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MDEV-4511 Assertion `scale <= precision' fails on GROUP BY TIMEDIFF with incorrect types

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This commit is contained in:
Alexander Barkov 2014-04-24 16:59:01 +04:00
parent aefddfe3ff
commit d3d3a4b834
11 changed files with 183 additions and 69 deletions
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2
mysql-test/r/ctype_latin1.result
View File

@ -370,7 +370,7 @@ pattern varchar(64) NO
INSERT INTO t1 VALUES (_utf8'2001÷01÷01',_utf8'%Y÷%m÷%d');
SELECT HEX(subject),HEX(pattern),STR_TO_DATE(subject, pattern) FROM t1;
HEX(subject) HEX(pattern) STR_TO_DATE(subject, pattern)
32303031F73031F73031 2559F7256DF72564 2001-01-01 00:00:00
32303031F73031F73031 2559F7256DF72564 2001-01-01 00:00:00.000000
DROP TABLE t1;
SET collation_connection='latin1_bin';
create table t1 select repeat('a',4000) a;

2
mysql-test/r/ctype_sjis.result
View File

@ -172,7 +172,7 @@ pattern varchar(64) NO
INSERT INTO t1 VALUES (_utf8'2001÷01÷01',_utf8'%Y÷%m÷%d');
SELECT HEX(subject),HEX(pattern),STR_TO_DATE(subject, pattern) FROM t1;
HEX(subject) HEX(pattern) STR_TO_DATE(subject, pattern)
323030318180303181803031 25598180256D81802564 2001-01-01 00:00:00
323030318180303181803031 25598180256D81802564 2001-01-01 00:00:00.000000
DROP TABLE t1;
SET collation_connection='sjis_bin';
create table t1 select repeat('a',4000) a;

2
mysql-test/r/ctype_ucs.result
View File

@ -929,7 +929,7 @@ pattern varchar(64) NO
INSERT INTO t1 VALUES (_utf8'2001÷01÷01',_utf8'%Y÷%m÷%d');
SELECT HEX(subject),HEX(pattern),STR_TO_DATE(subject, pattern) FROM t1;
HEX(subject) HEX(pattern) STR_TO_DATE(subject, pattern)
003200300030003100F70030003100F700300031 0025005900F70025006D00F700250064 2001-01-01 00:00:00
003200300030003100F70030003100F700300031 0025005900F70025006D00F700250064 2001-01-01 00:00:00.000000
DROP TABLE t1;
SET NAMES latin1;
SET collation_connection='ucs2_bin';

2
mysql-test/r/ctype_utf8.result
View File

@ -1114,7 +1114,7 @@ pattern varchar(64) NO
INSERT INTO t1 VALUES (_utf8'2001÷01÷01',_utf8'%Y÷%m÷%d');
SELECT HEX(subject),HEX(pattern),STR_TO_DATE(subject, pattern) FROM t1;
HEX(subject) HEX(pattern) STR_TO_DATE(subject, pattern)
32303031C3B73031C3B73031 2559C3B7256DC3B72564 2001-01-01 00:00:00
32303031C3B73031C3B73031 2559C3B7256DC3B72564 2001-01-01 00:00:00.000000
DROP TABLE t1;
SET collation_connection='utf8_bin';
create table t1 select repeat('a',4000) a;

