summaryrefslogtreecommitdiffstats
path: root/sql/sql_time.cc
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--sql/sql_time.cc1385
1 files changed, 1385 insertions, 0 deletions
diff --git a/sql/sql_time.cc b/sql/sql_time.cc
new file mode 100644
index 00000000..8bb96dfa
--- /dev/null
+++ b/sql/sql_time.cc
@@ -0,0 +1,1385 @@
+/* Copyright (c) 2000, 2010, Oracle and/or its affiliates.
+ Copyright (c) 2009, 2020, MariaDB Corporation.
+
+ 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; version 2 of the License.
+
+ 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */
+
+
+/* Functions to handle date and time */
+
+#include "mariadb.h"
+#include "sql_time.h"
+#include "tztime.h" // struct Time_zone
+#include "sql_class.h" // THD
+#include <m_ctype.h>
+
+
+#define MAX_DAY_NUMBER 3652424L
+
+ /* Some functions to calculate dates */
+
+/*
+ Name description of interval names used in statements.
+
+ 'interval_type_to_name' is ordered and sorted on interval size and
+ interval complexity.
+ Order of elements in 'interval_type_to_name' should correspond to
+ the order of elements in 'interval_type' enum
+
+ See also interval_type, interval_names, append_interval
+*/
+
+LEX_CSTRING interval_type_to_name[INTERVAL_LAST] = {
+ { STRING_WITH_LEN("YEAR")},
+ { STRING_WITH_LEN("QUARTER")},
+ { STRING_WITH_LEN("MONTH")},
+ { STRING_WITH_LEN("WEEK")},
+ { STRING_WITH_LEN("DAY")},
+ { STRING_WITH_LEN("HOUR")},
+ { STRING_WITH_LEN("MINUTE")},
+ { STRING_WITH_LEN("SECOND")},
+ { STRING_WITH_LEN("MICROSECOND")},
+ { STRING_WITH_LEN("YEAR_MONTH")},
+ { STRING_WITH_LEN("DAY_HOUR")},
+ { STRING_WITH_LEN("DAY_MINUTE")},
+ { STRING_WITH_LEN("DAY_SECOND")},
+ { STRING_WITH_LEN("HOUR_MINUTE")},
+ { STRING_WITH_LEN("HOUR_SECOND")},
+ { STRING_WITH_LEN("MINUTE_SECOND")},
+ { STRING_WITH_LEN("DAY_MICROSECOND")},
+ { STRING_WITH_LEN("HOUR_MICROSECOND")},
+ { STRING_WITH_LEN("MINUTE_MICROSECOND")},
+ { STRING_WITH_LEN("SECOND_MICROSECOND")}
+};
+
+int append_interval(String *str, interval_type int_type, const INTERVAL &interval)
+{
+ char buf[64];
+ size_t len;
+ switch (int_type) {
+ case INTERVAL_YEAR:
+ len= my_snprintf(buf,sizeof(buf),"%u", interval.year);
+ break;
+ case INTERVAL_QUARTER:
+ case INTERVAL_MONTH:
+ len= my_snprintf(buf,sizeof(buf),"%u", interval.month);
+ int_type=INTERVAL_MONTH;
+ break;
+ case INTERVAL_WEEK:
+ case INTERVAL_DAY:
+ len= my_snprintf(buf,sizeof(buf),"%u", interval.day);
+ int_type=INTERVAL_DAY;
+ break;
+ case INTERVAL_HOUR:
+ len= my_snprintf(buf,sizeof(buf),"%u", interval.hour);
+ break;
+ case INTERVAL_MINUTE:
+ len= my_snprintf(buf,sizeof(buf),"%u", interval.minute);
+ break;
+ case INTERVAL_SECOND:
+ len= my_snprintf(buf,sizeof(buf),"%u", interval.second);
+ break;
+ case INTERVAL_MICROSECOND:
+ len= my_snprintf(buf,sizeof(buf),"%u", interval.second_part);
+ break;
+ case INTERVAL_YEAR_MONTH:
+ len= my_snprintf(buf,sizeof(buf),"%u-%02u", interval.day, interval.month);
+ break;
+ case INTERVAL_DAY_HOUR:
+ len= my_snprintf(buf,sizeof(buf),"%u %u", interval.day, interval.hour);
+ break;
+ case INTERVAL_DAY_MINUTE:
+ len= my_snprintf(buf,sizeof(buf),"%u %u:%02u", interval.day, interval.hour, interval.minute);
+ break;
+ case INTERVAL_DAY_SECOND:
+ len= my_snprintf(buf,sizeof(buf),"%u %u:%02u:%02u", interval.day, interval.hour, interval.minute, interval.second);
+ break;
+ case INTERVAL_HOUR_MINUTE:
+ len= my_snprintf(buf,sizeof(buf),"%u:%02u", interval.hour, interval.minute);
+ break;
+ case INTERVAL_HOUR_SECOND:
+ len= my_snprintf(buf,sizeof(buf),"%u:%02u:%02u", interval.hour, interval.minute, interval.second);
+ break;
+ case INTERVAL_MINUTE_SECOND:
+ len= my_snprintf(buf,sizeof(buf),"%u:%02u", interval.minute, interval.second);
+ break;
+ case INTERVAL_DAY_MICROSECOND:
+ len= my_snprintf(buf,sizeof(buf),"%u %u:%02u:%02u.%06u", interval.day, interval.hour, interval.minute, interval.second, interval.second_part);
+ break;
+ case INTERVAL_HOUR_MICROSECOND:
+ len= my_snprintf(buf,sizeof(buf),"%u:%02u:%02u.%06u", interval.hour, interval.minute, interval.second, interval.second_part);
+ break;
+ case INTERVAL_MINUTE_MICROSECOND:
+ len= my_snprintf(buf,sizeof(buf),"%u:%02u.%06u", interval.minute, interval.second, interval.second_part);
+ break;
+ case INTERVAL_SECOND_MICROSECOND:
+ len= my_snprintf(buf,sizeof(buf),"%u.%06u", interval.second, interval.second_part);
+ break;
+ default:
+ DBUG_ASSERT(0);
+ len= 0;
+ }
+ return str->append(buf, len) || str->append(' ') ||
+ str->append(interval_type_to_name + int_type);
+}
+
+
+/*
+ Calc weekday from daynr
+ Returns 0 for monday, 1 for tuesday ...
