summaryrefslogtreecommitdiffstats
path: root/src/test/regress/sql/timestamp.sql
blob: ebc969f36cf6e5f88b2e160b7dc345c478adce58 (plain)
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
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
--
-- TIMESTAMP
--

CREATE TABLE TIMESTAMP_TBL (d1 timestamp(2) without time zone);

-- Test shorthand input values
-- We can't just "select" the results since they aren't constants; test for
-- equality instead.  We can do that by running the test inside a transaction
-- block, within which the value of 'now' shouldn't change, and so these
-- related values shouldn't either.

BEGIN;

INSERT INTO TIMESTAMP_TBL VALUES ('today');
INSERT INTO TIMESTAMP_TBL VALUES ('yesterday');
INSERT INTO TIMESTAMP_TBL VALUES ('tomorrow');
-- time zone should be ignored by this data type
INSERT INTO TIMESTAMP_TBL VALUES ('tomorrow EST');
INSERT INTO TIMESTAMP_TBL VALUES ('tomorrow zulu');

SELECT count(*) AS One FROM TIMESTAMP_TBL WHERE d1 = timestamp without time zone 'today';
SELECT count(*) AS Three FROM TIMESTAMP_TBL WHERE d1 = timestamp without time zone 'tomorrow';
SELECT count(*) AS One FROM TIMESTAMP_TBL WHERE d1 = timestamp without time zone 'yesterday';

COMMIT;

DELETE FROM TIMESTAMP_TBL;

-- Verify that 'now' *does* change over a reasonable interval such as 100 msec,
-- and that it doesn't change over the same interval within a transaction block

INSERT INTO TIMESTAMP_TBL VALUES ('now');
SELECT pg_sleep(0.1);

BEGIN;
INSERT INTO TIMESTAMP_TBL VALUES ('now');
SELECT pg_sleep(0.1);
INSERT INTO TIMESTAMP_TBL VALUES ('now');
SELECT pg_sleep(0.1);
SELECT count(*) AS two FROM TIMESTAMP_TBL WHERE d1 = timestamp(2) without time zone 'now';
SELECT count(d1) AS three, count(DISTINCT d1) AS two FROM TIMESTAMP_TBL;
COMMIT;

TRUNCATE TIMESTAMP_TBL;

-- Special values
INSERT INTO TIMESTAMP_TBL VALUES ('-infinity');
INSERT INTO TIMESTAMP_TBL VALUES ('infinity');
INSERT INTO TIMESTAMP_TBL VALUES ('epoch');

-- Postgres v6.0 standard output format
INSERT INTO TIMESTAMP_TBL VALUES ('Mon Feb 10 17:32:01 1997 PST');

-- Variations on Postgres v6.1 standard output format
INSERT INTO TIMESTAMP_TBL VALUES ('Mon Feb 10 17:32:01.000001 1997 PST');
INSERT INTO TIMESTAMP_TBL VALUES ('Mon Feb 10 17:32:01.999999 1997 PST');
INSERT INTO TIMESTAMP_TBL VALUES ('Mon Feb 10 17:32:01.4 1997 PST');
INSERT INTO TIMESTAMP_TBL VALUES ('Mon Feb 10 17:32:01.5 1997 PST');
INSERT INTO TIMESTAMP_TBL VALUES ('Mon Feb 10 17:32:01.6 1997 PST');

-- ISO 8601 format
INSERT INTO TIMESTAMP_TBL VALUES ('1997-01-02');
INSERT INTO TIMESTAMP_TBL VALUES ('1997-01-02 03:04:05');
INSERT INTO TIMESTAMP_TBL VALUES ('1997-02-10 17:32:01-08');
INSERT INTO TIMESTAMP_TBL VALUES ('1997-02-10 17:32:01-0800');
INSERT INTO TIMESTAMP_TBL VALUES ('1997-02-10 17:32:01 -08:00');
INSERT INTO TIMESTAMP_TBL VALUES ('19970210 173201 -0800');
INSERT INTO TIMESTAMP_TBL VALUES ('1997-06-10 17:32:01 -07:00');
INSERT INTO TIMESTAMP_TBL VALUES ('2001-09-22T18:19:20');

-- POSIX format (note that the timezone abbrev is just decoration here)
INSERT INTO TIMESTAMP_TBL VALUES ('2000-03-15 08:14:01 GMT+8');
INSERT INTO TIMESTAMP_TBL VALUES ('2000-03-15 13:14:02 GMT-1');
INSERT INTO TIMESTAMP_TBL VALUES ('2000-03-15 12:14:03 GMT-2');
INSERT INTO TIMESTAMP_TBL VALUES ('2000-03-15 03:14:04 PST+8');
INSERT INTO TIMESTAMP_TBL VALUES ('2000-03-15 02:14:05 MST+7:00');