122
mysql-test/r/date_formats.result
View File

@ -60,70 +60,70 @@ insert into t1 values
('15-2001-1', '%d-%Y-%c');
select date,format,str_to_date(date, format) as str_to_date from t1;
date format str_to_date
2003-01-02 10:11:12 %Y-%m-%d %H:%i:%S 2003-01-02 10:11:12
03-01-02 8:11:2.123456 %y-%m-%d %H:%i:%S.%# 2003-01-02 08:11:02
0003-01-02 8:11:2.123456 %Y-%m-%d %H:%i:%S.%# 0003-01-02 08:11:02
03-01-02 8:11:2.123456 %Y-%m-%d %H:%i:%S.%# 2003-01-02 08:11:02
2003-01-02 10:11:12 PM %Y-%m-%d %h:%i:%S %p 2003-01-02 22:11:12
2003-01-02 10:11:12 %Y-%m-%d %H:%i:%S 2003-01-02 10:11:12.000000
03-01-02 8:11:2.123456 %y-%m-%d %H:%i:%S.%# 2003-01-02 08:11:02.000000
0003-01-02 8:11:2.123456 %Y-%m-%d %H:%i:%S.%# 0003-01-02 08:11:02.000000
03-01-02 8:11:2.123456 %Y-%m-%d %H:%i:%S.%# 2003-01-02 08:11:02.000000
2003-01-02 10:11:12 PM %Y-%m-%d %h:%i:%S %p 2003-01-02 22:11:12.000000
2003-01-02 01:11:12.12345AM %Y-%m-%d %h:%i:%S.%f%p 2003-01-02 01:11:12.123450
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 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
2003-01-02 11:11:12Pm %Y-%m-%d %h:%i:%S%p 2003-01-02 23:11:12.000000
10:20:10 %H:%i:%s 0000-00-00 10:20:10.000000
10:20:10 %h:%i:%s.%f 0000-00-00 10:20:10.000000
10:20:10 %T 0000-00-00 10:20:10.000000
10:20:10AM %h:%i:%s%p 0000-00-00 10:20:10.000000
10:20:10AM %r 0000-00-00 10:20:10.000000
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
15 MAY 2001 %d %b %Y 2001-05-15 00:00:00
15th May 2001 %D %b %Y 2001-05-15 00:00:00
Sunday 15 MAY 2001 %W %d %b %Y 2001-05-15 00:00:00
Sund 15 MAY 2001 %W %d %b %Y 2001-05-15 00:00:00
Tuesday 00 2002 %W %U %Y 2002-01-01 00:00:00
Thursday 53 1998 %W %u %Y 1998-12-31 00:00:00
Sunday 01 2001 %W %v %x 2001-01-07 00:00:00
Tuesday 52 2001 %W %V %X 2002-01-01 00:00:00
060 2004 %j %Y 2004-02-29 00:00:00
4 53 1998 %w %u %Y 1998-12-31 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
15-01-2001 12:59:58 %d-%m-%Y %H:%i:%S 2001-01-15 12:59:58.000000
15 September 2001 %d %M %Y 2001-09-15 00:00:00.000000
15 SEPTEMB 2001 %d %M %Y 2001-09-15 00:00:00.000000
15 MAY 2001 %d %b %Y 2001-05-15 00:00:00.000000
15th May 2001 %D %b %Y 2001-05-15 00:00:00.000000
Sunday 15 MAY 2001 %W %d %b %Y 2001-05-15 00:00:00.000000
Sund 15 MAY 2001 %W %d %b %Y 2001-05-15 00:00:00.000000
