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Implementation of the MWL#247: Make the optimizer use extended keys.

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The main patch.
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This commit is contained in:
Igor Babaev
2011-12-31 02:25:57 -08:00
parent 1c47e1ca0d
commit b6b5f9fabe
13 changed files with 10204 additions and 72 deletions
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3
sql/structs.h
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@ -77,6 +77,9 @@ typedef struct st_key {
ulong flags; /* dupp key and pack flags */
uint key_parts; /* How many key_parts */
uint usable_key_parts; /* Should normally be = key_parts */
uint ext_key_parts; /* Number of key parts in extended key */
ulong ext_key_flags; /* Flags for extended key */
key_part_map ext_key_part_map; /* Bitmap of pk key parts in extension */
uint block_size;
uint name_length;
enum ha_key_alg algorithm;