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  1. MariaDB Server
  2. MDEV-17250

Remove unused Item_copy_xxx

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    Description

      In this class hierarchy:

        Item_copy
      		 
          Item_copy_string
      		 
          Item_copy_int
      		 
            Item_copy_uint
      		 
          Item_copy_float
      		 
          Item_copy_decimal

      Only Item_copy_string is used in the code.

      We'll remove all unused classes.
      We'll also make sure to add tests from the original commit that added those classes:

      commit 73481404656a954b314398f26ee7b4e3aec14282
      		 
      Author: Georgi Kodinov <joro@sun.com>
      		 
      Date:   Mon May 25 11:00:40 2009 +0300
      		 
       
      		 
          Bug #44399 : crash with statement using TEXT columns, aggregates, GROUP BY, and
      		 
          HAVING

      This problem seems to be earlier fixed in a different way in MariaDB, without using Item_copy_(int|uint|float|decimal).

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            bar Alexander Barkov
            bar Alexander Barkov
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