myrg_range.c
上传用户:romrleung
上传日期:2022-05-23
资源大小:18897k
文件大小:1k
- /* 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 "myrg_def.h"
- ha_rows myrg_records_in_range(MYRG_INFO *info, int inx,
- key_range *min_key, key_range *max_key)
- {
- ha_rows records=0, res;
- MYRG_TABLE *table;
- for (table=info->open_tables ; table != info->end_table ; table++)
- {
- res= mi_records_in_range(table->table, inx, min_key, max_key);
- if (res == HA_POS_ERROR)
- return HA_POS_ERROR;
- if (records > HA_POS_ERROR - res)
- return HA_POS_ERROR-1;
- records+=res;
- }
- return records;
- }