Merge mysql.com:/home/ram/work/b25301/b25301.4.1

into  mysql.com:/home/ram/work/b25301/b25301.5.0


mysql-test/r/date_formats.result:
  Auto merged
sql-common/my_time.c:
  Merging.
  Reverted fix for 19370 DateTime datatype in MySQL has two bugs in it
  as it's not a bug.

mysql-test/r/date_formats.result

@@ -186,12 +186,12 @@ date	format	datetime
 2003-01-02 02:11:12.12345AM	%Y-%m-%d %h:%i:%S.%f %p	2003-01-02 02:11:12.123450
 2003-01-02 12:11:12.12345 am	%Y-%m-%d %h:%i:%S.%f%p	2003-01-02 00:11:12.123450
 2003-01-02 11:11:12Pm	%Y-%m-%d %h:%i:%S%p	2003-01-02 23:11:12
-10:20:10	%H:%i:%s	0000-00-00 00:00:00
-10:20:10	%h:%i:%s.%f	0000-00-00 00:00:00
-10:20:10	%T	0000-00-00 00:00:00
-10:20:10AM	%h:%i:%s%p	0000-00-00 00:00:00
-10:20:10AM	%r	0000-00-00 00:00:00
-10:20:10.44AM	%h:%i:%s.%f%p	0000-00-00 00:00:00
+10:20:10	%H:%i:%s	0000-00-00 10:20:10
+10:20:10	%h:%i:%s.%f	0000-00-00 10:20:10
+10:20:10	%T	0000-00-00 10:20:10
+10:20:10AM	%h:%i:%s%p	0000-00-00 10:20:10
+10:20:10AM	%r	0000-00-00 10:20:10
+10:20:10.44AM	%h:%i:%s.%f%p	0000-00-00 10:20:10.440000
 15-01-2001 12:59:58	%d-%m-%Y %H:%i:%S	2001-01-15 12:59:58
 15 September 2001	%d %M %Y	2001-09-15 00:00:00
 15 SEPTEMB 2001	%d %M %Y	2001-09-15 00:00:00
@@ -208,13 +208,6 @@ Tuesday 52 2001	%W %V %X	2002-01-01 00:00:00
 15-01-2001	%d-%m-%Y %H:%i:%S	2001-01-15 00:00:00
 15-01-20	%d-%m-%y	2020-01-15 00:00:00
 15-2001-1	%d-%Y-%c	2001-01-15 00:00:00
-Warnings:
-Warning	1292	Truncated incorrect datetime value: '0000-00-00 10:20:10'
-Warning	1292	Truncated incorrect datetime value: '0000-00-00 10:20:10'
-Warning	1292	Truncated incorrect datetime value: '0000-00-00 10:20:10'
-Warning	1292	Truncated incorrect datetime value: '0000-00-00 10:20:10'
-Warning	1292	Truncated incorrect datetime value: '0000-00-00 10:20:10'
-Warning	1292	Truncated incorrect datetime value: '0000-00-00 10:20:10.440000'
 select date,format,DATE(str_to_date(date, format)) as date2 from t1;
 date	format	date2
 2003-01-02 10:11:12	%Y-%m-%d %H:%i:%S	2003-01-02
@@ -255,12 +248,12 @@ date	format	time
 2003-01-02 02:11:12.12345AM	%Y-%m-%d %h:%i:%S.%f %p	02:11:12.123450
 2003-01-02 12:11:12.12345 am	%Y-%m-%d %h:%i:%S.%f%p	00:11:12.123450
 2003-01-02 11:11:12Pm	%Y-%m-%d %h:%i:%S%p	23:11:12
-10:20:10	%H:%i:%s	NULL
-10:20:10	%h:%i:%s.%f	NULL
-10:20:10	%T	NULL
-10:20:10AM	%h:%i:%s%p	NULL
-10:20:10AM	%r	NULL
-10:20:10.44AM	%h:%i:%s.%f%p	NULL
+10:20:10	%H:%i:%s	10:20:10
+10:20:10	%h:%i:%s.%f	10:20:10
+10:20:10	%T	10:20:10
+10:20:10AM	%h:%i:%s%p	10:20:10
+10:20:10AM	%r	10:20:10
+10:20:10.44AM	%h:%i:%s.%f%p	10:20:10.440000
 15-01-2001 12:59:58	%d-%m-%Y %H:%i:%S	12:59:58
 15 September 2001	%d %M %Y	00:00:00
 15 SEPTEMB 2001	%d %M %Y	00:00:00
@@ -277,13 +270,6 @@ Tuesday 52 2001	%W %V %X	00:00:00
 15-01-2001	%d-%m-%Y %H:%i:%S	00:00:00
 15-01-20	%d-%m-%y	00:00:00
 15-2001-1	%d-%Y-%c	00:00:00
-Warnings:
-Warning	1292	Truncated incorrect time value: '0000-00-00 10:20:10'
-Warning	1292	Truncated incorrect time value: '0000-00-00 10:20:10'
