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Full Discussion: Remove Duplicates on multiple Key Columns and get the Latest Record from Date/Time Column
Top Forums Shell Programming and Scripting Remove Duplicates on multiple Key Columns and get the Latest Record from Date/Time Column Post 302799151 by Don Cragun on Thursday 25th of April 2013 07:55:09 PM
Old 04-25-2013
Can we assume that CDC_FLAG will always be the 3rd field, SRC_PMTN_I will always be the 5th field, and CDC_PRCS_TS will always be the 1st field; or do we have to match the strings against the header line to determine which fields to use?

Do the output records need to be in the same order as they appeared in the input file or can the output be in random order except that the 1st output line must be the 1st input line (the headings)?
 

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LEARN ABOUT CENTOS

__gnu_pbds::list_update

__gnu_pbds::list_update< Key, Mapped, Eq_Fn, Update_Policy, _Library(Functi__gnu_pbds::list_update< Key, Mapped, Eq_Fn, Update_Policy, _Alloc >(3)

NAME

       __gnu_pbds::list_update< Key, Mapped, Eq_Fn, Update_Policy, _Alloc > -

SYNOPSIS

       Inherits type< Key, Mapped, _Alloc, list_update_tag, __gnu_cxx::typelist::create2< Eq_Fn, Update_Policy >::type >.

   Public Types
       typedef list_update_tag container_category
       typedef Eq_Fn eq_fn
       typedef Update_Policy update_policy

   Public Member Functions
       template<typename It > list_update (It first, It last)
       list_update (const list_update &other)
       list_update & operator= (const list_update &other)
       void swap (list_update &other)

Detailed Description
   template<typename Key, typename Mapped, class Eq_Fn = typename detail::default_eq_fn<Key>::type, class Update_Policy =
       detail::default_update_policy::type, class _Alloc = std::allocator<char>>class __gnu_pbds::list_update< Key, Mapped, Eq_Fn, Update_Policy,
       _Alloc >
       A list-update based associative container.

       Template Parameters:
	   Key Key type.
	   Mapped Map type.
	   Eq_Fn Equal functor.
	   Update_Policy Update policy, determines when an element will be moved to the front of the list.
	   _Alloc Allocator type.

       Base is detail::lu_map.

       Definition at line 815 of file assoc_container.hpp.

Constructor &; Destructor Documentation
   template<typename Key , typename Mapped , class Eq_Fn  = typename detail::default_eq_fn<Key>::type, class Update_Policy  =
       detail::default_update_policy::type, class _Alloc  = std::allocator<char>> template<typename It > __gnu_pbds::list_update< Key, Mapped,
       Eq_Fn, Update_Policy, _Alloc >::list_update (Itfirst, Itlast) [inline]
       Constructor taking __iterators to a range of value_types. The value_types between first_it and last_it will be inserted into the container
       object.

       Definition at line 831 of file assoc_container.hpp.

Author
       Generated automatically by Doxygen for libstdc++ from the source code.

libstdc++							  Tue Jun 1__gnu_pbds::list_update< Key, Mapped, Eq_Fn, Update_Policy, _Alloc >(3)
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