+*/
+
+int calc_weekday(long daynr,bool sunday_first_day_of_week)
+{
+ DBUG_ENTER("calc_weekday");
+ DBUG_RETURN ((int) ((daynr + 5L + (sunday_first_day_of_week ? 1L : 0L)) % 7));
+}
+
+/*
+ The bits in week_format has the following meaning:
+ WEEK_MONDAY_FIRST (0) If not set Sunday is first day of week
+ If set Monday is first day of week
+ WEEK_YEAR (1) If not set Week is in range 0-53
+
+ Week 0 is returned for the the last week of the previous year (for
+ a date at start of january) In this case one can get 53 for the
+ first week of next year. This flag ensures that the week is
+ relevant for the given year. Note that this flag is only
+ releveant if WEEK_JANUARY is not set.
+
+ If set Week is in range 1-53.
+
+ In this case one may get week 53 for a date in January (when
+ the week is that last week of previous year) and week 1 for a
+ date in December.
+
+ WEEK_FIRST_WEEKDAY (2) If not set Weeks are numbered according
+ to ISO 8601:1988
+ If set The week that contains the first
+ 'first-day-of-week' is week 1.
+
+ ISO 8601:1988 means that if the week containing January 1 has
+ four or more days in the new year, then it is week 1;
+ Otherwise it is the last week of the previous year, and the
+ next week is week 1.
+*/
+
+uint calc_week(const MYSQL_TIME *l_time, uint week_behaviour, uint *year)
+{
+ uint days;
+ ulong daynr=calc_daynr(l_time->year,l_time->month,l_time->day);
+ ulong first_daynr=calc_daynr(l_time->year,1,1);
+ bool monday_first= MY_TEST(week_behaviour & WEEK_MONDAY_FIRST);
+ bool week_year= MY_TEST(week_behaviour & WEEK_YEAR);
+ bool first_weekday= MY_TEST(week_behaviour & WEEK_FIRST_WEEKDAY);
+
+ uint weekday=calc_weekday(first_daynr, !monday_first);
+ *year=l_time->year;
+
+ if (l_time->month == 1 && l_time->day <= 7-weekday)
+ {
+ if (!week_year &&
+ ((first_weekday && weekday != 0) ||
+ (!first_weekday && weekday >= 4)))
+ return 0;
+ week_year= 1;
+ (*year)--;
+ first_daynr-= (days=calc_days_in_year(*year));
+ weekday= (weekday + 53*7- days) % 7;
+ }
+
+ if ((first_weekday && weekday != 0) ||
+ (!first_weekday && weekday >= 4))
+ days= daynr - (first_daynr+ (7-weekday));
+ else
+ days= daynr - (first_daynr - weekday);
+
+ if (week_year && days >= 52*7)
+ {
+ weekday= (weekday + calc_days_in_year(*year)) % 7;
+ if ((!first_weekday && weekday < 4) ||
+ (first_weekday && weekday == 0))
+ {
+ (*year)++;
+ return 1;
+ }
+ }
+ return days/7+1;
+}
+
+ /* Change a daynr to year, month and day */
+ /* Daynr 0 is returned as date 00.00.00 */
+
+bool get_date_from_daynr(long daynr,uint *ret_year,uint *ret_month,
+ uint *ret_day)
+{
+ uint year,temp,leap_day,day_of_year,days_in_year;
+ uchar *month_pos;
+ DBUG_ENTER("get_date_from_daynr");
+
+ if (daynr < 366 || daynr > MAX_DAY_NUMBER)
+ DBUG_RETURN(1);
+
+ year= (uint) (daynr*100 / 36525L);
+ temp=(((year-1)/100+1)*3)/4;
+ day_of_year=(uint) (daynr - (long) year * 365L) - (year-1)/4 +temp;
+ while (day_of_year > (days_in_year= calc_days_in_year(year)))
+ {
+ day_of_year-=days_in_year;
+ (year)++;
+ }
+ leap_day=0;
+ if (days_in_year == 366)
+ {
+ if (day_of_year > 31+28)
+ {
+ day_of_year--;
+ if (day_of_year == 31+28)
+ leap_day=1; /* Handle leapyears leapday */
+ }
+ }
+ *ret_month=1;
+ for (month_pos= days_in_month ;
+ day_of_year > (uint) *month_pos ;
+ day_of_year-= *(month_pos++), (*ret_month)++)
+ ;
+ *ret_year=year;
+ *ret_day=day_of_year+leap_day;
+ DBUG_RETURN(0);
+}
+
+ /* Functions to handle periods */
+
+ulong convert_period_to_month(ulong period)
+{
+ ulong a,b;
+ if (period == 0 || period > 999912)
+ return 0L;
+ if ((a=period/100) < YY_PART_YEAR)
+ a+=2000;
+ else if (a < 100)
+ a+=1900;
+ b=period%100;
+ return a*12+b-1;
+}
+
+
+ulong convert_month_to_period(ulong month)
+{
+ ulong year;
+ if (month == 0L)
+ return 0L;
+ if ((year=month/12) < 100)
+ {
+ year+=(year < YY_PART_YEAR) ? 2000 : 1900;
+ }
+ return year*100+month%12+1;
+}
+
+
+bool
+check_date_with_warn(THD *thd, const MYSQL_TIME *ltime,
+ date_conv_mode_t fuzzydate, timestamp_type ts_type)
+{
+ int unused;
+ if (check_date(ltime, fuzzydate, &unused))
+ {
+ ErrConvTime str(ltime);
+ make_truncated_value_warning(thd, Sql_condition::WARN_LEVEL_WARN,
+ &str, ts_type, nullptr, nullptr, nullptr);
+ return true;
+ }
+ return false;
+}
+
+
+bool
+adjust_time_range_with_warn(THD *thd, MYSQL_TIME *ltime, uint dec)
+{
+ MYSQL_TIME copy= *ltime;
+ ErrConvTime str(&copy);
+ int warnings= 0;
+ if (check_time_range(ltime, dec, &warnings))
+ return true;
+ if (warnings)
+ thd->push_warning_truncated_wrong_value("time", str.ptr());
+ return false;
+}
+
+/*
+ Convert a string to 8-bit representation,
+ for use in str_to_time/str_to_date/str_to_date.
+
+ In the future to_ascii() can be extended to convert
+ non-ASCII digits to ASCII digits
+ (for example, ARABIC-INDIC, DEVANAGARI, BENGALI, and so on)
+ so DATE/TIME/DATETIME values understand digits in the
+ respected scripts.