Tuesday 00 2002 %W %U %Y 2002-01-01 00:00:00.000000
Thursday 53 1998 %W %u %Y 1998-12-31 00:00:00.000000
Sunday 01 2001 %W %v %x 2001-01-07 00:00:00.000000
Tuesday 52 2001 %W %V %X 2002-01-01 00:00:00.000000
060 2004 %j %Y 2004-02-29 00:00:00.000000
4 53 1998 %w %u %Y 1998-12-31 00:00:00.000000
15-01-2001 %d-%m-%Y %H:%i:%S 2001-01-15 00:00:00.000000
15-01-20 %d-%m-%y 2020-01-15 00:00:00.000000
15-2001-1 %d-%Y-%c 2001-01-15 00:00:00.000000
select date,format,concat('',str_to_date(date, format)) as con from t1;
date format con
2003-01-02 10:11:12 %Y-%m-%d %H:%i:%S 2003-01-02 10:11:12
03-01-02 8:11:2.123456 %y-%m-%d %H:%i:%S.%# 2003-01-02 08:11:02
0003-01-02 8:11:2.123456 %Y-%m-%d %H:%i:%S.%# 0003-01-02 08:11:02
03-01-02 8:11:2.123456 %Y-%m-%d %H:%i:%S.%# 2003-01-02 08:11:02
2003-01-02 10:11:12 PM %Y-%m-%d %h:%i:%S %p 2003-01-02 22:11:12
2003-01-02 10:11:12 %Y-%m-%d %H:%i:%S 2003-01-02 10:11:12.000000
03-01-02 8:11:2.123456 %y-%m-%d %H:%i:%S.%# 2003-01-02 08:11:02.000000
0003-01-02 8:11:2.123456 %Y-%m-%d %H:%i:%S.%# 0003-01-02 08:11:02.000000
03-01-02 8:11:2.123456 %Y-%m-%d %H:%i:%S.%# 2003-01-02 08:11:02.000000
2003-01-02 10:11:12 PM %Y-%m-%d %h:%i:%S %p 2003-01-02 22:11:12.000000
2003-01-02 01:11:12.12345AM %Y-%m-%d %h:%i:%S.%f%p 2003-01-02 01:11:12.123450
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 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
2003-01-02 11:11:12Pm %Y-%m-%d %h:%i:%S%p 2003-01-02 23:11:12.000000
10:20:10 %H:%i:%s 0000-00-00 10:20:10.000000
10:20:10 %h:%i:%s.%f 0000-00-00 10:20:10.000000
10:20:10 %T 0000-00-00 10:20:10.000000
10:20:10AM %h:%i:%s%p 0000-00-00 10:20:10.000000
10:20:10AM %r 0000-00-00 10:20:10.000000
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
15 MAY 2001 %d %b %Y 2001-05-15 00:00:00
15th May 2001 %D %b %Y 2001-05-15 00:00:00
Sunday 15 MAY 2001 %W %d %b %Y 2001-05-15 00:00:00
Sund 15 MAY 2001 %W %d %b %Y 2001-05-15 00:00:00
Tuesday 00 2002 %W %U %Y 2002-01-01 00:00:00
Thursday 53 1998 %W %u %Y 1998-12-31 00:00:00
Sunday 01 2001 %W %v %x 2001-01-07 00:00:00
Tuesday 52 2001 %W %V %X 2002-01-01 00:00:00
060 2004 %j %Y 2004-02-29 00:00:00
4 53 1998 %w %u %Y 1998-12-31 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
15-01-2001 12:59:58 %d-%m-%Y %H:%i:%S 2001-01-15 12:59:58.000000
15 September 2001 %d %M %Y 2001-09-15 00:00:00.000000
