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Top Forums Shell Programming and Scripting Multiple columns replace with null values. Post 302963352 by onesuri on Tuesday 29th of December 2015 07:52:28 AM
Old 12-29-2015
Multiple columns replace with null values.

I am trying to replace the partcular columns(Col3,col5,col20,col44,col55,co56,col59,col60,col61,col62,col74,col75,col88,col90,col91,col93 ,col94,col95) with empty

Input file

Col1,col2,col3,col4,col5------,col100
1,2,3,4,5,---------,100
3,4,5,6,7,---------,300

Output :
Col1,col2,col3,col4,col5------col100
1,2,,4,,---------100
3,4,,6,,---------300

Tried with sed but not working.
sed command not helping because I am replacing the entire column with null value.

"The scenario simply replace few columns with null values in a file."

Any advices on sed command to replace the entire column as null.
 

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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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