1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
|
# name: test/sql/function/timestamp/test_icu_datetrunc.test
# description: Test the ICU DATETRUNC functions
# group: [timestamp]
require icu
# Normalise the testing locale
statement ok
SET Calendar = 'gregorian';
statement ok
SET TimeZone = 'America/Los_Angeles';
statement ok
CREATE TABLE timestamps(d TIMESTAMPTZ, s VARCHAR);
statement ok
INSERT INTO timestamps VALUES
('-infinity', 'year'),
('1992-02-02 02:02:03.123456-08', 'millennium'),
('1992-02-02 02:02:03.123456-08', 'century'),
('1992-02-02 02:02:03.123456-08', 'decade'),
('1992-02-02 02:02:03.123456-08', 'year'),
('1992-02-02 02:02:03.123456-08', 'quarter'),
('1992-02-02 02:02:03.123456-08', 'month'),
('1992-02-02 02:02:03.123456-08', 'week'),
('1992-02-02 02:02:03.123456-08', 'day'),
('1992-02-02 02:02:03.123456-08', 'hour'),
('1992-02-02 02:02:03.123456-08', 'minute'),
('1992-02-02 02:02:03.123456-08', 'second'),
('1992-02-02 02:02:03.123456-08', 'milliseconds'),
('1992-02-02 02:02:03.123456-08', 'microseconds'),
('infinity', 'month'),
;
# test date_trunc with different combinations of constant/non-constant columns on timestamps
query T
SELECT date_trunc(NULL::VARCHAR, NULL::TIMESTAMPTZ) FROM timestamps LIMIT 3;
----
NULL
NULL
NULL
query T
SELECT date_trunc(s, NULL::TIMESTAMPTZ) FROM timestamps LIMIT 3;
----
NULL
NULL
NULL
query T
SELECT date_trunc(NULL, d) FROM timestamps LIMIT 3;
----
NULL
NULL
NULL
# Timestamps should return timestamp type
query T
SELECT date_trunc('minute', TIMESTAMPTZ '1992-02-02 04:03:02Z') FROM timestamps LIMIT 1;
----
1992-02-01 20:03:00-08
# Test all truncate operators on timestamps
# The use of double for UDate by ICU reduces the representation accuracy far from the epoch.
query II
SELECT date_trunc(s, d), s FROM timestamps;
----
-infinity year
1000-01-01 00:00:00-07:52 millennium
1900-01-01 00:00:00-08 century
1990-01-01 00:00:00-08 decade
1992-01-01 00:00:00-08 year
1992-01-01 00:00:00-08 quarter
1992-02-01 00:00:00-08 month
1992-01-27 00:00:00-08 week
1992-02-02 00:00:00-08 day
1992-02-02 02:00:00-08 hour
1992-02-02 02:02:00-08 minute
1992-02-02 02:02:03-08 second
1992-02-02 02:02:03.123-08 milliseconds
1992-02-02 02:02:03.123456-08 microseconds
infinity month
# Test alias
query II
SELECT datetrunc(s, d), s FROM timestamps;
----
-infinity year
1000-01-01 00:00:00-07:52 millennium
1900-01-01 00:00:00-08 century
1990-01-01 00:00:00-08 decade
1992-01-01 00:00:00-08 year
1992-01-01 00:00:00-08 quarter
1992-02-01 00:00:00-08 month
1992-01-27 00:00:00-08 week
1992-02-02 00:00:00-08 day
1992-02-02 02:00:00-08 hour
1992-02-02 02:02:00-08 minute
1992-02-02 02:02:03-08 second
1992-02-02 02:02:03.123-08 milliseconds
1992-02-02 02:02:03.123456-08 microseconds
infinity month
# Test week operator special cases
query T
SELECT date_trunc('week', TIMESTAMPTZ '2019-01-06 04:03:02-08') FROM timestamps LIMIT 1;
----
2018-12-31 00:00:00-08
query T
SELECT date_trunc('yearweek', TIMESTAMPTZ '2019-01-06 04:03:02-08') FROM timestamps LIMIT 1;
----
2018-12-31 00:00:00-08
query T
SELECT date_trunc('week', TIMESTAMPTZ '2020-01-01 04:03:02-08') FROM timestamps LIMIT 1;
----
2019-12-30 00:00:00-08
query T
SELECT date_trunc('yearweek', TIMESTAMPTZ '2020-01-01 04:03:02-08') FROM timestamps LIMIT 1;
----
2019-12-30 00:00:00-08
# Test quarter operator more thoroughly
query T
