1
drop table if exists t1, test;
2
select extract(DAY_MICROSECOND FROM "1999-01-02 10:11:12.000123");
3
extract(DAY_MICROSECOND FROM "1999-01-02 10:11:12.000123")
5
select extract(HOUR_MICROSECOND FROM "1999-01-02 10:11:12.000123");
6
extract(HOUR_MICROSECOND FROM "1999-01-02 10:11:12.000123")
8
select extract(MINUTE_MICROSECOND FROM "1999-01-02 10:11:12.000123");
9
extract(MINUTE_MICROSECOND FROM "1999-01-02 10:11:12.000123")
11
select extract(SECOND_MICROSECOND FROM "1999-01-02 10:11:12.000123");
12
extract(SECOND_MICROSECOND FROM "1999-01-02 10:11:12.000123")
14
select extract(MICROSECOND FROM "1999-01-02 10:11:12.000123");
15
extract(MICROSECOND FROM "1999-01-02 10:11:12.000123")
17
select date_format("1997-12-31 23:59:59.000002", "%f");
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date_format("1997-12-31 23:59:59.000002", "%f")
20
select date_add("1997-12-31 23:59:59.000002",INTERVAL "10000 99:99:99.999999" DAY_MICROSECOND);
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date_add("1997-12-31 23:59:59.000002",INTERVAL "10000 99:99:99.999999" DAY_MICROSECOND)
22
2025-05-23 04:40:39.000001
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select date_add("1997-12-31 23:59:59.000002",INTERVAL "10000:99:99.999999" HOUR_MICROSECOND);
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date_add("1997-12-31 23:59:59.000002",INTERVAL "10000:99:99.999999" HOUR_MICROSECOND)
25
1999-02-21 17:40:39.000001
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select date_add("1997-12-31 23:59:59.000002",INTERVAL "10000:99.999999" MINUTE_MICROSECOND);
27
date_add("1997-12-31 23:59:59.000002",INTERVAL "10000:99.999999" MINUTE_MICROSECOND)
28
1998-01-07 22:41:39.000001
29
select date_add("1997-12-31 23:59:59.000002",INTERVAL "10000.999999" SECOND_MICROSECOND);
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date_add("1997-12-31 23:59:59.000002",INTERVAL "10000.999999" SECOND_MICROSECOND)
31
1998-01-01 02:46:40.000001
32
select date_add("1997-12-31 23:59:59.000002",INTERVAL "999999" MICROSECOND);
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date_add("1997-12-31 23:59:59.000002",INTERVAL "999999" MICROSECOND)
34
1998-01-01 00:00:00.000001
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select date_sub("1998-01-01 00:00:00.000001",INTERVAL "1 1:1:1.000002" DAY_MICROSECOND);
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date_sub("1998-01-01 00:00:00.000001",INTERVAL "1 1:1:1.000002" DAY_MICROSECOND)
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1997-12-30 22:58:58.999999
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select date_sub("1998-01-01 00:00:00.000001",INTERVAL "1:1:1.000002" HOUR_MICROSECOND);
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date_sub("1998-01-01 00:00:00.000001",INTERVAL "1:1:1.000002" HOUR_MICROSECOND)
40
1997-12-31 22:58:58.999999
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select date_sub("1998-01-01 00:00:00.000001",INTERVAL "1:1.000002" MINUTE_MICROSECOND);
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date_sub("1998-01-01 00:00:00.000001",INTERVAL "1:1.000002" MINUTE_MICROSECOND)
43
1997-12-31 23:58:58.999999
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select date_sub("1998-01-01 00:00:00.000001",INTERVAL "1.000002" SECOND_MICROSECOND);
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date_sub("1998-01-01 00:00:00.000001",INTERVAL "1.000002" SECOND_MICROSECOND)
46
1997-12-31 23:59:58.999999
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select date_sub("1998-01-01 00:00:00.000001",INTERVAL "000002" MICROSECOND);
48
date_sub("1998-01-01 00:00:00.000001",INTERVAL "000002" MICROSECOND)
49
1997-12-31 23:59:59.999999
50
select adddate("1997-12-31 23:59:59.000001", 10);
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adddate("1997-12-31 23:59:59.000001", 10)
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1998-01-10 23:59:59.000001
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select subdate("1997-12-31 23:59:59.000001", 10);
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subdate("1997-12-31 23:59:59.000001", 10)
55
1997-12-21 23:59:59.000001
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select datediff("1997-12-31 23:59:59.000001","1997-12-30");
57
datediff("1997-12-31 23:59:59.000001","1997-12-30")
59
select datediff("1997-11-30 23:59:59.000001","1997-12-31");
60
datediff("1997-11-30 23:59:59.000001","1997-12-31")
62
select datediff("1997-11-31 23:59:59.000001","1997-12-31");
63
ERROR HY000: Received an invalid datetime value '1997-11-31 23:59:59.000001'.
64
select datediff("1997-11-30 23:59:59.000001",null);
65
datediff("1997-11-30 23:59:59.000001",null)
67
select makedate(03,1);
70
select makedate('0003',1);
73
select makedate(1997,1);
76
select makedate(1997,0);
79
select makedate(9999,365);
82
select makedate(9999,366);
85
select makedate(100,1);
88
select timestamp("2001-12-01 01:01:01.000100");
89
timestamp("2001-12-01 01:01:01.000100")
90
2001-12-01 01:01:01.000100
91
select timestamp("2001-12-01");
92
timestamp("2001-12-01")
94
select day("1997-12-31 23:59:59.000001");
95
day("1997-12-31 23:59:59.000001")
97
select date("1997-12-31 23:59:59.000001");
98
date("1997-12-31 23:59:59.000001")
100
select date("1997-13-31 23:59:59.000001");
101
date("1997-13-31 23:59:59.000001")
104
Warning 1292 Incorrect datetime value: '1997-13-31 23:59:59.000001'
105
select microsecond("1997-12-31 23:59:59.000001");
106
microsecond("1997-12-31 23:59:59.000001")
109
select makedate(1997,1) as f1,
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date("1997-12-31 23:59:59.000001") as f8;
112
Field Type Null Default Default_is_NULL On_Update
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1997-01-01 1997-12-31
118
create table test(t1 datetime, t4 datetime);
119
insert into test values
120
('2001-01-01 01:01:01', '2001-02-01 01:01:01'),
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('2001-01-01 01:01:01', "1997-12-31 23:59:59.000001"),
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('1997-12-31 23:59:59.000001', '2001-01-01 01:01:01'),
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('2001-01-01 01:01:01', null),
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('2001-01-01 01:01:01', '2001-01-01 01:01:01'),
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('2001-01-01 01:01:01', null),
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('2001-01-01 01:01:01', '2001-01-01 01:01:01');
129
select microsecond("1997-12-31 23:59:59.01") as a;
132
select microsecond(19971231235959.01) as a;
135
select date_add("1997-12-31",INTERVAL "10.09" SECOND_MICROSECOND) as a;
137
1997-12-31 00:00:10.090000