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Add more tests for EXTRACT of date type

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EXTRACT of date type is implemented as a wrapper around EXTRACT of
timestamp, so the code is already tested there.  But the externally
visible behavior of EXTRACT on date is not recorded anywhere.  Since
there is some discussion about reimplementing or refactoring some of
this, add some more explicit tests of EXTRACT on date, similar in
structure to existing EXTRACT tests on other data types.

Discussion: https://www.postgresql.org/message-id/flat/42b73d2d-da12-ba9f-570a-420e0cce19d9@phystech.edu
pull/57/head
Peter Eisentraut 5 years ago
parent 994a58407c
commit 540612fa46
3 changed files with 228 additions and 17 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 192
      src/test/regress/expected/date.out
  2. 4
      src/test/regress/expected/expressions.out
  3. 49
      src/test/regress/sql/date.sql

192
src/test/regress/expected/date.out
Unescape View File

@ -21,9 +21,10 @@ INSERT INTO DATE_TBL VALUES ('2000-04-03');
INSERT INTO DATE_TBL VALUES ('2038-04-08');
INSERT INTO DATE_TBL VALUES ('2039-04-09');
INSERT INTO DATE_TBL VALUES ('2040-04-10');
SELECT f1 AS "Fifteen" FROM DATE_TBL;
Fifteen
------------
INSERT INTO DATE_TBL VALUES ('2040-04-10 BC');
SELECT f1 FROM DATE_TBL;
f1
---------------
04-09-1957
06-13-1957
02-28-1996
@ -39,11 +40,12 @@ SELECT f1 AS "Fifteen" FROM DATE_TBL;
04-08-2038
04-09-2039
04-10-2040
(15 rows)
04-10-2040 BC
(16 rows)
SELECT f1 AS "Nine" FROM DATE_TBL WHERE f1 < '2000-01-01';
Nine
------------
SELECT f1 FROM DATE_TBL WHERE f1 < '2000-01-01';
f1
---------------
04-09-1957
06-13-1957
02-28-1996
@ -53,11 +55,12 @@ SELECT f1 AS "Nine" FROM DATE_TBL WHERE f1 < '2000-01-01';
02-28-1997
03-01-1997
03-02-1997
(9 rows)
04-10-2040 BC
(10 rows)
SELECT f1 AS "Three" FROM DATE_TBL
SELECT f1 FROM DATE_TBL
WHERE f1 BETWEEN '2000-01-01' AND '2001-01-01';
Three
f1
------------
04-01-2000
04-02-2000
@ -860,7 +863,8 @@ SELECT f1 - date '2000-01-01' AS "Days From 2K" FROM DATE_TBL;
13977
14343
14710
(15 rows)
-1475115
(16 rows)
SELECT f1 - date 'epoch' AS "Days From Epoch" FROM DATE_TBL;
Days From Epoch
@ -880,7 +884,8 @@ SELECT f1 - date 'epoch' AS "Days From Epoch" FROM DATE_TBL;
24934
25300
25667
(15 rows)
-1464158
(16 rows)
SELECT date 'yesterday' - date 'today' AS "One day";
One day
@ -920,6 +925,43 @@ SELECT date 'tomorrow' - date 'yesterday' AS "Two days";
--
-- test extract!
--
SELECT f1 as "date",
date_part('year', f1) AS year,
date_part('month', f1) AS month,
date_part('day', f1) AS day,
date_part('quarter', f1) AS quarter,
date_part('decade', f1) AS decade,
date_part('century', f1) AS century,
date_part('millennium', f1) AS millennium,
date_part('isoyear', f1) AS isoyear,
date_part('week', f1) AS week,
date_part('dow', f1) AS dow,
date_part('isodow', f1) AS isodow,
date_part('doy', f1) AS doy,
date_part('julian', f1) AS julian,
date_part('epoch', f1) AS epoch
FROM date_tbl;
date | year | month | day | quarter | decade | century | millennium | isoyear | week | dow | isodow | doy | julian | epoch
---------------+-------+-------+-----+---------+--------+---------+------------+---------+------+-----+--------+-----+---------+---------------
04-09-1957 | 1957 | 4 | 9 | 2 | 195 | 20 | 2 | 1957 | 15 | 2 | 2 | 99 | 2435938 | -401760000
06-13-1957 | 1957 | 6 | 13 | 2 | 195 | 20 | 2 | 1957 | 24 | 4 | 4 | 164 | 2436003 | -396144000
