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MDEV-17203 Move fractional second truncation from Item_xxx_typecast::get_date() to Time and Datetime constructors

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This commit is contained in:
Alexander Barkov
2018-09-16 12:40:57 +04:00
parent 171fbbb968
commit d93399746d
6 changed files with 68 additions and 59 deletions
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23
mysql-test/main/timezone2.result
View File

@ -332,3 +332,26 @@ NULL
#
# End of 5.3 tests
#
#
# Start of 10.4 tests
#
#
# MDEV-17203 Move fractional second truncation from Item_xxx_typecast::get_date() to Time and Datetime constructors
# (an addition for the test for MDEV-4653)
SET timestamp=unix_timestamp('2001-02-03 10:20:30');
SET old_mode=ZERO_DATE_TIME_CAST;
SELECT CONVERT_TZ(TIME('00:00:00'),'+00:00','+7:5');
CONVERT_TZ(TIME('00:00:00'),'+00:00','+7:5')
NULL
Warnings:
Warning 1292 Truncated incorrect datetime value: '00:00:00'
SELECT CONVERT_TZ(TIME('2010-01-01 00:00:00'),'+00:00','+7:5');
CONVERT_TZ(TIME('2010-01-01 00:00:00'),'+00:00','+7:5')
NULL
Warnings:
Warning 1292 Truncated incorrect datetime value: '00:00:00'
SET old_mode=DEFAULT;
SET timestamp=DEFAULT;
#
# End of 10.4 tests
#

19
mysql-test/main/timezone2.test
View File

@ -308,3 +308,22 @@ SELECT CONVERT_TZ('2001-10-08 00:00:00', MAKE_SET(0,'+01:00'), '+00:00' );
--echo #
--echo # End of 5.3 tests
--echo #
--echo #
--echo # Start of 10.4 tests
--echo #
--echo #
--echo # MDEV-17203 Move fractional second truncation from Item_xxx_typecast::get_date() to Time and Datetime constructors
--echo # (an addition for the test for MDEV-4653)
SET timestamp=unix_timestamp('2001-02-03 10:20:30');
SET old_mode=ZERO_DATE_TIME_CAST;
SELECT CONVERT_TZ(TIME('00:00:00'),'+00:00','+7:5');
SELECT CONVERT_TZ(TIME('2010-01-01 00:00:00'),'+00:00','+7:5');
SET old_mode=DEFAULT;
SET timestamp=DEFAULT;
--echo #
--echo # End of 10.4 tests
--echo #

37
sql/item_timefunc.cc
View File

@ -2474,43 +2474,26 @@ void Item_char_typecast::fix_length_and_dec_internal(CHARSET_INFO *from_cs)
bool Item_time_typecast::get_date(MYSQL_TIME *ltime, ulonglong fuzzy_date)
{
Time tm(args[0], Time::Options_for_cast());
if ((null_value= !tm.is_valid_time()))
return true;
tm.copy_to_mysql_time(ltime);
if (decimals < TIME_SECOND_PART_DIGITS)
my_time_trunc(ltime, decimals);
return (fuzzy_date & TIME_TIME_ONLY) ? 0 :
(null_value= check_date_with_warn(ltime, fuzzy_date,
MYSQL_TIMESTAMP_ERROR));
Time *tm= new(ltime) Time(args[0], Time::Options_for_cast(),
MY_MIN(decimals, TIME_SECOND_PART_DIGITS));
return (null_value= !tm->is_valid_time());
}
bool Item_date_typecast::get_date(MYSQL_TIME *ltime, ulonglong fuzzy_date)
{
fuzzy_date |= sql_mode_for_dates(current_thd);
if (get_arg0_date(ltime, fuzzy_date & ~TIME_TIME_ONLY))
return 1;
if (make_date_with_warn(ltime, fuzzy_date, MYSQL_TIMESTAMP_DATE))
return (null_value= 1);
return 0;
fuzzy_date= (fuzzy_date | sql_mode_for_dates(current_thd)) & ~TIME_TIME_ONLY;
Date *d= new(ltime) Date(current_thd, args[0], fuzzy_date);
return (null_value= !d->is_valid_date());
}
bool Item_datetime_typecast::get_date(MYSQL_TIME *ltime, ulonglong fuzzy_date)
{
fuzzy_date |= sql_mode_for_dates(current_thd);
if (get_arg0_date(ltime, fuzzy_date & ~TIME_TIME_ONLY))
return 1;
if (decimals < TIME_SECOND_PART_DIGITS)
my_time_trunc(ltime, decimals);
DBUG_ASSERT(ltime->time_type != MYSQL_TIMESTAMP_TIME);
ltime->time_type= MYSQL_TIMESTAMP_DATETIME;
return 0;
fuzzy_date= (fuzzy_date | sql_mode_for_dates(current_thd)) & ~TIME_TIME_ONLY;
Datetime *dt= new(ltime) Datetime(current_thd, args[0], fuzzy_date,
MY_MIN(decimals, TIME_SECOND_PART_DIGITS));
return (null_value= !dt->is_valid_datetime());
}