15 SEPTEMB 2001 %d %M %Y 2001-09-15 00:00:00.000000
15 MAY 2001 %d %b %Y 2001-05-15 00:00:00.000000
15th May 2001 %D %b %Y 2001-05-15 00:00:00.000000
Sunday 15 MAY 2001 %W %d %b %Y 2001-05-15 00:00:00.000000
Sund 15 MAY 2001 %W %d %b %Y 2001-05-15 00:00:00.000000
Tuesday 00 2002 %W %U %Y 2002-01-01 00:00:00.000000
Thursday 53 1998 %W %u %Y 1998-12-31 00:00:00.000000
Sunday 01 2001 %W %v %x 2001-01-07 00:00:00.000000
Tuesday 52 2001 %W %V %X 2002-01-01 00:00:00.000000
060 2004 %j %Y 2004-02-29 00:00:00.000000
4 53 1998 %w %u %Y 1998-12-31 00:00:00.000000
15-01-2001 %d-%m-%Y %H:%i:%S 2001-01-15 00:00:00.000000
15-01-20 %d-%m-%y 2020-01-15 00:00:00.000000
15-2001-1 %d-%Y-%c 2001-01-15 00:00:00.000000
select date,format,cast(str_to_date(date, format) as datetime) as datetime from t1;
date format datetime
2003-01-02 10:11:12 %Y-%m-%d %H:%i:%S 2003-01-02 10:11:12
@ -352,16 +352,16 @@ insert into t1 values
('03-01-02 10:11:12 PM', '%Y-%m-%d %h:%i:%S %p');
select date,format,str_to_date(date, format) as str_to_date from t1;
date format str_to_date
10:20:10AM %h:%i:%s 0000-00-00 10:20:10
2003-01-02 10:11:12 %Y-%m-%d %h:%i:%S 2003-01-02 10:11:12
03-01-02 10:11:12 PM %Y-%m-%d %h:%i:%S %p 2003-01-02 22:11:12
10:20:10AM %h:%i:%s 0000-00-00 10:20:10.000000
2003-01-02 10:11:12 %Y-%m-%d %h:%i:%S 2003-01-02 10:11:12.000000
03-01-02 10:11:12 PM %Y-%m-%d %h:%i:%S %p 2003-01-02 22:11:12.000000
Warnings:
Warning 1292 Truncated incorrect datetime value: '10:20:10AM'
select date,format,concat(str_to_date(date, format),'') as con from t1;
date format con
10:20:10AM %h:%i:%s 0000-00-00 10:20:10
2003-01-02 10:11:12 %Y-%m-%d %h:%i:%S 2003-01-02 10:11:12
03-01-02 10:11:12 PM %Y-%m-%d %h:%i:%S %p 2003-01-02 22:11:12
10:20:10AM %h:%i:%s 0000-00-00 10:20:10.000000
2003-01-02 10:11:12 %Y-%m-%d %h:%i:%S 2003-01-02 10:11:12.000000
03-01-02 10:11:12 PM %Y-%m-%d %h:%i:%S %p 2003-01-02 22:11:12.000000
Warnings:
Warning 1292 Truncated incorrect datetime value: '10:20:10AM'
drop table t1;
@ -418,7 +418,7 @@ drop table t1;
create table t1 select "02 10" as a, "%d %H" as b;
select str_to_date(a,b) from t1;
str_to_date(a,b)
0000-00-02 10:00:00
0000-00-02 10:00:00.000000
create table t2 select str_to_date(a,b) from t1;
describe t2;
Field Type Null Key Default Extra

