Commit 24dd3ea8 authored by unknown's avatar unknown
Browse files

Merge bk-internal.mysql.com:/home/bk/mysql-4.1 

into mysql.com:/home/dlenev/src/mysql-4.1-bg8086
parents 56ea7702 4594ea1f

mysql-test/r/func_sapdb.result

+3 −0
Original line number Diff line number Diff line
@@ -185,6 +185,7 @@ insert into test values 
('2001-01-01 01:01:01', '-01:01:01', '-23:59:59', "1997-12-31 23:59:59.000001"),

('1997-12-31 23:59:59.000001', '-23:59:59', '-01:01:01', '2001-01-01 01:01:01'),

('2001-01-01 01:01:01', '01:01:01', '-1 01:01:01', null),

('2001-01-01 01:01:01', '-01:01:01', '1 01:01:01', '2001-01-01 01:01:01'),

('2001-01-01 01:01:01', null, '-1 01:01:01', null),

(null, null, null, null),

('2001-01-01 01:01:01', '01:01:01', '1 01:01:01', '2001-01-01 01:01:01');
@@ -194,6 +195,7 @@ ttt qqq 
2001-01-01 00:00:00	-25:01:00

1997-12-31 00:00:00	-25:01:00

2001-01-01 02:02:02	-24:00:00

2001-01-01 00:00:00	24:00:00

NULL	NULL

NULL	NULL

2001-01-01 02:02:02	26:02:02
@@ -203,6 +205,7 @@ ttt qqq 
26305:01:02	22:58:58

-26305:01:02	-22:58:58

NULL	26:02:02

00:00:00	-26:02:02

NULL	NULL

NULL	NULL

00:00:00	-24:00:00

mysql-test/t/func_sapdb.test

+1 −0
Original line number Diff line number Diff line
@@ -100,6 +100,7 @@ insert into test values 
('2001-01-01 01:01:01', '-01:01:01', '-23:59:59', "1997-12-31 23:59:59.000001"),

('1997-12-31 23:59:59.000001', '-23:59:59', '-01:01:01', '2001-01-01 01:01:01'),

('2001-01-01 01:01:01', '01:01:01', '-1 01:01:01', null),

('2001-01-01 01:01:01', '-01:01:01', '1 01:01:01', '2001-01-01 01:01:01'),

('2001-01-01 01:01:01', null, '-1 01:01:01', null),

(null, null, null, null),

('2001-01-01 01:01:01', '01:01:01', '1 01:01:01', '2001-01-01 01:01:01');

sql/item_timefunc.cc

+104 −69
Original line number Diff line number Diff line
@@ -761,6 +761,81 @@ static bool get_interval_info(const char *str,uint length,CHARSET_INFO *cs, 
}





/*

  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 TIME values).



  RETURN VALUES

    Returns sign of difference.

    1 means negative result

    0 means positive result



*/



static bool calc_time_diff(TIME *l_time1, TIME *l_time2, int l_sign,

                           longlong *seconds_out, long *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= l_time1->day - l_sign*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*l_time2->day;

    else

      days-= l_sign*calc_daynr((uint) l_time2->year,

			       (uint) l_time2->month,

			       (uint) l_time2->day);

  }



  microseconds= ((longlong)days*LL(86400) +

                 (longlong)(l_time1->hour*3600L +

                            l_time1->minute*60L +

                            l_time1->second) -

                 l_sign*(longlong)(l_time2->hour*3600L +

                                   l_time2->minute*60L +

                                   l_time2->second)) * LL(1000000) +

                (longlong)l_time1->second_part -

                l_sign*(longlong)l_time2->second_part;



  neg= 0;

  if (microseconds < 0)

  {

    microseconds= -microseconds;

    neg= 1;

  }

  *seconds_out= microseconds/1000000L;

  *microseconds_out= (long) (microseconds%1000000L);

  return neg;

}





longlong Item_func_period_add::val_int()

{

  DBUG_ASSERT(fixed == 1);
@@ -2332,11 +2407,11 @@ String *Item_func_add_time::val_str(String *str) 
  DBUG_ASSERT(fixed == 1);