-- Variations for acceptable input formats
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 10 17:32:01 1997 -0800');
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 10 17:32:01 1997');
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 10 5:32PM 1997');
INSERT INTO TIMESTAMP_TBL VALUES ('1997/02/10 17:32:01-0800');
INSERT INTO TIMESTAMP_TBL VALUES ('1997-02-10 17:32:01 PST');
INSERT INTO TIMESTAMP_TBL VALUES ('Feb-10-1997 17:32:01 PST');
INSERT INTO TIMESTAMP_TBL VALUES ('02-10-1997 17:32:01 PST');
INSERT INTO TIMESTAMP_TBL VALUES ('19970210 173201 PST');
set datestyle to ymd;
INSERT INTO TIMESTAMP_TBL VALUES ('97FEB10 5:32:01PM UTC');
INSERT INTO TIMESTAMP_TBL VALUES ('97/02/10 17:32:01 UTC');
reset datestyle;
INSERT INTO TIMESTAMP_TBL VALUES ('1997.041 17:32:01 UTC');
INSERT INTO TIMESTAMP_TBL VALUES ('19970210 173201 America/New_York');
-- this fails (even though TZ is a no-op, we still look it up)
INSERT INTO TIMESTAMP_TBL VALUES ('19970710 173201 America/Does_not_exist');

-- Check date conversion and date arithmetic
INSERT INTO TIMESTAMP_TBL VALUES ('1997-06-10 18:32:01 PDT');

INSERT INTO TIMESTAMP_TBL VALUES ('Feb 10 17:32:01 1997');
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 11 17:32:01 1997');
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 12 17:32:01 1997');
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 13 17:32:01 1997');
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 14 17:32:01 1997');
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 15 17:32:01 1997');
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 16 17:32:01 1997');

INSERT INTO TIMESTAMP_TBL VALUES ('Feb 16 17:32:01 0097 BC');
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 16 17:32:01 0097');
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 16 17:32:01 0597');
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 16 17:32:01 1097');
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 16 17:32:01 1697');
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 16 17:32:01 1797');
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 16 17:32:01 1897');
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 16 17:32:01 1997');
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 16 17:32:01 2097');

INSERT INTO TIMESTAMP_TBL VALUES ('Feb 28 17:32:01 1996');
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 29 17:32:01 1996');
INSERT INTO TIMESTAMP_TBL VALUES ('Mar 01 17:32:01 1996');
INSERT INTO TIMESTAMP_TBL VALUES ('Dec 30 17:32:01 1996');
INSERT INTO TIMESTAMP_TBL VALUES ('Dec 31 17:32:01 1996');
INSERT INTO TIMESTAMP_TBL VALUES ('Jan 01 17:32:01 1997');
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 28 17:32:01 1997');
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 29 17:32:01 1997');
INSERT INTO TIMESTAMP_TBL VALUES ('Mar 01 17:32:01 1997');
INSERT INTO TIMESTAMP_TBL VALUES ('Dec 30 17:32:01 1997');
INSERT INTO TIMESTAMP_TBL VALUES ('Dec 31 17:32:01 1997');
INSERT INTO TIMESTAMP_TBL VALUES ('Dec 31 17:32:01 1999');
INSERT INTO TIMESTAMP_TBL VALUES ('Jan 01 17:32:01 2000');
INSERT INTO TIMESTAMP_TBL VALUES ('Dec 31 17:32:01 2000');
INSERT INTO TIMESTAMP_TBL VALUES ('Jan 01 17:32:01 2001');

-- Currently unsupported syntax and ranges
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 16 17:32:01 -0097');
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 16 17:32:01 5097 BC');

SELECT d1 FROM TIMESTAMP_TBL;

-- Check behavior at the boundaries of the timestamp range
SELECT '4714-11-24 00:00:00 BC'::timestamp;
SELECT '4714-11-23 23:59:59 BC'::timestamp;  -- out of range
SELECT '294276-12-31 23:59:59'::timestamp;
SELECT '294277-01-01 00:00:00'::timestamp;  -- out of range

-- Demonstrate functions and operators
SELECT d1 FROM TIMESTAMP_TBL
   WHERE d1 > timestamp without time zone '1997-01-02';

SELECT d1 FROM TIMESTAMP_TBL
   WHERE d1 < timestamp without time zone '1997-01-02';

SELECT d1 FROM TIMESTAMP_TBL
   WHERE d1 = timestamp without time zone '1997-01-02';

SELECT d1 FROM TIMESTAMP_TBL
   WHERE d1 != timestamp without time zone '1997-01-02';

SELECT d1 FROM TIMESTAMP_TBL
   WHERE d1 <= timestamp without time zone '1997-01-02';

SELECT d1 FROM TIMESTAMP_TBL
   WHERE d1 >= timestamp without time zone '1997-01-02';

