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CSC#4385: slow sorting for UTF8 large table:

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my_strnxfrm_utf8 now requires 2 bytes per character
in filesort key, instead of 3 bytes per character.
Shorter filesort keys make sorting faster.
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unknown
2005-01-26 16:34:09 +04:00
parent e8ae338356
commit 9bb464487d
20 changed files with 58 additions and 16 deletions
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2
strings/ctype-bin.c
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@ -447,6 +447,7 @@ MY_COLLATION_HANDLER my_collation_8bit_bin_handler =
my_strnncoll_8bit_bin,
my_strnncollsp_8bit_bin,
my_strnxfrm_8bit_bin,
my_strnxfrmlen_simple,
my_like_range_simple,
my_wildcmp_bin,
my_strcasecmp_bin,
@ -461,6 +462,7 @@ static MY_COLLATION_HANDLER my_collation_binary_handler =
my_strnncoll_binary,
my_strnncollsp_binary,
my_strnxfrm_bin,
my_strnxfrmlen_simple,
my_like_range_simple,
my_wildcmp_bin,
my_strcasecmp_bin,