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const unsigned char *key;
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enum ha_rkey_function flag;
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key_part_map keypart_map;
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char *ptr; /* Free to use by caller (ptr to row etc) */
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uint32_t range_flag; /* key range flags see above */
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/* For number of records */
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typedef uint64_t ha_rows;
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#define HA_POS_ERROR (~ (::drizzled::ha_rows) 0)
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#define HA_OFFSET_ERROR (~ (::drizzled::internal::my_off_t) 0)