mysql_time.h
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上传日期:2022-05-23
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- /* Copyright (C) 2004 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 */
- #ifndef _mysql_time_h_
- #define _mysql_time_h_
- /*
- Time declarations shared between the server and client API:
- you should not add anything to this header unless it's used
- (and hence should be visible) in mysql.h.
- If you're looking for a place to add new time-related declaration,
- it's most likely my_time.h. See also "C API Handling of Date
- and Time Values" chapter in documentation.
- */
- enum enum_mysql_timestamp_type
- {
- MYSQL_TIMESTAMP_NONE= -2, MYSQL_TIMESTAMP_ERROR= -1,
- MYSQL_TIMESTAMP_DATE= 0, MYSQL_TIMESTAMP_DATETIME= 1, MYSQL_TIMESTAMP_TIME= 2
- };
- /*
- Structure which is used to represent datetime values inside MySQL.
- We assume that values in this structure are normalized, i.e. year <= 9999,
- month <= 12, day <= 31, hour <= 23, hour <= 59, hour <= 59. Many functions
- in server such as my_system_gmt_sec() or make_time() family of functions
- rely on this (actually now usage of make_*() family relies on a bit weaker
- restriction). Also functions that produce MYSQL_TIME as result ensure this.
- There is one exception to this rule though if this structure holds time
- value (time_type == MYSQL_TIMESTAMP_TIME) days and hour member can hold
- bigger values.
- */
- typedef struct st_mysql_time
- {
- unsigned int year, month, day, hour, minute, second;
- unsigned long second_part;
- my_bool neg;
- enum enum_mysql_timestamp_type time_type;
- } MYSQL_TIME;
- #endif /* _mysql_time_h_ */