+*/
+static uint
+to_ascii(CHARSET_INFO *cs,
+ const char *src, size_t src_length,
+ char *dst, size_t dst_length)
+
+{
+ int cnvres;
+ my_wc_t wc;
+ const char *srcend= src + src_length;
+ char *dst0= dst, *dstend= dst + dst_length - 1;
+ while (dst < dstend &&
+ (cnvres= cs->mb_wc(&wc,
+ (const uchar*) src,
+ (const uchar*) srcend)) > 0 &&
+ wc < 128)
+ {
+ src+= cnvres;
+ *dst++= static_cast<char>(wc);
+ }
+ *dst= '\0';
+ return (uint)(dst - dst0);
+}
+
+
+class TemporalAsciiBuffer: public LEX_CSTRING
+{
+ char cnv[32];
+public:
+ TemporalAsciiBuffer(const char *str, size_t length, CHARSET_INFO *cs)
+ {
+ if ((cs->state & MY_CS_NONASCII) != 0)
+ {
+ LEX_CSTRING::str= cnv;
+ LEX_CSTRING::length= to_ascii(cs, str, length, cnv, sizeof(cnv));
+ }
+ else
+ {
+ LEX_CSTRING::str= str;
+ LEX_CSTRING::length= length;
+ }
+ }
+};
+
+
+/* Character set-aware version of ascii_to_datetime_or_date_or_time() */
+bool Temporal::str_to_datetime_or_date_or_time(THD *thd, MYSQL_TIME_STATUS *st,
+ const char *str, size_t length,
+ CHARSET_INFO *cs,
+ date_mode_t fuzzydate)
+{
+ TemporalAsciiBuffer tmp(str, length, cs);
+ return ascii_to_datetime_or_date_or_time(st, tmp.str, tmp.length, fuzzydate)||
+ add_nanoseconds(thd, &st->warnings, fuzzydate, st->nanoseconds);
+}
+
+
+/* Character set-aware version of str_to_datetime_or_date() */
+bool Temporal::str_to_datetime_or_date(THD *thd, MYSQL_TIME_STATUS *status,
+ const char *str, size_t length,
+ CHARSET_INFO *cs,
+ date_mode_t flags)
+{
+ TemporalAsciiBuffer tmp(str, length, cs);
+ return ascii_to_datetime_or_date(status, tmp.str, tmp.length, flags) ||
+ add_nanoseconds(thd, &status->warnings, flags, status->nanoseconds);
+}
+
+
+/* Character set-aware version of ascii_to_temporal() */
+bool Temporal::str_to_temporal(THD *thd, MYSQL_TIME_STATUS *status,
+ const char *str, size_t length, CHARSET_INFO *cs,
+ date_mode_t flags)
+{
+ TemporalAsciiBuffer tmp(str, length, cs);
+ return ascii_to_temporal(status, tmp.str, tmp.length, flags) ||
+ add_nanoseconds(thd, &status->warnings, flags, status->nanoseconds);
+}
+
+
+/* Character set-aware version of str_to_DDhhmmssff() */
+bool Interval_DDhhmmssff::str_to_DDhhmmssff(MYSQL_TIME_STATUS *status,
+ const char *str, size_t length,
+ CHARSET_INFO *cs, ulong max_hour)
+{
+ TemporalAsciiBuffer tmp(str, length, cs);
+ bool rc= ::str_to_DDhhmmssff(tmp.str, tmp.length, this, UINT_MAX32, status);
+ DBUG_ASSERT(status->warnings || !rc);
+ return rc;
+}
+
+
+/*
+ Convert a timestamp string to a MYSQL_TIME value and produce a warning
+ if string was truncated during conversion.
+
+ NOTE
+ See description of str_to_datetime_xxx() for more information.
+*/
+
+bool
+str_to_datetime_with_warn(THD *thd, CHARSET_INFO *cs,
+ const char *str, size_t length, MYSQL_TIME *to,
+ date_mode_t mode)
+{
+ Temporal::Warn_push warn(thd, nullptr, nullptr, nullptr, to, mode);
+ Temporal_hybrid *t= new(to) Temporal_hybrid(thd, &warn, str, length, cs, mode);
+ return !t->is_valid_temporal();
+}
+
+
+bool double_to_datetime_with_warn(THD *thd, double value, MYSQL_TIME *ltime,
+ date_mode_t fuzzydate,
+ const TABLE_SHARE *s, const char *field_name)
+{
+ Temporal::Warn_push warn(thd, s ? s->db.str : nullptr,
+ s ? s->table_name.str : nullptr,
+ field_name, ltime, fuzzydate);
+ Temporal_hybrid *t= new (ltime) Temporal_hybrid(thd, &warn, value, fuzzydate);
+ return !t->is_valid_temporal();
+}
+
+
+bool decimal_to_datetime_with_warn(THD *thd, const my_decimal *value,
+ MYSQL_TIME *ltime,
+ date_mode_t fuzzydate,
+ const TABLE_SHARE *s, const char *field_name)
+{
+ Temporal::Warn_push warn(thd, s ? s->db.str : nullptr,
+ s ? s->table_name.str : nullptr,
+ field_name, ltime, fuzzydate);
+ Temporal_hybrid *t= new (ltime) Temporal_hybrid(thd, &warn, value, fuzzydate);
+ return !t->is_valid_temporal();
+}
+
+
+bool int_to_datetime_with_warn(THD *thd, const Longlong_hybrid &nr,
+ MYSQL_TIME *ltime,
+ date_mode_t fuzzydate,
+ const TABLE_SHARE *s, const char *field_name)
+{
+ /*
+ Note: conversion from an integer to TIME can overflow to '838:59:59.999999',
+ so the conversion result can have fractional digits.
+ */
+ Temporal::Warn_push warn(thd, s ? s->db.str : nullptr,
+ s ? s->table_name.str : nullptr,
+ field_name, ltime, fuzzydate);
+ Temporal_hybrid *t= new (ltime) Temporal_hybrid(thd, &warn, nr, fuzzydate);
+ return !t->is_valid_temporal();
+}
+
+
+/*
+ Convert a datetime from broken-down MYSQL_TIME representation to
+ corresponding TIMESTAMP value.