  TIME l_time1, l_time2, l_time3;

  bool is_time= 0;

  long microseconds, seconds, days= 0;

  long days, microseconds;

  longlong seconds;

  int l_sign= sign;



  null_value=0;

  l_time3.neg= 0;

  if (is_date)                        // TIMESTAMP function

  {

    if (get_arg0_date(&l_time1,1) ||
@@ -2352,51 +2427,26 @@ String *Item_func_add_time::val_str(String *str) 
        l_time2.time_type == MYSQL_TIMESTAMP_DATETIME)

      goto null_date;

    is_time= (l_time1.time_type == MYSQL_TIMESTAMP_TIME);

    if (is_time && (l_time2.neg == l_time1.neg && l_time1.neg))

      l_time3.neg= 1;

  }

  if (l_time1.neg != l_time2.neg)

    l_sign= -l_sign;



  microseconds= l_time1.second_part + l_sign*l_time2.second_part;

  seconds= (l_time1.hour*3600L + l_time1.minute*60L + l_time1.second +

	    (l_time2.day*86400L + l_time2.hour*3600L +

	     l_time2.minute*60L + l_time2.second)*l_sign);

  if (is_time)

    seconds+= l_time1.day*86400L;

  else

    days+= calc_daynr((uint) l_time1.year,(uint) l_time1.month,

		      (uint) l_time1.day);

  seconds= seconds + microseconds/1000000L;

  microseconds= microseconds%1000000L;

  days+= seconds/86400L;

  seconds= seconds%86400L;

  l_time3.neg= calc_time_diff(&l_time1, &l_time2, -l_sign,

			      &seconds, &microseconds);



  if (microseconds < 0)

  {

    microseconds+= 1000000L;

    seconds--;

  }

  if (seconds < 0)

  {

    days+= seconds/86400L - 1;

    seconds+= 86400L;

  }

  if (days < 0)

  {

    if (!is_time)

  /*

    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



  if (!is_time && l_time3.neg)

    goto null_date;

    if (microseconds)

    {

      microseconds= 1000000L - microseconds;

      seconds++; 

    }

    seconds= 86400L - seconds;

    days= -(++days);

    l_time3.neg= 1;

  }



  calc_time_from_sec(&l_time3, seconds, microseconds);

  days= (long)(seconds/86400L);



  calc_time_from_sec(&l_time3, (long)(seconds%86400L), microseconds);

  if (!is_time)

  {

    get_date_from_daynr(days,&l_time3.year,&l_time3.month,&l_time3.day);
@@ -2452,8 +2502,8 @@ void Item_func_add_time::print(String *str) 
String *Item_func_timediff::val_str(String *str)

{

  DBUG_ASSERT(fixed == 1);

  longlong microseconds;

  long days;

  longlong seconds;

  long microseconds;

  int l_sign= 1;

  TIME l_time1 ,l_time2, l_time3;
@@ -2466,33 +2516,18 @@ String *Item_func_timediff::val_str(String *str) 
  if (l_time1.neg != l_time2.neg)

    l_sign= -l_sign;



  if (l_time1.time_type == MYSQL_TIMESTAMP_TIME) // Time value

    days= l_time1.day - l_sign*l_time2.day;

  else                                      // DateTime value

    days= (calc_daynr((uint) l_time1.year,

		      (uint) l_time1.month,

		      (uint) l_time1.day) - 

	   l_sign*calc_daynr((uint) l_time2.year,

			     (uint) l_time2.month,

			     (uint) l_time2.day));



  microseconds= ((longlong)days*86400L +

                 l_time1.hour*3600L + l_time1.minute*60L + l_time1.second -

                 (longlong)l_sign*(l_time2.hour*3600L + l_time2.minute*60L +

                                   l_time2.second))*1000000 +

                 l_time1.second_part - l_sign*l_time2.second_part;



  l_time3.neg= 0;

  if (microseconds < 0)

  {

    microseconds= -microseconds;

    l_time3.neg= 1;

  }

  if ((l_time2.neg == l_time1.neg) && l_time1.neg && microseconds)

    l_time3.neg= l_time3.neg ? 0 : 1;

  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



  calc_time_from_sec(&l_time3, (long)(microseconds/1000000),

                               (long)(microseconds%1000000));

  calc_time_from_sec(&l_time3, (long) seconds, microseconds);



  if (!make_datetime(l_time1.second_part || l_time2.second_part ?

		     TIME_MICROSECOND : TIME_ONLY,