1
drop table if exists t1,t2;
2
create table t1 (a char(16), b date, c datetime);
3
insert into t1 SET a='test 2000-01-01', b='2000-01-01', c='2000-01-01';
4
select * from t1 where c = '2000-01-01';
6
test 2000-01-01 2000-01-01 2000-01-01 00:00:00
7
select * from t1 where b = '2000-01-01';
9
test 2000-01-01 2000-01-01 2000-01-01 00:00:00
11
CREATE TABLE t1 (name char(6),cdate date);
12
INSERT INTO t1 VALUES ('name1','1998-01-01');
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INSERT INTO t1 VALUES ('name2','1998-01-01');
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INSERT INTO t1 VALUES ('name1','1998-01-02');
15
INSERT INTO t1 VALUES ('name2','1998-01-02');
16
CREATE TABLE t2 (cdate date, note char(6));
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INSERT INTO t2 VALUES ('1998-01-01','note01');
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INSERT INTO t2 VALUES ('1998-01-02','note02');
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select name,t1.cdate,note from t1,t2 where t1.cdate=t2.cdate and t1.cdate='1998-01-01';
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name1 1998-01-01 note01
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name2 1998-01-01 note01
24
CREATE TABLE t1 ( datum DATE );
25
INSERT INTO t1 VALUES ( "2000-1-1" );
26
INSERT INTO t1 VALUES ( "2000-1-2" );
27
INSERT INTO t1 VALUES ( "2000-1-3" );
28
INSERT INTO t1 VALUES ( "2000-1-4" );
29
INSERT INTO t1 VALUES ( "2000-1-5" );
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SELECT * FROM t1 WHERE datum BETWEEN cast("2000-1-2" as date) AND cast("2000-1-4" as date);
35
SELECT * FROM t1 WHERE datum BETWEEN cast("2000-1-2" as date) AND datum - INTERVAL 100 DAY;
43
INSERT INTO t1 VALUES ('aaa',100,'1998-01-01');
44
INSERT INTO t1 VALUES ('aaa',200,'1998-01-03');
45
INSERT INTO t1 VALUES ('bbb',50,'1998-01-02');
46
INSERT INTO t1 VALUES ('bbb',200,'1998-01-04');
47
select max(rdate) as s from t1 where rdate < '1998-01-03' having s> "1998-01-01";
50
select max(rdate) as s from t1 having s="1998-01-04";
53
select max(rdate+0) as s from t1 having s="19980104";
57
create table t1 (date date);
58
insert into t1 values ("2000-08-10"),("2000-08-11");
59
select date_add(date,INTERVAL 1 DAY),date_add(date,INTERVAL 1 SECOND) from t1;
60
date_add(date,INTERVAL 1 DAY) date_add(date,INTERVAL 1 SECOND)
61
2000-08-11 2000-08-10 00:00:01
62
2000-08-12 2000-08-11 00:00:01
64
CREATE TABLE t1(AFIELD INT);
65
INSERT INTO t1 VALUES(1);
66
CREATE TABLE t2(GMT VARCHAR(32));
67
INSERT INTO t2 VALUES('GMT-0800');
68
SELECT DATE_FORMAT("2002-03-06 10:11:12", CONCAT('%a, %d %M %Y %H:%i:%s ' , t2.GMT)) FROM t1, t2 GROUP BY t1.AFIELD;
69
DATE_FORMAT("2002-03-06 10:11:12", CONCAT('%a, %d %M %Y %H:%i:%s ' , t2.GMT))
70
Wed, 06 March 2002 10:11:12 GMT-0800
71
INSERT INTO t1 VALUES(1);
72
SELECT DATE_FORMAT("2002-03-06 10:11:12", CONCAT('%a, %d %M %Y %H:%i:%s ' , t2.GMT)), DATE_FORMAT("2002-03-06 10:11:12", CONCAT('%a, %d %M %Y %H:%i:%s ' , t2.GMT)) FROM t1,t2 GROUP BY t1.AFIELD;
73
DATE_FORMAT("2002-03-06 10:11:12", CONCAT('%a, %d %M %Y %H:%i:%s ' , t2.GMT)) DATE_FORMAT("2002-03-06 10:11:12", CONCAT('%a, %d %M %Y %H:%i:%s ' , t2.GMT))
74
Wed, 06 March 2002 10:11:12 GMT-0800 Wed, 06 March 2002 10:11:12 GMT-0800
76
CREATE TABLE t1 (f1 DATE);
77
CREATE TABLE t2 (f2 VARCHAR(8));
78
CREATE TABLE t3 (f2 CHAR(8));
79
INSERT INTO t1 VALUES ('1978-11-26');
80
INSERT INTO t2 SELECT f1+0 FROM t1;
81
INSERT INTO t2 SELECT f1+0 FROM t1 UNION SELECT f1+0 FROM t1;
82
INSERT INTO t3 SELECT f1+0 FROM t1;
83
INSERT INTO t3 SELECT f1+0 FROM t1 UNION SELECT f1+0 FROM t1;
92
DROP TABLE t1, t2, t3;
93
create table t1(start_date date, end_date date);
94
insert into t1 values ('2000-01-01','2000-01-02');
95
select 1 from t1 where cast('2000-01-01 12:01:01' as datetime) between start_date and end_date;
102
select year(@d), month(@d), day(@d), cast(@d as date);
103
year(@d) month(@d) day(@d) cast(@d as date)
104
2000 11 11 2000-11-11
108
select year(@d), month(@d), day(@d), cast(@d as date);
109
year(@d) month(@d) day(@d) cast(@d as date)
110
2001 11 11 2001-11-11
114
select year(@d), month(@d), day(@d), cast(@d as date);
115
ERROR HY000: Received an invalid datetime value '1311'.
116
create table t1 (d date , dt datetime , ts timestamp);
117
insert into t1 values (9912101,9912101,9912101);
118
ERROR HY000: Received an invalid datetime value '9912101'.
119
insert into t1 values (11111,11111,11111);
122
2001-11-11 2001-11-11 00:00:00 2001-11-11 00:00:00
124
CREATE TABLE t1 (a DATE, b int, PRIMARY KEY (a,b));
125
INSERT INTO t1 VALUES (DATE(NOW()), 1);
126
SELECT COUNT(*) FROM t1 WHERE a = NOW();
129
EXPLAIN SELECT COUNT(*) FROM t1 WHERE a = NOW();
130
id select_type table type possible_keys key key_len ref rows Extra
131
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
132
INSERT INTO t1 VALUES (DATE(NOW()), 2);
133
SELECT COUNT(*) FROM t1 WHERE a = NOW();
136
EXPLAIN SELECT COUNT(*) FROM t1 WHERE a = NOW();
137
id select_type table type possible_keys key key_len ref rows Extra
138
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
139
SELECT COUNT(*) FROM t1 WHERE a = NOW() AND b = 1;
142
EXPLAIN SELECT COUNT(*) FROM t1 WHERE a = NOW() AND b = 1;
143
id select_type table type possible_keys key key_len ref rows Extra
144
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
146
CREATE TABLE t1 SELECT curdate() AS f1;
147
SELECT hour(f1), minute(f1), second(f1) FROM t1;
148
hour(f1) minute(f1) second(f1)