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| author | monty@tik.mysql.fi <> | 2002-01-12 15:42:54 +0200 |
|---|---|---|
| committer | monty@tik.mysql.fi <> | 2002-01-12 15:42:54 +0200 |
| commit | 7dd4eb71fe7576e428fe1ecaaad214d3a39ff4dc (patch) | |
| tree | 5c9b603230485a57877f3b066d095b6668bd1d2e /include | |
| parent | 47408baac6f53cd32ff45c83b09fb56a9084bd5b (diff) | |
| download | mariadb-git-7dd4eb71fe7576e428fe1ecaaad214d3a39ff4dc.tar.gz | |
Added support of null keys in HEAP tables
Added ORDER BY optimization
Diffstat (limited to 'include')
| -rw-r--r-- | include/heap.h | 4 | ||||
| -rw-r--r-- | include/my_base.h | 3 |
2 files changed, 5 insertions, 2 deletions
diff --git a/include/heap.h b/include/heap.h index 9efb873ec93..02b04e2b3ec 100644 --- a/include/heap.h +++ b/include/heap.h @@ -78,11 +78,13 @@ typedef struct st_hp_keyseg /* Key-portion */ uint start; /* Start of key in record (from 0) */ uint length; /* Keylength */ uint type; + uint null_bit; /* bit set in row+null_pos */ + uint null_pos; } HP_KEYSEG; typedef struct st_hp_keydef /* Key definition with open */ { - uint flag; /* NOSAME */ + uint flag; /* HA_NOSAME | HA_NULL_PART_KEY */ uint keysegs; /* Number of key-segment */ uint length; /* Length of key (automatic) */ HP_KEYSEG *seg; diff --git a/include/my_base.h b/include/my_base.h index dc88e248469..6494fa93ab9 100644 --- a/include/my_base.h +++ b/include/my_base.h @@ -68,7 +68,8 @@ enum ha_rkey_function { enum ha_key_alg { HA_KEY_ALG_BTREE=0, /* B-tree, default one */ - HA_KEY_ALG_RTREE=1 /* R-tree, for spatial searches */ + HA_KEY_ALG_RTREE=1, /* R-tree, for spatial searches */ + HA_KEY_ALG_HASH=2 /* HASH keys (HEAP tables) */ }; /* The following is parameter to ha_extra() */ |