+
+ SYNOPSIS
+ TIME_to_timestamp()
+ thd - current thread
+ t - datetime in broken-down representation,
+ error_code - 0, if the conversion was successful;
+ ER_WARN_DATA_OUT_OF_RANGE, if t contains datetime value
+ which is out of TIMESTAMP range;
+ ER_WARN_INVALID_TIMESTAMP, if t represents value which
+ doesn't exists (falls into the spring time-gap).
+
+ RETURN
+ Number seconds in UTC since start of Unix Epoch corresponding to t.
+ 0 - in case of ER_WARN_DATA_OUT_OF_RANGE
+*/
+
+my_time_t TIME_to_timestamp(THD *thd, const MYSQL_TIME *t, uint *error_code)
+{
+ thd->time_zone_used= 1;
+ return thd->variables.time_zone->TIME_to_gmt_sec(t, error_code);
+}
+
+
+/*
+ Convert a system time structure to TIME
+*/
+
+void localtime_to_TIME(MYSQL_TIME *to, struct tm *from)
+{
+ to->neg=0;
+ to->second_part=0;
+ to->year= (int) ((from->tm_year+1900) % 10000);
+ to->month= (int) from->tm_mon+1;
+ to->day= (int) from->tm_mday;
+ to->hour= (int) from->tm_hour;
+ to->minute= (int) from->tm_min;
+ to->second= (int) from->tm_sec;
+}
+
+
+void calc_time_from_sec(MYSQL_TIME *to, ulong seconds, ulong microseconds)
+{
+ long t_seconds;
+ // to->neg is not cleared, it may already be set to a useful value
+ to->time_type= MYSQL_TIMESTAMP_TIME;
+ to->year= 0;
+ to->month= 0;
+ to->day= 0;
+ to->hour= seconds/3600L;
+ t_seconds= seconds%3600L;
+ to->minute= t_seconds/60L;
+ to->second= t_seconds%60L;
+ to->second_part= microseconds;
+}
+
+
+/*
+ Parse a format string specification
+
+ SYNOPSIS
+ parse_date_time_format()
+ format_type Format of string (time, date or datetime)
+ format_str String to parse
+ format_length Length of string
+ date_time_format Format to fill in
+
+ NOTES
+ Fills in date_time_format->positions for all date time parts.
+
+ positions marks the position for a datetime element in the format string.
+ The position array elements are in the following order:
+ YYYY-DD-MM HH-MM-DD.FFFFFF AM
+ 0 1 2 3 4 5 6 7
+
+ If positions[0]= 5, it means that year will be the forth element to
+ read from the parsed date string.
+
+ RETURN
+ 0 ok
+ 1 error
+*/
+
+bool parse_date_time_format(timestamp_type format_type,
+ const char *format, uint format_length,
+ DATE_TIME_FORMAT *date_time_format)
+{
+ uint offset= 0, separators= 0;
+ const char *ptr= format, *format_str;
+ const char *end= ptr+format_length;
+ uchar *dt_pos= date_time_format->positions;
+ /* need_p is set if we are using AM/PM format */
+ bool need_p= 0, allow_separator= 0;
+ ulong part_map= 0, separator_map= 0;
+ const char *parts[16];
+
+ date_time_format->time_separator= 0;
+ date_time_format->flag= 0; // For future
+
+ /*
+ Fill position with 'dummy' arguments to found out if a format tag is
+ used twice (This limit's the format to 255 characters, but this is ok)
+ */
+ dt_pos[0]= dt_pos[1]= dt_pos[2]= dt_pos[3]=
+ dt_pos[4]= dt_pos[5]= dt_pos[6]= dt_pos[7]= 255;
+
+ for (; ptr != end; ptr++)
+ {
+ if (*ptr == '%' && ptr+1 != end)
+ {
+ uint UNINIT_VAR(position);
+ switch (*++ptr) {
+ case 'y': // Year
+ case 'Y':
+ position= 0;
+ break;
+ case 'c': // Month
+ case 'm':
+ position= 1;
+ break;
+ case 'd':
+ case 'e':
+ position= 2;
+ break;
+ case 'h':
+ case 'I':
+ case 'l':
+ need_p= 1; // Need AM/PM
+ /* Fall through */
+ case 'k':
+ case 'H':
+ position= 3;
+ break;
+ case 'i':
+ position= 4;
+ break;
+ case 's':
+ case 'S':
+ position= 5;
+ break;
+ case 'f':
+ position= 6;
+ if (dt_pos[5] != offset-1 || ptr[-2] != '.')
+ return 1; // Wrong usage of %f
+ break;
+ case 'p': // AM/PM
+ if (offset == 0) // Can't be first
+ return 0;
+ position= 7;
+ break;
+ default:
+ return 1; // Unknown controll char
+ }
+ if (dt_pos[position] != 255) // Don't allow same tag twice
+ return 1;
+ parts[position]= ptr-1;
+
+ /*
+ If switching from time to date, ensure that all time parts
+ are used
+ */
+ if (part_map && position <= 2 && !(part_map & (1 | 2 | 4)))
+ offset=5;
+ part_map|= (ulong) 1 << position;
+ dt_pos[position]= offset++;
+ allow_separator= 1;
+ }
+ else
+ {
+ /*
+ Don't allow any characters in format as this could easily confuse
+ the date reader
+ */
+ if (!allow_separator)
+ return 1; // No separator here
+ allow_separator= 0; // Don't allow two separators
+ separators++;
+ /* Store in separator_map which parts are punct characters */
+ if (my_ispunct(&my_charset_latin1, *ptr))
+ separator_map|= (ulong) 1 << (offset-1);
+ else if (!my_isspace(&my_charset_latin1, *ptr))
+ return 1;
+ }
+ }
+
+ /* If no %f, specify it after seconds. Move %p up, if necessary */
+ if ((part_map & 32) && !(part_map & 64))
+ {
+ dt_pos[6]= dt_pos[5] +1;
+ parts[6]= parts[5]; // For later test in (need_p)
+ if (dt_pos[6] == dt_pos[7]) // Move %p one step up if used
+ dt_pos[7]++;
+ }
+
+ /*
+ Check that we have not used a non legal format specifier and that all
+ format specifiers have been used
+
+ The last test is to ensure that %p is used if and only if
+ it's needed.
