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Top Forums Shell Programming and Scripting Filter uniq field values (non-substring) Post 302900780 by alister on Thursday 8th of May 2014 03:40:31 PM
Old 05-08-2014
Quote:
Originally Posted by vgersh99
a bit verbose and most likely not optimal:
Code:
awk '
   {idx=$2 SUBSEP $4}
   {
      for(i in a) {
        split(i,tA,SUBSEP)
        if (index(tA[1],$2) && index(tA[2],$4)) 
           next
        if (index($2, tA[1]) && index($4,tA[2])) 
           delete a[i]
      }
      a[idx]=$0
   }
END {
   for (i in a) print a[i]
}' myFile

can probably generalize this to specify any number of fields AND-ed together.....
That's not correct because it only accounts for cases where one line's field pair matches another line's field pair. The case where a line's fields are substrings of fields of two different lines is unaccounted for.

Regards,
Alister
 

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MySQL::Diff::Table(3pm) 				User Contributed Perl Documentation				   MySQL::Diff::Table(3pm)

NAME
MySQL::Diff::Table - Table Definition Class SYNOPSIS
use MySQL::Diff::Table my $db = MySQL::Diff::Database->new(%options); my $def = $db->def(); my $name = $db->name(); my $field = $db->field(); my $fields = $db->fields(); # %$fields my $primary_key = $db->primary_key(); my $indices = $db->indices(); # %$indices my $options = $db->options(); my $isfield = $db->isa_field($field); my $isprimary = $db->isa_primary($field); my $isindex = $db->isa_index($field); my $isunique = $db->is_unique($field); my $isfulltext = $db->is_fulltext($field); DESCRIPTION
Parses a table definition into component parts. METHODS
Constructor new( %options ) Instantiate the objects, providing the command line options for database access and process requirements. Public Methods Fuller documentation will appear here in time :) o def Returns the table definition as a string. o name Returns the name of the current table. o field Returns the current field definition of the given field. o fields Returns an array reference to a list of fields. o primary_key Returns a hash reference to fields used as primary key fields. o indices Returns a hash reference to fields used as index fields. o options Returns the additional options added to the table definition. o isa_field Returns 1 if given field is used in the current table definition, otherwise returns 0. o isa_primary Returns 1 if given field is defined as a primary key, otherwise returns 0. o isa_index Returns 1 if given field is used as an index field, otherwise returns 0. o is_unique Returns 1 if given field is used as unique index field, otherwise returns 0. o is_fulltext Returns 1 if given field is used as fulltext index field, otherwise returns 0. COPYRIGHT AND LICENSE
Copyright (c) 2000-2011 Adam Spiers. All rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. SEE ALSO
mysqldiff, MySQL::Diff, MySQL::Diff::Database, MySQL::Diff::Utils AUTHOR
Adam Spiers <mysqldiff@adamspiers.org> perl v5.14.2 2012-04-06 MySQL::Diff::Table(3pm)
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