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Full Discussion: awk script to perform an action similar to vlookup between two csv files in UNIX
Top Forums Shell Programming and Scripting awk script to perform an action similar to vlookup between two csv files in UNIX Post 302915508 by Prit Siv on Wednesday 3rd of September 2014 01:09:35 PM
Old 09-03-2014
awk script to perform an action similar to vlookup between two csv files in UNIX
Hi,

I am new to awk/unix and am trying to put together an awk script to perform an action similar to vlookup between the two csv files.

Here are the contents of the two files:

File 1:

Code:
Date,ParentID,Number,Area,Volume,Dimensions
2014-01-01,ABC,247,83430.33,857.84,8110.76
2014-01-01,DEF,295,2904.60,139.33,102.95
2014-01-01,ABC,146,11392.70,5017.07,800.96
2014-01-01,XYZ,465,589.76,2.55,1145.33

File 2:

Code:
ID,DATE__C,Parent__ID
PPPG000000tXZWXIA4,2014-01-01,DEF
TTTG000000tXZWYIA4,2014-01-01,ABC
UUUG000000tXZWbIAO,2014-01-01,XYZ

I am trying to do a lookup between the two files based on the date and the parent ID. If the date AND The parent ID are the same, the "ID" (first column from in file 2) needs to be copied to file 1 (as the first column). If they are not the same, then a blank should be copied to file 1.

For example, the output would be as follows:

File 1:

Code:
ID,Date,ParentID,Number,Area,Volume,Dimensions
TTTG000000tXZWYIA4,2014-01-01,ABC,247,83430.33,857.84,8110.76
PPPG000000tXZWXIA4,2014-01-01,DEF,295,2904.60,139.33,102.95
,2014-02-01,ABC,146,11392.70,5017.07,800.96
UUUG000000tXZWbIAO,2014-01-01,XYZ,465,589.76,2.55,1145.33

Can someone please assist?

Really appreciate any help!

Thank you,
 

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LEARN ABOUT MOJAVE

locale::codes::language

Locale::Codes::Language(3pm)				 Perl Programmers Reference Guide			      Locale::Codes::Language(3pm)

NAME

       Locale::Codes::Language - standard codes for language identification

SYNOPSIS

	  use Locale::Codes::Language;

	  $lang = code2language('en');	      # $lang gets 'English'
	  $code = language2code('French');    # $code gets 'fr'

	  @codes   = all_language_codes();
	  @names   = all_language_names();

DESCRIPTION

       The "Locale::Codes::Language" module provides access to standard codes used for identifying languages, such as those as defined in ISO 639.

       Most of the routines take an optional additional argument which specifies the code set to use. If not specified, the default ISO 639 two-
       letter codes will be used.

SUPPORTED CODE SETS

       There are several different code sets you can use for identifying languages. A code set may be specified using either a name, or a constant
       that is automatically exported by this module.

       For example, the two are equivalent:

	  $lang = code2language('en','alpha-2');
	  $lang = code2language('en',LOCALE_CODE_ALPHA_2);

       The codesets currently supported are:

       alpha-2, LOCALE_LANG_ALPHA_2
	   This is the set of two-letter (lowercase) codes from ISO 639-1, such as 'he' for Hebrew.  It also includes additions to this set
	   included in the IANA language registry.

	   This is the default code set.

       alpha-3, LOCALE_LANG_ALPHA_3
	   This is the set of three-letter (lowercase) bibliographic codes from ISO 639-2 and 639-5, such as 'heb' for Hebrew.	It also includes
	   additions to this set included in the IANA language registry.

       term, LOCALE_LANG_TERM
	   This is the set of three-letter (lowercase) terminologic codes from ISO 639.

ROUTINES

       code2language ( CODE [,CODESET] )
       language2code ( NAME [,CODESET] )
       language_code2code ( CODE ,CODESET ,CODESET2 )
       all_language_codes ( [CODESET] )
       all_language_names ( [CODESET] )
       Locale::Codes::Language::rename_language  ( CODE ,NEW_NAME [,CODESET] )
       Locale::Codes::Language::add_language  ( CODE ,NAME [,CODESET] )
       Locale::Codes::Language::delete_language  ( CODE [,CODESET] )
       Locale::Codes::Language::add_language_alias  ( NAME ,NEW_NAME )
       Locale::Codes::Language::delete_language_alias  ( NAME )
       Locale::Codes::Language::rename_language_code  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::Language::add_language_code_alias  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::Language::delete_language_code_alias  ( CODE [,CODESET] )
	   These routines are all documented in the Locale::Codes::API man page.

SEE ALSO

       Locale::Codes
	   The Locale-Codes distribution.

       Locale::Codes::API
	   The list of functions supported by this module.

       http://www.loc.gov/standards/iso639-2/
	   Source of the ISO 639-2 codes.

       http://www.loc.gov/standards/iso639-5/
	   Source of the ISO 639-5 codes.

       http://www.iana.org/assignments/language-subtag-registry
	   The IANA language subtag registry.

AUTHOR

       See Locale::Codes for full author history.

       Currently maintained by Sullivan Beck (sbeck@cpan.org).

COPYRIGHT

	  Copyright (c) 1997-2001 Canon Research Centre Europe (CRE).
	  Copyright (c) 2001-2010 Neil Bowers
	  Copyright (c) 2010-2013 Sullivan Beck

       This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.18.2							    2014-01-06					      Locale::Codes::Language(3pm)
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