30
sql/sql_time.cc
View File

@ -1185,36 +1185,6 @@ bool time_to_datetime(MYSQL_TIME *ltime)
}
/**
Return a valid DATE or DATETIME value from an arbitrary MYSQL_TIME.
If ltime is TIME, it's first converted to DATETIME.
If ts_type is DATE, hhmmss is set to zero.
The date part of the result is checked against fuzzy_date.
@param ltime The value to convert.
@param fuzzy_date Flags to check date.
@param ts_type The type to convert to.
@return false on success, true of error (negative time).*/
bool
make_date_with_warn(MYSQL_TIME *ltime, ulonglong fuzzy_date,
timestamp_type ts_type)
{
DBUG_ASSERT(ts_type == MYSQL_TIMESTAMP_DATE ||
ts_type == MYSQL_TIMESTAMP_DATETIME);
if (ltime->time_type == MYSQL_TIMESTAMP_TIME && time_to_datetime(ltime))
{
/* e.g. negative time */
ErrConvTime str(ltime);
make_truncated_value_warning(current_thd, Sql_condition::WARN_LEVEL_WARN,
&str, ts_type, 0);
return true;
}
if ((ltime->time_type= ts_type) == MYSQL_TIMESTAMP_DATE)
ltime->hour= ltime->minute= ltime->second= ltime->second_part= 0;
return check_date_with_warn(ltime, fuzzy_date, ts_type);
}
/*
Convert a TIME value to DAY-TIME interval, e.g. for extraction:
EXTRACT(DAY FROM x), EXTRACT(HOUR FROM x), etc.

2
sql/sql_time.h
View File

@ -168,8 +168,6 @@ check_date(const MYSQL_TIME *ltime, ulonglong flags, int *was_cut)
}
bool check_date_with_warn(const MYSQL_TIME *ltime, ulonglong fuzzy_date,
timestamp_type ts_type);
bool make_date_with_warn(MYSQL_TIME *ltime,
ulonglong fuzzy_date, timestamp_type ts_type);
bool adjust_time_range_with_warn(MYSQL_TIME *ltime, uint dec);
longlong pack_time(const MYSQL_TIME *my_time);

16
sql/sql_type.h
View File

@ -471,6 +471,12 @@ protected:
bool str_to_datetime(MYSQL_TIME_STATUS *st, const char *str, size_t length,
CHARSET_INFO *cs, sql_mode_t fuzzydate);
public:
static void *operator new(size_t size, MYSQL_TIME *ltime) throw()
{
DBUG_ASSERT(size == sizeof(MYSQL_TIME));
return ltime;
}
long fraction_remainder(uint dec) const
{
return my_time_fraction_remainder(second_part, dec);
@ -772,6 +778,11 @@ public:
:Temporal(Time(warn, Sec6(d), Options()))
{ }
Time(Item *item, const Options opt, uint dec)
:Temporal(Time(item, opt))
{
trunc(dec);
}
Time(int *warn, const MYSQL_TIME *from, long curdays, uint dec)
:Temporal(Time(warn, from, curdays))
{
@ -1125,6 +1136,11 @@ public:
DBUG_ASSERT(is_valid_value_slow());
}
Datetime(THD *thd, Item *item, sql_mode_t flags, uint dec)
:Temporal_with_date(Datetime(thd, item, flags))
{
trunc(dec);
}
Datetime(MYSQL_TIME_STATUS *status,
const char *str, size_t len, CHARSET_INFO *cs,
sql_mode_t fuzzydate, uint dec)