sql_time.cc File Reference

Implementation of server functions to handle date and time. More...

#include "sql/sql_time.h"
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "decimal.h"
#include "my_compiler.h"
#include "my_macros.h"
#include "mysql/strings/m_ctype.h"
#include "mysql_com.h"
#include "mysqld_error.h"
#include "nulls.h"
#include "sql-common/my_decimal.h"
#include "sql/current_thd.h"
#include "sql/derror.h"
#include "sql/field.h"
#include "sql/sql_class.h"
#include "sql/sql_const.h"
#include "sql/system_variables.h"
#include "sql/tztime.h"
#include "string_with_len.h"

Functions
my_time_flags_t	DatetimeConversionFlags (const THD *thd)
	Generate flags to use when converting a string to a date or datetime value. More...
static uint	to_ascii (const CHARSET_INFO *cs, const char *src, size_t src_length, char *dst, size_t dst_length)
	Convert a string to 8-bit representation, for use in str_to_time/str_to_date/str_to_date. More...
bool	str_to_time (const CHARSET_INFO *cs, const char *str, size_t length, MYSQL_TIME *l_time, my_time_flags_t flags, MYSQL_TIME_STATUS *status)
	Character set-aware version of str_to_time(). More...
bool	str_to_datetime (const CHARSET_INFO *cs, const char *str, size_t length, MYSQL_TIME *l_time, my_time_flags_t flags, MYSQL_TIME_STATUS *status)
	Character set-aware version of str_to_datetime(). More...
bool	str_to_datetime_with_warn (String *str, MYSQL_TIME *l_time, my_time_flags_t flags)
	Convert a timestamp string to a MYSQL_TIME value and produce a warning if string was truncated during conversion. More...
static bool	lldiv_t_to_datetime (lldiv_t lld, MYSQL_TIME *ltime, my_time_flags_t flags, int *warnings)
	Convert lldiv_t to datetime. More...
bool	decimal_to_datetime (const my_decimal *decimal, MYSQL_TIME *ltime, my_time_flags_t flags)
	Convert decimal value to datetime. More...
bool	my_decimal_to_datetime_with_warn (const my_decimal *decimal, MYSQL_TIME *ltime, my_time_flags_t flags)
	Convert decimal value to datetime value with a warning. More...
bool	double_to_datetime (double nr, MYSQL_TIME *ltime, my_time_flags_t flags)
	Convert double value to datetime. More...
bool	my_double_to_datetime_with_warn (double nr, MYSQL_TIME *ltime, my_time_flags_t flags)
	Convert double value to datetime value with a warning. More...
bool	my_longlong_to_datetime_with_warn (longlong nr, MYSQL_TIME *ltime, my_time_flags_t flags)
	Convert longlong value to datetime value with a warning. More...
static bool	lldiv_t_to_time (lldiv_t lld, MYSQL_TIME *ltime, int *warnings)
	Convert lldiv_t value to time with nanosecond rounding. More...
bool	decimal_to_time (const my_decimal *decimal, MYSQL_TIME *ltime)
	Convert decimal number to TIME. More...
bool	my_decimal_to_time_with_warn (const my_decimal *decimal, MYSQL_TIME *ltime)
	Convert decimal number to TIME. More...
bool	double_to_time (double nr, MYSQL_TIME *ltime)
	Convert double number to TIME. More...
bool	my_double_to_time_with_warn (double nr, MYSQL_TIME *ltime)
	Convert double number to TIME. More...
bool	my_longlong_to_time_with_warn (longlong nr, MYSQL_TIME *ltime)
	Convert longlong number to TIME. More...
bool	datetime_with_no_zero_in_date_to_timeval (const MYSQL_TIME *ltime, const Time_zone &tz, my_timeval *tm, int *warnings)
	Converts a datetime in MYSQL_TIME representation to corresponding struct timeval value. More...
bool	datetime_to_timeval (const MYSQL_TIME *ltime, const Time_zone &tz, my_timeval *tm, int *warnings)
	Convert a datetime MYSQL_TIME representation to corresponding "struct timeval" value. More...
bool	str_to_time_with_warn (String *str, MYSQL_TIME *l_time)
	Convert a time string to a MYSQL_TIME struct and produce a warning if string was cut during conversion. More...
void	time_to_datetime (THD *thd, const MYSQL_TIME *ltime, MYSQL_TIME *ltime2)
	Convert time to datetime. More...
const char *	get_date_time_format_str (const Known_date_time_format *format, enum_mysql_timestamp_type type)
	Return format string according format name. More...
void	make_time (const Date_time_format *format, const MYSQL_TIME *l_time, String *str, uint dec)
	Convert TIME value to String. More...
void	make_date (const Date_time_format *format, const MYSQL_TIME *l_time, String *str)
	Convert DATE value to String. More...
void	make_datetime (const Date_time_format *format, const MYSQL_TIME *l_time, String *str, uint dec)
	Convert DATETIME value to String. More...
bool	my_TIME_to_str (const MYSQL_TIME *ltime, String *str, uint dec)
	Convert TIME/DATE/DATETIME value to String. More...
bool	make_truncated_value_warning (THD *thd, Sql_condition::enum_severity_level level, const ErrConvString &val, enum_mysql_timestamp_type time_type, const char *field_name)
	Create and add a truncated value warning to the THD. More...
bool	date_add_interval_with_warn (THD *thd, MYSQL_TIME *ltime, interval_type int_type, Interval interval)
	Uses propagate_datetime_overflow() to handle and propagate any warnings from date_add_interval() to the THD. More...
void	propagate_datetime_overflow_helper (THD *thd, int *warnings)
	Propagates a DATETIME_OVERFLOW warning from warnings bitfield to DA in thd. More...
my_decimal *	my_decimal_from_datetime_packed (my_decimal *dec, enum enum_field_types type, longlong packed_value)
	Unpack packed numeric temporal value to date/time value and then convert to decimal representation. More...
ulonglong	gmt_time_to_local_time (ulonglong gmt_time)
	This function gets GMT time and adds value of time_zone to get the local time. More...
MYSQL_TIME	my_time_set (uint y, uint m, uint d, uint h, uint mi, uint s, unsigned long ms, bool negative, enum_mysql_timestamp_type type)
	In lieu of a proper constructor for the C struct MYSQL_TIME, this method initializes the struct. More...
uint	actual_decimals (const MYSQL_TIME *ts)
	Return the number of significant second fraction decimals in ts, e.g. More...
size_t	max_fraction (uint decimals)
	For a time fraction with a given number of decimals, return maximum fraction, if any, can be are present in a time value. More...

Variables
const LEX_CSTRING	interval_type_to_name [INTERVAL_LAST]
	Name description of interval names used in statements. More...

Detailed Description

Implementation of server functions to handle date and time.