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uint32_t length,int re_read_if_possibly);
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extern uint64_t retrieve_auto_increment(MI_INFO *info,const unsigned char *record);
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#define mi_get_rec_buff_ptr(info,buf) \
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((((info)->s->options & HA_OPTION_PACK_RECORD) && (buf)) ? \
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(buf) - MI_REC_BUFF_OFFSET : (buf))