-08 DBIx::Class::Schema::Loader::RelBuilder(3pm)
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