02-28-1996 | 1996 | 2 | 28 | 1 | 199 | 20 | 2 | 1996 | 9 | 3 | 3 | 59 | 2450142 | 825465600
02-29-1996 | 1996 | 2 | 29 | 1 | 199 | 20 | 2 | 1996 | 9 | 4 | 4 | 60 | 2450143 | 825552000
03-01-1996 | 1996 | 3 | 1 | 1 | 199 | 20 | 2 | 1996 | 9 | 5 | 5 | 61 | 2450144 | 825638400
03-02-1996 | 1996 | 3 | 2 | 1 | 199 | 20 | 2 | 1996 | 9 | 6 | 6 | 62 | 2450145 | 825724800
02-28-1997 | 1997 | 2 | 28 | 1 | 199 | 20 | 2 | 1997 | 9 | 5 | 5 | 59 | 2450508 | 857088000
03-01-1997 | 1997 | 3 | 1 | 1 | 199 | 20 | 2 | 1997 | 9 | 6 | 6 | 60 | 2450509 | 857174400
03-02-1997 | 1997 | 3 | 2 | 1 | 199 | 20 | 2 | 1997 | 9 | 0 | 7 | 61 | 2450510 | 857260800
04-01-2000 | 2000 | 4 | 1 | 2 | 200 | 20 | 2 | 2000 | 13 | 6 | 6 | 92 | 2451636 | 954547200
04-02-2000 | 2000 | 4 | 2 | 2 | 200 | 20 | 2 | 2000 | 13 | 0 | 7 | 93 | 2451637 | 954633600
04-03-2000 | 2000 | 4 | 3 | 2 | 200 | 20 | 2 | 2000 | 14 | 1 | 1 | 94 | 2451638 | 954720000
04-08-2038 | 2038 | 4 | 8 | 2 | 203 | 21 | 3 | 2038 | 14 | 4 | 4 | 98 | 2465522 | 2154297600
04-09-2039 | 2039 | 4 | 9 | 2 | 203 | 21 | 3 | 2039 | 14 | 6 | 6 | 99 | 2465888 | 2185920000
04-10-2040 | 2040 | 4 | 10 | 2 | 204 | 21 | 3 | 2040 | 15 | 2 | 2 | 101 | 2466255 | 2217628800
04-10-2040 BC | -2040 | 4 | 10 | 2 | -204 | -21 | -3 | -2040 | 15 | 1 | 1 | 100 | 976430 | -126503251200
(16 rows)
--
-- epoch
--
@ -1111,6 +1153,132 @@ SELECT EXTRACT(CENTURY FROM TIMESTAMP '1970-03-20 04:30:00.00000'); -- 20
20
(1 row)
--
-- all possible fields
--
SELECT EXTRACT(MICROSECONDS FROM DATE '2020-08-11');
date_part
-----------
0
(1 row)
SELECT EXTRACT(MILLISECONDS FROM DATE '2020-08-11');
date_part
-----------
0
(1 row)
SELECT EXTRACT(SECOND FROM DATE '2020-08-11');
date_part
-----------
0
(1 row)
SELECT EXTRACT(MINUTE FROM DATE '2020-08-11');
date_part
-----------
0
(1 row)
SELECT EXTRACT(HOUR FROM DATE '2020-08-11');
date_part
-----------
0
(1 row)
SELECT EXTRACT(DAY FROM DATE '2020-08-11');
date_part
-----------
11
(1 row)
SELECT EXTRACT(MONTH FROM DATE '2020-08-11');
date_part
-----------
8
(1 row)
SELECT EXTRACT(YEAR FROM DATE '2020-08-11');
date_part
-----------
2020
(1 row)
SELECT EXTRACT(DECADE FROM DATE '2020-08-11');
date_part
-----------
202
(1 row)
SELECT EXTRACT(CENTURY FROM DATE '2020-08-11');
date_part
-----------
21
(1 row)
SELECT EXTRACT(MILLENNIUM FROM DATE '2020-08-11');
date_part
-----------
3
(1 row)
SELECT EXTRACT(ISOYEAR FROM DATE '2020-08-11');
date_part
-----------
2020
(1 row)
SELECT EXTRACT(QUARTER FROM DATE '2020-08-11');
date_part
-----------
3
(1 row)
SELECT EXTRACT(WEEK FROM DATE '2020-08-11');
date_part
-----------
33
(1 row)
SELECT EXTRACT(DOW FROM DATE '2020-08-11');
date_part
-----------
2
(1 row)
SELECT EXTRACT(ISODOW FROM DATE '2020-08-11');
date_part
-----------
2
(1 row)
SELECT EXTRACT(DOY FROM DATE '2020-08-11');
date_part
-----------
224
(1 row)
SELECT EXTRACT(TIMEZONE FROM DATE '2020-08-11');
ERROR: timestamp units "timezone" not supported
CONTEXT: SQL function "date_part" statement 1
SELECT EXTRACT(TIMEZONE_M FROM DATE '2020-08-11');
ERROR: timestamp units "timezone_m" not supported
CONTEXT: SQL function "date_part" statement 1
SELECT EXTRACT(TIMEZONE_H FROM DATE '2020-08-11');
ERROR: timestamp units "timezone_h" not supported
CONTEXT: SQL function "date_part" statement 1
SELECT EXTRACT(EPOCH FROM DATE '2020-08-11');
date_part
------------
1597104000
(1 row)
SELECT EXTRACT(JULIAN FROM DATE '2020-08-11');
date_part
-----------
2459073
(1 row)
--
-- test trunc function!
--