68
mysql-test/r/func_time.result
View File

@ -1945,6 +1945,74 @@ SELECT 1 FROM DUAL WHERE MINUTE(TIMEDIFF(NULL, '12:12:12'));
SELECT 1 FROM DUAL WHERE SECOND(TIMEDIFF(NULL, '12:12:12'));
1
#
# MDEV-4511 Assertion `scale <= precision' fails on GROUP BY TIMEDIFF with incorrect types
#
CREATE TABLE t1 (a DATE) ENGINE=MyISAM;
INSERT INTO t1 VALUES ('2005-05-04'),('2000-02-23');
SELECT a FROM t1 GROUP BY TIMEDIFF('2004-06-12',a) * 1;
a
2005-05-04
Warnings:
Warning 1292 Truncated incorrect time value: '2004-06-12'
Warning 1292 Truncated incorrect time value: '2004-06-12'
DROP TABLE t1;
CREATE TABLE t1 (a DATE) ENGINE=MyISAM;
INSERT INTO t1 VALUES ('2005-05-04'),('2000-02-23');
SELECT a FROM t1 GROUP BY ADDTIME(a,'10')*1;
a
2000-02-23
2005-05-04
DROP TABLE t1;
CREATE TABLE t1 (a DATE) ENGINE=MyISAM;
INSERT INTO t1 VALUES ('2005-05-04'),('2000-02-23');
SELECT * FROM t1 GROUP BY SEC_TO_TIME(concat(a,'10'))*1;
a
2000-02-23
2005-05-04
DROP TABLE t1;
CREATE TABLE t1 (a DATE) ENGINE=MyISAM;
INSERT INTO t1 VALUES ('2005-05-04'),('2000-02-23');
SELECT * FROM t1 GROUP BY ADDTIME(timestamp('2001-01-01 00:00:00'),CAST(a AS SIGNED)&0xF)*1;
a
2005-05-04
2000-02-23
DROP TABLE t1;
CREATE TABLE t1 (a DATE) ENGINE=MyISAM;
INSERT INTO t1 VALUES ('2005-05-04'),('2000-02-23');
SELECT * FROM t1 GROUP BY STR_TO_DATE(a,concat('%Y-%m-%d.%f',if(rand(),'','')))*1;
a
2000-02-23
2005-05-04
DROP TABLE t1;
CREATE TABLE t1 AS SELECT
STR_TO_DATE('2001-01-01', '%Y-%m-%d') AS date_only,
STR_TO_DATE('10:10:10', '%H:%i:%s') AS time_only,
STR_TO_DATE('10:10:10.123', '%H:%i:%s.%f') AS time_microsecond,
STR_TO_DATE('2001-01-01 10:10:10', '%Y-%m-%d %H:%i:%s') AS date_time,
STR_TO_DATE('2001-01-01 10:10:10.123', '%Y-%m-%d %H:%i:%s.%f') AS date_time_microsecond;
SHOW COLUMNS FROM t1;
Field Type Null Key Default Extra
date_only date YES NULL
time_only time YES NULL
time_microsecond time(6) YES NULL
date_time datetime YES NULL
date_time_microsecond datetime(6) YES NULL
DROP TABLE t1;
CREATE TABLE t1 AS SELECT
SEC_TO_TIME(1)+0.1,
SEC_TO_TIME(1.1)+0.1,
SEC_TO_TIME(1.12)+0.1,
SEC_TO_TIME(1.123456)+0.1,
SEC_TO_TIME(1.1234567)+0.1;
SHOW COLUMNS FROM t1;
Field Type Null Key Default Extra
SEC_TO_TIME(1)+0.1 decimal(12,1) YES NULL
SEC_TO_TIME(1.1)+0.1 decimal(13,1) YES NULL
SEC_TO_TIME(1.12)+0.1 decimal(14,2) YES NULL
SEC_TO_TIME(1.123456)+0.1 decimal(18,6) YES NULL
SEC_TO_TIME(1.1234567)+0.1 decimal(18,6) YES NULL
DROP TABLE t1;
#
# MDEV-4635 Crash in UNIX_TIMESTAMP(STR_TO_DATE('2020','%Y'))
#
SET TIME_ZONE='+02:00';

2
mysql-test/r/type_date.result
View File

@ -161,7 +161,7 @@ INSERT INTO t1 VALUES (1);
INSERT INTO t1 VALUES (NULL);
SELECT str_to_date( '', a ) FROM t1;
str_to_date( '', a )
0000-00-00 00:00:00
0000-00-00 00:00:00.000000
NULL
DROP TABLE t1;
CREATE TABLE t1 (a DATE, b INT, PRIMARY KEY (a,b));