+ */
+ if ((format_type == MYSQL_TIMESTAMP_DATETIME &&
+ !test_all_bits(part_map, (1 | 2 | 4 | 8 | 16 | 32))) ||
+ (format_type == MYSQL_TIMESTAMP_DATE && part_map != (1 | 2 | 4)) ||
+ (format_type == MYSQL_TIMESTAMP_TIME &&
+ !test_all_bits(part_map, 8 | 16 | 32)) ||
+ !allow_separator || // %option should be last
+ (need_p && dt_pos[6] +1 != dt_pos[7]) ||
+ (need_p ^ (dt_pos[7] != 255)))
+ return 1;
+
+ if (dt_pos[6] != 255) // If fractional seconds
+ {
+ /* remove fractional seconds from later tests */
+ uint pos= dt_pos[6] -1;
+ /* Remove separator before %f from sep map */
+ separator_map= ((separator_map & ((ulong) (1 << pos)-1)) |
+ ((separator_map & ~((ulong) (1 << pos)-1)) >> 1));
+ if (part_map & 64)
+ {
+ separators--; // There is always a separator
+ need_p= 1; // force use of separators
+ }
+ }
+
+ /*
+ Remove possible separator before %p from sep_map
+ (This can either be at position 3, 4, 6 or 7) h.m.d.%f %p
+ */
+ if (dt_pos[7] != 255)
+ {
+ if (need_p && parts[7] != parts[6]+2)
+ separators--;
+ }
+ /*
+ Calculate if %p is in first or last part of the datetime field
+
+ At this point we have either %H-%i-%s %p 'year parts' or
+ 'year parts' &H-%i-%s %p" as %f was removed above
+ */
+ offset= dt_pos[6] <= 3 ? 3 : 6;
+ /* Remove separator before %p from sep map */
+ separator_map= ((separator_map & ((ulong) (1 << offset)-1)) |
+ ((separator_map & ~((ulong) (1 << offset)-1)) >> 1));
+
+ format_str= 0;
+ switch (format_type) {
+ case MYSQL_TIMESTAMP_DATE:
+ format_str= known_date_time_formats[INTERNAL_FORMAT].date_format;
+ /* fall through */
+ case MYSQL_TIMESTAMP_TIME:
+ if (!format_str)
+ format_str=known_date_time_formats[INTERNAL_FORMAT].time_format;
+
+ /*
+ If there is no separators, allow the internal format as we can read
+ this. If separators are used, they must be between each part
+ */
+ if (format_length == 6 && !need_p &&
+ !my_charset_bin.strnncoll(format, 6, format_str, 6))
+ return 0;
+ if (separator_map == (1 | 2))
+ {
+ if (format_type == MYSQL_TIMESTAMP_TIME)
+ {
+ if (*(format+2) != *(format+5))
+ break; // Error
+ /* Store the character used for time formats */
+ date_time_format->time_separator= *(format+2);
+ }
+ return 0;
+ }
+ break;
+ case MYSQL_TIMESTAMP_DATETIME:
+ /*
+ If there is no separators, allow the internal format as we can read
+ this. If separators are used, they must be between each part.
+ Between DATE and TIME we also allow space as separator
+ */
+ if ((format_length == 12 && !need_p &&
+ !my_charset_bin.strnncoll(
+ format, 12,
+ known_date_time_formats[INTERNAL_FORMAT].datetime_format,
+ 12)) ||
+ (separators == 5 && separator_map == (1 | 2 | 8 | 16)))
+ return 0;
+ break;
+ default:
+ DBUG_ASSERT(0);
+ break;
+ }
+ return 1; // Error
+}
+
+
+/*
+ Create a DATE_TIME_FORMAT object from a format string specification
+
+ SYNOPSIS
+ date_time_format_make()
+ format_type Format to parse (time, date or datetime)
+ format_str String to parse
+ format_length Length of string
+
+ NOTES
+ The returned object should be freed with my_free()
+
+ RETURN
+ NULL ponter: Error
+ new object
+*/
+
+DATE_TIME_FORMAT
+*date_time_format_make(timestamp_type format_type,
+ const char *format_str, uint format_length)
+{
+ DATE_TIME_FORMAT tmp;
+
+ if (format_length && format_length < 255 &&
+ !parse_date_time_format(format_type, format_str,
+ format_length, &tmp))
+ {
+ tmp.format.str= format_str;
+ tmp.format.length= format_length;
+ return date_time_format_copy((THD *)0, &tmp);
+ }
+ return 0;
+}
+
+
+/*
+ Create a copy of a DATE_TIME_FORMAT object
+
+ SYNOPSIS
+ date_and_time_format_copy()
+ thd Set if variable should be allocated in thread mem
+ format format to copy
+
+ NOTES
+ The returned object should be freed with my_free()
+
+ RETURN
+ NULL ponter: Error
+ new object
+*/
+
+DATE_TIME_FORMAT *date_time_format_copy(THD *thd, DATE_TIME_FORMAT *format)
+{
+ DATE_TIME_FORMAT *new_format;
+ size_t length= sizeof(*format) + format->format.length + 1;
+ char *format_pos;
+
+ if (thd)
+ new_format= (DATE_TIME_FORMAT *) thd->alloc(length);
+ else
+ new_format= (DATE_TIME_FORMAT *) my_malloc(key_memory_DATE_TIME_FORMAT,
+ length, MYF(MY_WME));
+ if (new_format)
+ {
+ /* Put format string after current pos */
+ new_format->format.str= format_pos= (char*) (new_format+1);
+ memcpy((char*) new_format->positions, (char*) format->positions,
+ sizeof(format->positions));
+ new_format->time_separator= format->time_separator;
+ /* We make the string null terminated for easy printf in SHOW VARIABLES */
+ memcpy(format_pos, format->format.str, format->format.length);
+ format_pos[format->format.length]= 0;
+ new_format->format.length= format->format.length;
+ }
+ return new_format;
+}
+
+
+KNOWN_DATE_TIME_FORMAT known_date_time_formats[6]=
+{
+ {"USA", "%m.%d.%Y", "%Y-%m-%d %H.%i.%s", "%h:%i:%s %p" },
+ {"JIS", "%Y-%m-%d", "%Y-%m-%d %H:%i:%s", "%H:%i:%s" },
+ {"ISO", "%Y-%m-%d", "%Y-%m-%d %H:%i:%s", "%H:%i:%s" },
+ {"EUR", "%d.%m.%Y", "%Y-%m-%d %H.%i.%s", "%H.%i.%s" },
+ {"INTERNAL", "%Y%m%d", "%Y%m%d%H%i%s", "%H%i%s" },
+ { 0, 0, 0, 0 }
+};
+
+
+const char *get_date_time_format_str(KNOWN_DATE_TIME_FORMAT *format,
+ timestamp_type type)
+{
+ switch (type) {
+ case MYSQL_TIMESTAMP_DATE:
+ return format->date_format;
+ case MYSQL_TIMESTAMP_DATETIME:
+ return format->datetime_format;
+ case MYSQL_TIMESTAMP_TIME:
+ return format->time_format;
+ default:
+ DBUG_ASSERT(0); // Impossible
+ return 0;
+ }
+}
+
+
+/**
+ Convert TIME/DATE/DATETIME value to String.