SELECT d1 - timestamp without time zone '1997-01-02' AS diff
   FROM TIMESTAMP_TBL WHERE d1 BETWEEN '1902-01-01' AND '2038-01-01';

SELECT date_trunc( 'week', timestamp '2004-02-29 15:44:17.71393' ) AS week_trunc;

-- verify date_bin behaves the same as date_trunc for relevant intervals

-- case 1: AD dates, origin < input
SELECT
  str,
  interval,
  date_trunc(str, ts) = date_bin(interval::interval, ts, timestamp '2001-01-01') AS equal
FROM (
  VALUES
  ('week', '7 d'),
  ('day', '1 d'),
  ('hour', '1 h'),
  ('minute', '1 m'),
  ('second', '1 s'),
  ('millisecond', '1 ms'),
  ('microsecond', '1 us')
) intervals (str, interval),
(VALUES (timestamp '2020-02-29 15:44:17.71393')) ts (ts);

-- case 2: BC dates, origin < input
SELECT
  str,
  interval,
  date_trunc(str, ts) = date_bin(interval::interval, ts, timestamp '2000-01-01 BC') AS equal
FROM (
  VALUES
  ('week', '7 d'),
  ('day', '1 d'),
  ('hour', '1 h'),
  ('minute', '1 m'),
  ('second', '1 s'),
  ('millisecond', '1 ms'),
  ('microsecond', '1 us')
) intervals (str, interval),
(VALUES (timestamp '0055-6-10 15:44:17.71393 BC')) ts (ts);

-- case 3: AD dates, origin > input
SELECT
  str,
  interval,
  date_trunc(str, ts) = date_bin(interval::interval, ts, timestamp '2020-03-02') AS equal
FROM (
  VALUES
  ('week', '7 d'),
  ('day', '1 d'),
  ('hour', '1 h'),
  ('minute', '1 m'),
  ('second', '1 s'),
  ('millisecond', '1 ms'),
  ('microsecond', '1 us')
) intervals (str, interval),
(VALUES (timestamp '2020-02-29 15:44:17.71393')) ts (ts);

-- case 4: BC dates, origin > input
SELECT
  str,
  interval,
  date_trunc(str, ts) = date_bin(interval::interval, ts, timestamp '0055-06-17 BC') AS equal
FROM (
  VALUES
  ('week', '7 d'),
  ('day', '1 d'),
  ('hour', '1 h'),
  ('minute', '1 m'),
  ('second', '1 s'),
  ('millisecond', '1 ms'),
  ('microsecond', '1 us')
) intervals (str, interval),
(VALUES (timestamp '0055-6-10 15:44:17.71393 BC')) ts (ts);

-- bin timestamps into arbitrary intervals
SELECT
  interval,
  ts,
  origin,
  date_bin(interval::interval, ts, origin)
FROM (
  VALUES
  ('15 days'),
  ('2 hours'),
  ('1 hour 30 minutes'),
  ('15 minutes'),
  ('10 seconds'),
  ('100 milliseconds'),
  ('250 microseconds')
) intervals (interval),
(VALUES (timestamp '2020-02-11 15:44:17.71393')) ts (ts),
(VALUES (timestamp '2001-01-01')) origin (origin);

-- shift bins using the origin parameter:
SELECT date_bin('5 min'::interval, timestamp '2020-02-01 01:01:01', timestamp '2020-02-01 00:02:30');

-- disallow intervals with months or years
SELECT date_bin('5 months'::interval, timestamp '2020-02-01 01:01:01', timestamp '2001-01-01');
SELECT date_bin('5 years'::interval,  timestamp '2020-02-01 01:01:01', timestamp '2001-01-01');

-- disallow zero intervals
SELECT date_bin('0 days'::interval, timestamp '1970-01-01 01:00:00' , timestamp '1970-01-01 00:00:00');

-- disallow negative intervals
SELECT date_bin('-2 days'::interval, timestamp '1970-01-01 01:00:00' , timestamp '1970-01-01 00:00:00');

-- Test casting within a BETWEEN qualifier
SELECT d1 - timestamp without time zone '1997-01-02' AS diff
  FROM TIMESTAMP_TBL
  WHERE d1 BETWEEN timestamp without time zone '1902-01-01'
   AND timestamp without time zone '2038-01-01';

-- DATE_PART (timestamp_part)
SELECT d1 as "timestamp",
   date_part( 'year', d1) AS year, date_part( 'month', d1) AS month,
   date_part( 'day', d1) AS day, date_part( 'hour', d1) AS hour,
   date_part( 'minute', d1) AS minute, date_part( 'second', d1) AS second
   FROM TIMESTAMP_TBL;

SELECT d1 as "timestamp",
   date_part( 'quarter', d1) AS quarter, date_part( 'msec', d1) AS msec,
   date_part( 'usec', d1) AS usec
   FROM TIMESTAMP_TBL;

