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| author | Alexander Nozdrin <alik@sun.com> | 2009-11-05 15:08:37 +0300 |
|---|---|---|
| committer | Alexander Nozdrin <alik@sun.com> | 2009-11-05 15:08:37 +0300 |
| commit | d476bbb0becb27d7d3cb1fc5cc0ac4d401622893 (patch) | |
| tree | 64caab6e7d4a7167ee56b4f7d6572bb07c30750a /include/my_base.h | |
| parent | 1a8f08b006616b0bb2a9e9e13969ebe406e9e3f2 (diff) | |
| parent | 16b603a8b0c2bba16cb66b1769f21c0185435d33 (diff) | |
| download | mariadb-git-d476bbb0becb27d7d3cb1fc5cc0ac4d401622893.tar.gz | |
Auto-merge from mysql-next-mr.
Diffstat (limited to 'include/my_base.h')
| -rw-r--r-- | include/my_base.h | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/include/my_base.h b/include/my_base.h index a01b2ec9b82..70bd9b5e073 100644 --- a/include/my_base.h +++ b/include/my_base.h @@ -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 */ |