SELECT date_trunc('quarter', TIMESTAMPTZ '2020-12-02 04:03:02-08') FROM timestamps LIMIT 1;
----
2020-10-01 00:00:00-07
query T
SELECT date_trunc('quarter', TIMESTAMPTZ '2019-01-06 04:03:02-08') FROM timestamps LIMIT 1;
----
2019-01-01 00:00:00-08
query T
SELECT date_trunc('millennium', TIMESTAMPTZ '1996-01-06 04:03:02-08') FROM timestamps LIMIT 1;
----
1000-01-01 00:00:00-07:52
query T
SELECT date_trunc('century', TIMESTAMPTZ '2019-01-06 04:03:02-08') FROM timestamps LIMIT 1;
----
2000-01-01 00:00:00-08
query T
SELECT date_trunc('decade', TIMESTAMPTZ '2019-01-06 04:03:02-08') FROM timestamps LIMIT 1;
----
2010-01-01 00:00:00-08
query T
SELECT date_trunc('year', TIMESTAMPTZ '2019-01-06 04:03:02-08') FROM timestamps LIMIT 1;
----
2019-01-01 00:00:00-08
query T
SELECT date_trunc('day', TIMESTAMPTZ '2019-01-06 04:03:02-08') FROM timestamps LIMIT 1;
----
2019-01-06 00:00:00-08
query T
SELECT date_trunc('hour', TIMESTAMPTZ '2019-01-06 04:03:02-08') FROM timestamps LIMIT 1;
----
2019-01-06 04:00:00-08
query T
SELECT date_trunc('milliseconds', TIMESTAMPTZ '2019-01-06 04:03:02.123456-08') FROM timestamps LIMIT 1;
----
2019-01-06 04:03:02.123-08
query T
SELECT date_trunc('microseconds', TIMESTAMPTZ '2019-01-06 04:03:02.123456-08');
----
2019-01-06 04:03:02.123456-08
# Synonym for second
query T
SELECT date_trunc('epoch', TIMESTAMPTZ '2019-01-06 04:03:02.5-08') FROM timestamps LIMIT 1;
----
2019-01-06 04:03:02-08
# Synonyms for day
foreach daypart day dow isodow doy julian
query II rowsort
SELECT d, date_trunc('${daypart}', d)
FROM (SELECT DISTINCT d FROM timestamps) tbl(d);
----
-infinity -infinity
1992-02-02 02:02:03.123456-08 1992-02-02 00:00:00-08
infinity infinity
endloop
# ISO Years
query II
SELECT ts, DATE_TRUNC('isoyear', ts::TIMESTAMPTZ)
FROM generate_series('2000-01-01 08:00:00'::TIMESTAMP, '2023-01-01 08:00:00'::TIMESTAMP, INTERVAL 1 YEAR) tbl(ts);
----
2000-01-01 08:00:00 1999-01-04 00:00:00-08
2001-01-01 08:00:00 2001-01-01 00:00:00-08
2002-01-01 08:00:00 2001-12-31 00:00:00-08
2003-01-01 08:00:00 2002-12-30 00:00:00-08
2004-01-01 08:00:00 2003-12-29 00:00:00-08
2005-01-01 08:00:00 2003-12-29 00:00:00-08
2006-01-01 08:00:00 2005-01-03 00:00:00-08
2007-01-01 08:00:00 2007-01-01 00:00:00-08
2008-01-01 08:00:00 2007-12-31 00:00:00-08
2009-01-01 08:00:00 2008-12-29 00:00:00-08
2010-01-01 08:00:00 2008-12-29 00:00:00-08
2011-01-01 08:00:00 2010-01-04 00:00:00-08
2012-01-01 08:00:00 2011-01-03 00:00:00-08
2013-01-01 08:00:00 2012-12-31 00:00:00-08
2014-01-01 08:00:00 2013-12-30 00:00:00-08
2015-01-01 08:00:00 2014-12-29 00:00:00-08
2016-01-01 08:00:00 2014-12-29 00:00:00-08
2017-01-01 08:00:00 2016-01-04 00:00:00-08
2018-01-01 08:00:00 2018-01-01 00:00:00-08
2019-01-01 08:00:00 2018-12-31 00:00:00-08
2020-01-01 08:00:00 2019-12-30 00:00:00-08
2021-01-01 08:00:00 2019-12-30 00:00:00-08
2022-01-01 08:00:00 2021-01-04 00:00:00-08
2023-01-01 08:00:00 2022-01-03 00:00:00-08
# Unknown specifier should fail
statement error
SELECT date_trunc('duck', TIMESTAMPTZ '2019-01-06 04:03:02-08') FROM timestamps LIMIT 1;
----
# Minute truncation within a DST fall back ambiguity
statement ok
set timezone='CET';
query I
select date_trunc('minute', '2022-10-30 02:17:00+02'::TIMESTAMPTZ);
----
2022-10-30 02:17:00+02
# Comparisons to DATE
statement ok
set time zone 'UTC';
query I
select date_trunc('day', '2024-05-06 16:09:28+05:00'::timestamptz) >= '2024-05-06 17:19:18+05:20'::date as r
----
True
|