+ @param l_time DATE value
+ @param OUT str String to convert to
+ @param dec Number of fractional digits.
+*/
+bool my_TIME_to_str(const MYSQL_TIME *ltime, String *str, uint dec)
+{
+ if (str->alloc(MAX_DATE_STRING_REP_LENGTH))
+ return true;
+ str->set_charset(&my_charset_numeric);
+ str->length(my_TIME_to_str(ltime, const_cast<char*>(str->ptr()), dec));
+ return false;
+}
+
+
+void make_truncated_value_warning(THD *thd,
+ Sql_condition::enum_warning_level level,
+ const ErrConv *sval,
+ timestamp_type time_type,
+ const char *db_name, const char *table_name,
+ const char *field_name)
+{
+ const char *type_str= Temporal::type_name_by_timestamp_type(time_type);
+ return thd->push_warning_wrong_or_truncated_value
+ (level, time_type <= MYSQL_TIMESTAMP_ERROR, type_str, sval->ptr(),
+ db_name, table_name, field_name);
+}
+
+
+/* Daynumber from year 0 to 9999-12-31 */
+#define COMBINE(X) \
+ (((((X)->day * 24LL + (X)->hour) * 60LL + \
+ (X)->minute) * 60LL + (X)->second)*1000000LL + \
+ (X)->second_part)
+#define GET_PART(X, N) X % N ## LL; X/= N ## LL
+
+bool date_add_interval(THD *thd, MYSQL_TIME *ltime, interval_type int_type,
+ const INTERVAL &interval, bool push_warn)
+{
+ long period, sign;
+
+ sign= (interval.neg == (bool)ltime->neg ? 1 : -1);
+
+ switch (int_type) {
+ case INTERVAL_SECOND:
+ case INTERVAL_SECOND_MICROSECOND:
+ case INTERVAL_MICROSECOND:
+ case INTERVAL_MINUTE:
+ case INTERVAL_HOUR:
+ case INTERVAL_MINUTE_MICROSECOND:
+ case INTERVAL_MINUTE_SECOND:
+ case INTERVAL_HOUR_MICROSECOND:
+ case INTERVAL_HOUR_SECOND:
+ case INTERVAL_HOUR_MINUTE:
+ case INTERVAL_DAY_MICROSECOND:
+ case INTERVAL_DAY_SECOND:
+ case INTERVAL_DAY_MINUTE:
+ case INTERVAL_DAY_HOUR:
+ case INTERVAL_DAY:
+ {
+ longlong usec, daynr;
+ my_bool neg= 0;
+ enum enum_mysql_timestamp_type time_type= ltime->time_type;
+
+ if (((ulonglong) interval.day +
+ (ulonglong) interval.hour / 24 +
+ (ulonglong) interval.minute / 24 / 60 +
+ (ulonglong) interval.second / 24 / 60 / 60) > MAX_DAY_NUMBER)
+ goto invalid_date;
+
+ if (time_type != MYSQL_TIMESTAMP_TIME)
+ ltime->day+= calc_daynr(ltime->year, ltime->month, 1) - 1;
+
+ usec= COMBINE(ltime) + sign*COMBINE(&interval);
+
+ if (usec < 0)
+ {
+ neg= 1;
+ usec= -usec;
+ }
+
+ ltime->second_part= GET_PART(usec, 1000000);
+ ltime->second= GET_PART(usec, 60);
+ ltime->minute= GET_PART(usec, 60);
+ ltime->neg^= neg;
+
+ if (time_type == MYSQL_TIMESTAMP_TIME)
+ {
+ if (usec > TIME_MAX_HOUR)
+ goto invalid_date;
+ ltime->hour= static_cast<uint>(usec);
+ ltime->day= 0;
+ return 0;
+ }
+ else if (ltime->neg)
+ goto invalid_date;
+
+ if (int_type != INTERVAL_DAY)
+ ltime->time_type= MYSQL_TIMESTAMP_DATETIME; // Return full date
+
+ ltime->hour= GET_PART(usec, 24);
+ daynr= usec;
+
+ /* Day number from year 0 to 9999-12-31 */
+ if (get_date_from_daynr((long) daynr, &ltime->year, &ltime->month,
+ &ltime->day))
+ goto invalid_date;
+ break;
+ }
+ case INTERVAL_WEEK:
+ period= (calc_daynr(ltime->year,ltime->month,ltime->day) +
+ sign * (long) interval.day);
+ /* Daynumber from year 0 to 9999-12-31 */
+ if (get_date_from_daynr((long) period,&ltime->year,&ltime->month,
+ &ltime->day))
+ goto invalid_date;
+ break;
+ case INTERVAL_YEAR:
+ ltime->year+= sign * (long) interval.year;
+ if ((ulong) ltime->year >= 10000L)
+ goto invalid_date;
+ if (ltime->month == 2 && ltime->day == 29 &&
+ calc_days_in_year(ltime->year) != 366)
+ ltime->day=28; // Was leap-year
+ break;
+ case INTERVAL_YEAR_MONTH:
+ case INTERVAL_QUARTER:
+ case INTERVAL_MONTH:
+ period= (ltime->year*12 + sign * (long) interval.year*12 +
+ ltime->month-1 + sign * (long) interval.month);
+ if ((ulong) period >= 120000L)
+ goto invalid_date;
+ ltime->year= (uint) (period / 12);
+ ltime->month= (uint) (period % 12L)+1;
+ /* Adjust day if the new month doesn't have enough days */
+ if (ltime->day > days_in_month[ltime->month-1])
+ {
+ ltime->day = days_in_month[ltime->month-1];
+ if (ltime->month == 2 && calc_days_in_year(ltime->year) == 366)
+ ltime->day++; // Leap-year
+ }
+ break;
+ default:
+ goto null_date;
+ }
+
+ if (ltime->time_type != MYSQL_TIMESTAMP_TIME)
+ return 0; // Ok
+
+invalid_date:
+ if (push_warn)
+ {
+ push_warning_printf(thd, Sql_condition::WARN_LEVEL_WARN,
+ ER_DATETIME_FUNCTION_OVERFLOW,
+ ER_THD(thd, ER_DATETIME_FUNCTION_OVERFLOW),
+ ltime->time_type == MYSQL_TIMESTAMP_TIME ?
