mrg_info.c
上传用户:romrleung
上传日期:2022-05-23
资源大小:18897k
文件大小:2k
- /* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
- #include "mrg_def.h"
- ulong mrg_position(MRG_INFO *info)
- {
- MRG_TABLE *current_table;
- if (!(current_table = info->current_table) &&
- info->open_tables != info->end_table)
- current_table = info->open_tables;
- return (current_table ?
- (ulong) (current_table->table->lastpos +
- current_table->file_offset) :
- ~(ulong) 0);
- }
- /* If flag != 0 one only gets pos of last record */
- int mrg_info(MRG_INFO *info,register MERGE_INFO *x,int flag)
- {
- MRG_TABLE *current_table;
- DBUG_ENTER("mrg_info");
- if (!(current_table = info->current_table) &&
- info->open_tables != info->end_table)
- current_table = info->open_tables;
- x->recpos = info->current_table ?
- info->current_table->table->lastpos + info->current_table->file_offset :
- (ulong) -1L;
- if (flag != HA_STATUS_POS)
- {
- x->records = info->records;
- x->deleted = info->del;
- x->data_file_length = info->data_file_length;
- x->reclength = info->reclength;
- if (current_table)
- x->errkey = current_table->table->errkey;
- else
- { /* No tables in MRG */
- x->errkey=0;
- }
- x->options = info->options;
- }
- DBUG_RETURN(0);
- }