-Warning	1292	Truncated incorrect time value: '0000-00-00 10:20:10'
-Warning	1292	Truncated incorrect time value: '0000-00-00 10:20:10'
-Warning	1292	Truncated incorrect time value: '0000-00-00 10:20:10'
-Warning	1292	Truncated incorrect time value: '0000-00-00 10:20:10.440000'
 select date,format,concat(TIME(str_to_date(date, format))) as time2 from t1;
 date	format	time2
 2003-01-02 10:11:12	%Y-%m-%d %H:%i:%S	10:11:12
@@ -293,12 +279,12 @@ date	format	time2
 2003-01-02 02:11:12.12345AM	%Y-%m-%d %h:%i:%S.%f %p	02:11:12.123450
 2003-01-02 12:11:12.12345 am	%Y-%m-%d %h:%i:%S.%f%p	00:11:12.123450
 2003-01-02 11:11:12Pm	%Y-%m-%d %h:%i:%S%p	23:11:12
-10:20:10	%H:%i:%s	NULL
-10:20:10	%h:%i:%s.%f	NULL
-10:20:10	%T	NULL
-10:20:10AM	%h:%i:%s%p	NULL
-10:20:10AM	%r	NULL
-10:20:10.44AM	%h:%i:%s.%f%p	NULL
+10:20:10	%H:%i:%s	10:20:10
+10:20:10	%h:%i:%s.%f	10:20:10
+10:20:10	%T	10:20:10
+10:20:10AM	%h:%i:%s%p	10:20:10
+10:20:10AM	%r	10:20:10
+10:20:10.44AM	%h:%i:%s.%f%p	10:20:10.440000
 15-01-2001 12:59:58	%d-%m-%Y %H:%i:%S	12:59:58
 15 September 2001	%d %M %Y	00:00:00
 15 SEPTEMB 2001	%d %M %Y	00:00:00
@@ -315,13 +301,6 @@ Tuesday 52 2001	%W %V %X	00:00:00
 15-01-2001	%d-%m-%Y %H:%i:%S	00:00:00
 15-01-20	%d-%m-%y	00:00:00
 15-2001-1	%d-%Y-%c	00:00:00
-Warnings:
-Warning	1292	Truncated incorrect time value: '0000-00-00 10:20:10'
-Warning	1292	Truncated incorrect time value: '0000-00-00 10:20:10'
-Warning	1292	Truncated incorrect time value: '0000-00-00 10:20:10'
-Warning	1292	Truncated incorrect time value: '0000-00-00 10:20:10'
-Warning	1292	Truncated incorrect time value: '0000-00-00 10:20:10'
-Warning	1292	Truncated incorrect time value: '0000-00-00 10:20:10.440000'
 select concat('',str_to_date('8:11:2.123456 03-01-02','%H:%i:%S.%f %y-%m-%d'));
 concat('',str_to_date('8:11:2.123456 03-01-02','%H:%i:%S.%f %y-%m-%d'))
 2003-01-02 08:11:02.123456

sql-common/my_time.c

@@ -85,8 +85,7 @@ my_bool check_date(const MYSQL_TIME *ltime, my_bool not_zero_date,
         (!(flags & TIME_INVALID_DATES) &&
          ltime->month && ltime->day > days_in_month[ltime->month-1] &&
          (ltime->month != 2 || calc_days_in_year(ltime->year) != 366 ||
-          ltime->day != 29)) ||
-        (ltime->year == 0 && (ltime->month != 0 || ltime->day != 0)))
+          ltime->day != 29)))
     {
       *was_cut= 2;
       return TRUE;
@@ -410,9 +409,7 @@ str_to_datetime(const char *str, uint length, MYSQL_TIME *l_time,
   if (number_of_fields < 3 ||
       l_time->year > 9999 || l_time->month > 12 ||
       l_time->day > 31 || l_time->hour > 23 ||
-      l_time->minute > 59 || l_time->second > 59 ||
-      (l_time->year == 0 && l_time->month == 0 && l_time->day == 0 && 
-       (l_time->hour != 0 || l_time->minute != 0 || l_time->second != 0)))
+      l_time->minute > 59 || l_time->second > 59)
   {
     /* Only give warning for a zero date if there is some garbage after */
     if (!not_zero_date)                         /* If zero date */