+ "time" : "datetime");
+ }
+null_date:
+ return 1;
+}
+
+
+/*
+ Calculate difference between two datetime values as seconds + microseconds.
+
+ SYNOPSIS
+ calc_time_diff()
+ l_time1 - TIME/DATE/DATETIME value
+ l_time2 - TIME/DATE/DATETIME value
+ l_sign - 1 absolute values are substracted,
+ -1 absolute values are added.
+ seconds_out - Out parameter where difference between
+ l_time1 and l_time2 in seconds is stored.
+ microseconds_out- Out parameter where microsecond part of difference
+ between l_time1 and l_time2 is stored.
+
+ NOTE
+ This function calculates difference between l_time1 and l_time2 absolute
+ values. So one should set l_sign and correct result if he want to take
+ signs into account (i.e. for MYSQL_TIME values).
+
+ RETURN VALUES
+ Returns sign of difference.
+ 1 means negative result
+ 0 means positive result
+
+*/
+
+bool
+calc_time_diff(const MYSQL_TIME *l_time1, const MYSQL_TIME *l_time2,
+ int l_sign, ulonglong *seconds_out, ulong *microseconds_out)
+{
+ long days;
+ bool neg;
+ longlong microseconds;
+
+ /*
+ We suppose that if first argument is MYSQL_TIMESTAMP_TIME
+ the second argument should be TIMESTAMP_TIME also.
+ We should check it before calc_time_diff call.
+ */
+ if (l_time1->time_type == MYSQL_TIMESTAMP_TIME) // Time value
+ days= (long)l_time1->day - l_sign * (long)l_time2->day;
+ else
+ {
+ days= calc_daynr((uint) l_time1->year,
+ (uint) l_time1->month,
+ (uint) l_time1->day);
+ if (l_time2->time_type == MYSQL_TIMESTAMP_TIME)
+ days-= l_sign * (long)l_time2->day;
+ else
+ days-= l_sign*calc_daynr((uint) l_time2->year,
+ (uint) l_time2->month,
+ (uint) l_time2->day);
+ }
+
+ microseconds= ((longlong)days * SECONDS_IN_24H +
+ (longlong)(l_time1->hour*3600LL +
+ l_time1->minute*60L +
+ l_time1->second) -
+ l_sign*(longlong)(l_time2->hour*3600LL +
+ l_time2->minute*60L +
+ l_time2->second)) * 1000000LL +
+ (longlong)l_time1->second_part -
+ l_sign*(longlong)l_time2->second_part;
+
+ neg= 0;
+ if (microseconds < 0)
+ {
+ microseconds= -microseconds;
+ neg= 1;
+ }
+ *seconds_out= (ulonglong) microseconds/1000000L;
+ *microseconds_out= (ulong) (microseconds%1000000L);
+ return neg;
+}
+
+
+bool calc_time_diff(const MYSQL_TIME *l_time1, const MYSQL_TIME *l_time2,
+ int l_sign, MYSQL_TIME *l_time3, date_mode_t fuzzydate)
+{
+ ulonglong seconds;
+ ulong microseconds;
+ bzero((char *) l_time3, sizeof(*l_time3));
+ l_time3->neg= calc_time_diff(l_time1, l_time2, l_sign,
+ &seconds, &microseconds);
+ /*
+ For MYSQL_TIMESTAMP_TIME only:
+ If first argument was negative and diff between arguments
+ is non-zero we need to swap sign to get proper result.
+ */
+ if (l_time1->neg && (seconds || microseconds))
+ l_time3->neg= 1 - l_time3->neg; // Swap sign of result
+
+ /*
+ seconds is longlong, when casted to long it may become a small number
+ even if the original seconds value was too large and invalid.
+ as a workaround we limit seconds by a large invalid long number
+ ("invalid" means > TIME_MAX_SECOND)
+ */
+ set_if_smaller(seconds, INT_MAX32);
+ calc_time_from_sec(l_time3, (ulong) seconds, microseconds);
+ return ((fuzzydate & TIME_NO_ZERO_DATE) && (seconds == 0) &&
+ (microseconds == 0));
+}
+
+
+/*
+ Compares 2 MYSQL_TIME structures
+
+ SYNOPSIS
+ my_time_compare()
+
+ a - first time
+ b - second time
+
+ RETURN VALUE
+ -1 - a < b
+ 0 - a == b
+ 1 - a > b
+
+*/
+
+int my_time_compare(const MYSQL_TIME *a, const MYSQL_TIME *b)
+{
+ ulonglong a_t= pack_time(a);
+ ulonglong b_t= pack_time(b);
+
+ if (a_t < b_t)
+ return -1;
+ if (a_t > b_t)
+ return 1;
+
+ return 0;
+}
+
+
+/**
+ Convert TIME to DATETIME.
+ @param ltime The value to convert.
+ @return false on success, true of error (negative time).
+*/
+bool time_to_datetime(MYSQL_TIME *ltime)
+{
+ DBUG_ASSERT(ltime->time_type == MYSQL_TIMESTAMP_TIME);
+ DBUG_ASSERT(ltime->year == 0);
+ DBUG_ASSERT(ltime->month == 0);
+ DBUG_ASSERT(ltime->day == 0);
+ if (ltime->neg)
+ return true;
+ uint day= ltime->hour / 24;
+ ltime->hour%= 24;
+ ltime->month= day / 31;
+ ltime->day= day % 31;
+ return false;
+}
+
+
+/*** Conversion from TIME to DATETIME ***/
+
+/*
+ Simple case: TIME is within normal 24 hours internal.
+ Mix DATE part of ldate and TIME part of ltime together.