SELECT d1 as "timestamp",
   date_part( 'isoyear', d1) AS isoyear, date_part( 'week', d1) AS week,
   date_part( 'isodow', d1) AS isodow, date_part( 'dow', d1) AS dow,
   date_part( 'doy', d1) AS doy
   FROM TIMESTAMP_TBL;

SELECT d1 as "timestamp",
   date_part( 'decade', d1) AS decade,
   date_part( 'century', d1) AS century,
   date_part( 'millennium', d1) AS millennium,
   round(date_part( 'julian', d1)) AS julian,
   date_part( 'epoch', d1) AS epoch
   FROM TIMESTAMP_TBL;

-- extract implementation is mostly the same as date_part, so only
-- test a few cases for additional coverage.
SELECT d1 as "timestamp",
   extract(microseconds from d1) AS microseconds,
   extract(milliseconds from d1) AS milliseconds,
   extract(seconds from d1) AS seconds,
   round(extract(julian from d1)) AS julian,
   extract(epoch from d1) AS epoch
   FROM TIMESTAMP_TBL;

-- value near upper bound uses special case in code
SELECT date_part('epoch', '294270-01-01 00:00:00'::timestamp);
SELECT extract(epoch from '294270-01-01 00:00:00'::timestamp);
-- another internal overflow test case
SELECT extract(epoch from '5000-01-01 00:00:00'::timestamp);

-- TO_CHAR()
SELECT to_char(d1, 'DAY Day day DY Dy dy MONTH Month month RM MON Mon mon')
   FROM TIMESTAMP_TBL;

SELECT to_char(d1, 'FMDAY FMDay FMday FMMONTH FMMonth FMmonth FMRM')
   FROM TIMESTAMP_TBL;

SELECT to_char(d1, 'Y,YYY YYYY YYY YY Y CC Q MM WW DDD DD D J')
   FROM TIMESTAMP_TBL;

SELECT to_char(d1, 'FMY,YYY FMYYYY FMYYY FMYY FMY FMCC FMQ FMMM FMWW FMDDD FMDD FMD FMJ')
   FROM TIMESTAMP_TBL;

SELECT to_char(d1, 'HH HH12 HH24 MI SS SSSS')
   FROM TIMESTAMP_TBL;

SELECT to_char(d1, E'"HH:MI:SS is" HH:MI:SS "\\"text between quote marks\\""')
   FROM TIMESTAMP_TBL;

SELECT to_char(d1, 'HH24--text--MI--text--SS')
   FROM TIMESTAMP_TBL;

SELECT to_char(d1, 'YYYYTH YYYYth Jth')
   FROM TIMESTAMP_TBL;

SELECT to_char(d1, 'YYYY A.D. YYYY a.d. YYYY bc HH:MI:SS P.M. HH:MI:SS p.m. HH:MI:SS pm')
   FROM TIMESTAMP_TBL;

SELECT to_char(d1, 'IYYY IYY IY I IW IDDD ID')
   FROM TIMESTAMP_TBL;

SELECT to_char(d1, 'FMIYYY FMIYY FMIY FMI FMIW FMIDDD FMID')
   FROM TIMESTAMP_TBL;

SELECT to_char(d, 'FF1 FF2 FF3 FF4 FF5 FF6  ff1 ff2 ff3 ff4 ff5 ff6  MS US')
   FROM (VALUES
       ('2018-11-02 12:34:56'::timestamp),
       ('2018-11-02 12:34:56.78'),
       ('2018-11-02 12:34:56.78901'),
       ('2018-11-02 12:34:56.78901234')
   ) d(d);

-- Roman months, with upper and lower case.
SELECT i,
       to_char(i * interval '1mon', 'rm'),
       to_char(i * interval '1mon', 'RM')
    FROM generate_series(-13, 13) i;

-- timestamp numeric fields constructor
SELECT make_timestamp(2014, 12, 28, 6, 30, 45.887);
SELECT make_timestamp(-44, 3, 15, 12, 30, 15);
-- should fail
select make_timestamp(0, 7, 15, 12, 30, 15);

-- generate_series for timestamp
select * from generate_series('2020-01-01 00:00'::timestamp,
                              '2020-01-02 03:00'::timestamp,
                              '1 hour'::interval);
-- the LIMIT should allow this to terminate in a reasonable amount of time
-- (but that unfortunately doesn't work yet for SELECT * FROM ...)
select generate_series('2022-01-01 00:00'::timestamp,
                       'infinity'::timestamp,
                       '1 month'::interval) limit 10;
-- errors
select * from generate_series('2020-01-01 00:00'::timestamp,
                              '2020-01-02 03:00'::timestamp,
                              '0 hour'::interval);