46
mysql-test/t/func_time.test
View File

@ -1190,6 +1190,52 @@ SELECT 1 FROM DUAL WHERE MINUTE(TIMEDIFF(NULL, '12:12:12'));
SELECT 1 FROM DUAL WHERE SECOND(TIMEDIFF(NULL, '12:12:12'));
--echo #
--echo # MDEV-4511 Assertion `scale <= precision' fails on GROUP BY TIMEDIFF with incorrect types
--echo #
CREATE TABLE t1 (a DATE) ENGINE=MyISAM;
INSERT INTO t1 VALUES ('2005-05-04'),('2000-02-23');
SELECT a FROM t1 GROUP BY TIMEDIFF('2004-06-12',a) * 1;
DROP TABLE t1;
CREATE TABLE t1 (a DATE) ENGINE=MyISAM;
INSERT INTO t1 VALUES ('2005-05-04'),('2000-02-23');
SELECT a FROM t1 GROUP BY ADDTIME(a,'10')*1;
DROP TABLE t1;
CREATE TABLE t1 (a DATE) ENGINE=MyISAM;
INSERT INTO t1 VALUES ('2005-05-04'),('2000-02-23');
SELECT * FROM t1 GROUP BY SEC_TO_TIME(concat(a,'10'))*1;
DROP TABLE t1;
CREATE TABLE t1 (a DATE) ENGINE=MyISAM;
INSERT INTO t1 VALUES ('2005-05-04'),('2000-02-23');
SELECT * FROM t1 GROUP BY ADDTIME(timestamp('2001-01-01 00:00:00'),CAST(a AS SIGNED)&0xF)*1;
DROP TABLE t1;
CREATE TABLE t1 (a DATE) ENGINE=MyISAM;
INSERT INTO t1 VALUES ('2005-05-04'),('2000-02-23');
SELECT * FROM t1 GROUP BY STR_TO_DATE(a,concat('%Y-%m-%d.%f',if(rand(),'','')))*1;
DROP TABLE t1;
CREATE TABLE t1 AS SELECT
STR_TO_DATE('2001-01-01', '%Y-%m-%d') AS date_only,
STR_TO_DATE('10:10:10', '%H:%i:%s') AS time_only,
STR_TO_DATE('10:10:10.123', '%H:%i:%s.%f') AS time_microsecond,
STR_TO_DATE('2001-01-01 10:10:10', '%Y-%m-%d %H:%i:%s') AS date_time,
STR_TO_DATE('2001-01-01 10:10:10.123', '%Y-%m-%d %H:%i:%s.%f') AS date_time_microsecond;
SHOW COLUMNS FROM t1;
DROP TABLE t1;
CREATE TABLE t1 AS SELECT
SEC_TO_TIME(1)+0.1,
SEC_TO_TIME(1.1)+0.1,
SEC_TO_TIME(1.12)+0.1,
SEC_TO_TIME(1.123456)+0.1,
SEC_TO_TIME(1.1234567)+0.1;
SHOW COLUMNS FROM t1;
DROP TABLE t1;
--echo #
--echo # MDEV-4635 Crash in UNIX_TIMESTAMP(STR_TO_DATE('2020','%Y'))
--echo #

2
sql/item_timefunc.cc
View File

@ -3144,7 +3144,7 @@ void Item_func_str_to_date::fix_length_and_dec()
}
cached_field_type= MYSQL_TYPE_DATETIME;
decimals= NOT_FIXED_DEC;
decimals= TIME_SECOND_PART_DIGITS;
if ((const_item= args[1]->const_item()))
{
char format_buff[64];

2
sql/item_timefunc.h
View File

@ -809,7 +809,7 @@ public:
bool get_date(MYSQL_TIME *res, ulonglong fuzzy_date);
void fix_length_and_dec()
{
decimals= args[0]->decimals;
decimals= MY_MIN(args[0]->decimals, TIME_SECOND_PART_DIGITS);
Item_timefunc::fix_length_and_dec();
}
const char *func_name() const { return "sec_to_time"; }

2
storage/tokudb/mysql-test/tokudb/r/type_date.result
View File

@ -153,7 +153,7 @@ INSERT INTO t1 VALUES (1);
INSERT INTO t1 VALUES (NULL);
SELECT str_to_date( '', a ) FROM t1;
str_to_date( '', a )
0000-00-00 00:00:00
0000-00-00 00:00:00.000000
NULL
DROP TABLE t1;
CREATE TABLE t1 (a DATE, b int, PRIMARY KEY (a,b));