MySQL 8.0.33
Source Code Documentation
mysql_time.h
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1/* Copyright (c) 2004, 2023, Oracle and/or its affiliates.
2
3 This program is free software; you can redistribute it and/or modify
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5 as published by the Free Software Foundation.
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7 This program is also distributed with certain software (including
8 but not limited to OpenSSL) that is licensed under separate terms,
9 as designated in a particular file or component or in included license
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12 separately licensed software that they have included with MySQL.
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14 Without limiting anything contained in the foregoing, this file,
15 which is part of C Driver for MySQL (Connector/C), is also subject to the
16 Universal FOSS Exception, version 1.0, a copy of which can be found at
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19 This program is distributed in the hope that it will be useful,
20 but WITHOUT ANY WARRANTY; without even the implied warranty of
21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 GNU General Public License, version 2.0, for more details.
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25 along with this program; if not, write to the Free Software
26 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
27
28#ifndef _mysql_time_h_
29#define _mysql_time_h_
30
31/**
32 @file include/mysql_time.h
33 Time declarations shared between the server and client API:
34 you should not add anything to this header unless it's used
35 (and hence should be visible) in mysql.h.
36 If you're looking for a place to add new time-related declaration,
37 it's most likely my_time.h. See also "C API Handling of Date
38 and Time Values" chapter in documentation.
39*/
40
41// Do not not pull in the server header "my_inttypes.h" from client code.
42// IWYU pragma: no_include "my_inttypes.h"
43
47
48 /// Stores year, month and day components.
50
51 /**
52 Stores all date and time components.
53 Value is in UTC for `TIMESTAMP` type.
54 Value is in local time zone for `DATETIME` type.
55 */
57
58 /// Stores hour, minute, second and microsecond.
60
61 /**
62 A temporary type for `DATETIME` or `TIMESTAMP` types equipped with time
63 zone information. After the time zone information is reconciled, the type is
64 converted to MYSQL_TIMESTAMP_DATETIME.
65 */
67};
68
69/*
70 Structure which is used to represent datetime values inside MySQL.
71
72 We assume that values in this structure are normalized, i.e. year <= 9999,
73 month <= 12, day <= 31, hour <= 23, hour <= 59, hour <= 59. Many functions
74 in server such as my_system_gmt_sec() or make_time() family of functions
75 rely on this (actually now usage of make_*() family relies on a bit weaker
76 restriction). Also functions that produce MYSQL_TIME as result ensure this.
77 There is one exception to this rule though if this structure holds time
78 value (time_type == MYSQL_TIMESTAMP_TIME) days and hour member can hold
79 bigger values.
80*/
81typedef struct MYSQL_TIME {
82 unsigned int year, month, day, hour, minute, second;
83 unsigned long second_part; /**< microseconds */
84 bool neg;
86 /// The time zone displacement, specified in seconds.
89
90#endif /* _mysql_time_h_ */
enum_mysql_timestamp_type
Definition: mysql_time.h:44
@ MYSQL_TIMESTAMP_TIME
Stores hour, minute, second and microsecond.
Definition: mysql_time.h:59
@ MYSQL_TIMESTAMP_ERROR
Definition: mysql_time.h:46
@ MYSQL_TIMESTAMP_DATETIME_TZ
A temporary type for DATETIME or TIMESTAMP types equipped with time zone information.
Definition: mysql_time.h:66
@ MYSQL_TIMESTAMP_DATETIME
Stores all date and time components.
Definition: mysql_time.h:56
@ MYSQL_TIMESTAMP_DATE
Stores year, month and day components.
Definition: mysql_time.h:49
@ MYSQL_TIMESTAMP_NONE
Definition: mysql_time.h:45
struct MYSQL_TIME MYSQL_TIME
Definition: mysql_time.h:81
int time_zone_displacement
The time zone displacement, specified in seconds.
Definition: mysql_time.h:87
unsigned long second_part
microseconds
Definition: mysql_time.h:83
unsigned int second
Definition: mysql_time.h:82
enum enum_mysql_timestamp_type time_type
Definition: mysql_time.h:85
unsigned int hour
Definition: mysql_time.h:82
unsigned int minute
Definition: mysql_time.h:82
unsigned int month
Definition: mysql_time.h:82
unsigned int day
Definition: mysql_time.h:82
bool neg
Definition: mysql_time.h:84
unsigned int year
Definition: mysql_time.h:82