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Backporting revision from 6.0:

Browse source 
revno: 2617.56.25
committer: Alexander Nozdrin <alik@sun.com>
branch nick: azalea-bugfixing
timestamp: Thu 2009-07-09 20:30:43 +0400
message:
  Add a comment in the source (Bug#40358).
This commit is contained in:
Alexander Nozdrin 2009-10-16 19:21:54 +04:00
parent 2397e6593d
commit ad8d89cd81
1 changed files with 11 additions and 1 deletions
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12
include/my_base.h
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@ -255,7 +255,17 @@ enum ha_base_keytype {
HA_BINARY_PACK_KEY | HA_FULLTEXT | HA_UNIQUE_CHECK | \
HA_SPATIAL | HA_NULL_ARE_EQUAL | HA_GENERATED_KEY)
#define HA_KEY_HAS_PART_KEY_SEG 65536 /* Key contains partial segments */
/*
Key contains partial segments.
This flag is internal to the MySQL server by design. It is not supposed
neither to be saved in FRM-files, nor to be passed to storage engines.
It is intended to pass information into internal static sort_keys(KEY *,
KEY *) function.
This flag can be calculated -- it's based on key lengths comparison.
*/
#define HA_KEY_HAS_PART_KEY_SEG 65536
/* Automatic bits in key-flag */