+*/
+static void
+mix_date_and_time_simple(MYSQL_TIME *ldate, const MYSQL_TIME *ltime)
+{
+ DBUG_ASSERT(ldate->time_type == MYSQL_TIMESTAMP_DATE ||
+ ldate->time_type == MYSQL_TIMESTAMP_DATETIME);
+ ldate->hour= ltime->hour;
+ ldate->minute= ltime->minute;
+ ldate->second= ltime->second;
+ ldate->second_part= ltime->second_part;
+ ldate->time_type= MYSQL_TIMESTAMP_DATETIME;
+}
+
+
+/*
+ Complex case: TIME is negative or outside of the 24 hour interval.
+*/
+static void
+mix_date_and_time_complex(MYSQL_TIME *ldate, const MYSQL_TIME *ltime)
+{
+ DBUG_ASSERT(ldate->time_type == MYSQL_TIMESTAMP_DATE ||
+ ldate->time_type == MYSQL_TIMESTAMP_DATETIME);
+ ulonglong seconds;
+ ulong days, useconds;
+ int sign= ltime->neg ? 1 : -1;
+ ldate->neg= calc_time_diff(ldate, ltime, sign, &seconds, &useconds);
+
+ DBUG_ASSERT(!ldate->neg);
+ DBUG_ASSERT(ldate->year > 0);
+
+ days= (long) (seconds / SECONDS_IN_24H);
+ calc_time_from_sec(ldate, seconds % SECONDS_IN_24H, useconds);
+ get_date_from_daynr(days, &ldate->year, &ldate->month, &ldate->day);
+ ldate->time_type= MYSQL_TIMESTAMP_DATETIME;
+}
+
+
+/**
+ Mix a date value and a time value.
+
+ @param IN/OUT ldate Date value.
+ @param ltime Time value.
+*/
+static void
+mix_date_and_time(MYSQL_TIME *to, const MYSQL_TIME *from)
+{
+ if (!from->neg && from->hour < 24)
+ mix_date_and_time_simple(to, from);
+ else
+ mix_date_and_time_complex(to, from);
+}
+
+
+/**
+ Get current date in DATE format
+*/
+void set_current_date(THD *thd, MYSQL_TIME *to)
+{
+ thd->variables.time_zone->gmt_sec_to_TIME(to, thd->query_start());
+ thd->time_zone_used= 1;
+ datetime_to_date(to);
+}
+
+
+/**
+ 5.5 compatible conversion from TIME to DATETIME
+*/
+static bool
+time_to_datetime_old(THD *thd, const MYSQL_TIME *from, MYSQL_TIME *to)
+{
+ DBUG_ASSERT(from->time_type == MYSQL_TIMESTAMP_TIME);
+
+ if (from->neg)
+ return true;
+
+ /* Set the date part */
+ uint day= from->hour / 24;
+ to->day= day % 31;
+ to->month= day / 31;
+ to->year= 0;
+ /* Set the time part */
+ to->hour= from->hour % 24;
+ to->minute= from->minute;
+ to->second= from->second;
+ to->second_part= from->second_part;
+ /* set sign and type */
+ to->neg= 0;
+ to->time_type= MYSQL_TIMESTAMP_DATETIME;
+ return false;
+}
+
+
+/**
+ Convert time to datetime.
+
+ The time value is added to the current datetime value.
+ @param IN ltime Time value to convert from.
+ @param OUT ltime2 Datetime value to convert to.
+*/
+bool
+time_to_datetime(THD *thd, const MYSQL_TIME *from, MYSQL_TIME *to)
+{
+ if (thd->variables.old_behavior & OLD_MODE_ZERO_DATE_TIME_CAST)
+ return time_to_datetime_old(thd, from, to);
+ set_current_date(thd, to);
+ mix_date_and_time(to, from);
+ return false;
+}
+
+
+bool
+time_to_datetime_with_warn(THD *thd,
+ const MYSQL_TIME *from, MYSQL_TIME *to,
+ date_conv_mode_t fuzzydate)
+{
+ int warn= 0;
+ DBUG_ASSERT(from->time_type == MYSQL_TIMESTAMP_TIME);
+ /*
+ After time_to_datetime() we need to do check_date(), as
+ the caller may want TIME_NO_ZERO_DATE or TIME_NO_ZERO_IN_DATE.
+ Note, the SQL standard time->datetime conversion mode always returns
+ a valid date based on CURRENT_DATE. So we need to do check_date()
+ only in the old mode.
+ */
+ if (time_to_datetime(thd, from, to) ||
+ ((thd->variables.old_behavior & OLD_MODE_ZERO_DATE_TIME_CAST) &&
+ check_date(to, fuzzydate, &warn)))
+ {
+ ErrConvTime str(from);
+ thd->push_warning_truncated_wrong_value("datetime", str.ptr());
+ return true;
+ }
+ return false;
+}
+
+
+longlong pack_time(const MYSQL_TIME *my_time)
+{
+ return ((((((my_time->year * 13ULL +
+ my_time->month) * 32ULL +
+ my_time->day) * 24ULL +
+ my_time->hour) * 60ULL +
+ my_time->minute) * 60ULL +
+ my_time->second) * 1000000ULL +
+ my_time->second_part) * (my_time->neg ? -1 : 1);
+}
+
+#define get_one(WHERE, FACTOR) WHERE= (ulong)(packed % FACTOR); packed/= FACTOR
+
+void unpack_time(longlong packed, MYSQL_TIME *my_time,
+ enum_mysql_timestamp_type ts_type)
+{
+ if ((my_time->neg= packed < 0))
+ packed= -packed;
+ get_one(my_time->second_part, 1000000ULL);
+ get_one(my_time->second, 60U);
+ get_one(my_time->minute, 60U);
+ get_one(my_time->hour, 24U);
+ get_one(my_time->day, 32U);
+ get_one(my_time->month, 13U);
+ my_time->year= (uint)packed;
+ my_time->time_type= ts_type;
+ switch (ts_type) {
+ case MYSQL_TIMESTAMP_TIME:
+ my_time->hour+= (my_time->month * 32 + my_time->day) * 24;
+ my_time->month= my_time->day= 0;
+ break;
+ case MYSQL_TIMESTAMP_DATE:
+ my_time->hour= my_time->minute= my_time->second= my_time->second_part= 0;
+ break;
+ case MYSQL_TIMESTAMP_NONE:
+ case MYSQL_TIMESTAMP_ERROR:
+ DBUG_ASSERT(0);
+ case MYSQL_TIMESTAMP_DATETIME:
+ break;
+ }
+}