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{ return new (mem_root) Key(*this, mem_root); }
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int find_ref_key(KEY *key, uint32_t key_count, unsigned char *record, Field *field,
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uint32_t *key_length, uint32_t *keypart);
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Copy part of a record that forms a key or key prefix to a buffer.
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The function takes a complete table record (as e.g. retrieved by
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handler::index_read()), and a description of an index on the same table,
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and extracts the first key_length bytes of the record which are part of a
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key into to_key. If length == 0 then copy all bytes from the record that
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@param to_key buffer that will be used as a key
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@param from_record full record to be copied from
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@param key_info descriptor of the index
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@param key_length specifies length of all keyparts that will be copied
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void key_copy(unsigned char *to_key, unsigned char *from_record, KEY *key_info, uint32_t key_length);
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void key_copy(std::basic_string<unsigned char> &to_key,
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unsigned char *from_record, KEY *key_info, uint32_t key_length);
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void key_restore(unsigned char *to_record, unsigned char *from_key, KEY *key_info,
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void key_zero_nulls(unsigned char *tuple, KEY *key_info);
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bool key_cmp_if_same(Table *form,const unsigned char *key,uint32_t index,uint32_t key_length);
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void key_unpack(String *to,Table *form,uint32_t index);
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bool is_key_used(Table *table, uint32_t idx, const MY_BITMAP *fields);
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int key_cmp(KEY_PART_INFO *key_part, const unsigned char *key, uint32_t key_length);
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extern "C" int key_rec_cmp(void *key_info, unsigned char *a, unsigned char *b);
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#endif /* DRIZZLED_KEY_H */
added
removed
drizzled/key.h