4
src/test/regress/expected/expressions.out
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@ -121,7 +121,7 @@ select count(*) from date_tbl
where f1 not between '1997-01-01' and '1998-01-01';
count
-------
12
13
(1 row)
explain (costs off)
@ -155,6 +155,6 @@ select count(*) from date_tbl
where f1 not between symmetric '1997-01-01' and '1998-01-01';
count
-------
12
13
(1 row)

49
src/test/regress/sql/date.sql
Unescape View File

@ -20,12 +20,13 @@ INSERT INTO DATE_TBL VALUES ('2000-04-03');
INSERT INTO DATE_TBL VALUES ('2038-04-08');
INSERT INTO DATE_TBL VALUES ('2039-04-09');
INSERT INTO DATE_TBL VALUES ('2040-04-10');
INSERT INTO DATE_TBL VALUES ('2040-04-10 BC');
SELECT f1 AS "Fifteen" FROM DATE_TBL;
SELECT f1 FROM DATE_TBL;
SELECT f1 AS "Nine" FROM DATE_TBL WHERE f1 < '2000-01-01';
SELECT f1 FROM DATE_TBL WHERE f1 < '2000-01-01';
SELECT f1 AS "Three" FROM DATE_TBL
SELECT f1 FROM DATE_TBL
WHERE f1 BETWEEN '2000-01-01' AND '2001-01-01';
--
@ -218,6 +219,23 @@ SELECT date 'tomorrow' - date 'yesterday' AS "Two days";
--
-- test extract!
--
SELECT f1 as "date",
date_part('year', f1) AS year,
date_part('month', f1) AS month,
date_part('day', f1) AS day,
date_part('quarter', f1) AS quarter,
date_part('decade', f1) AS decade,
date_part('century', f1) AS century,
date_part('millennium', f1) AS millennium,
date_part('isoyear', f1) AS isoyear,
date_part('week', f1) AS week,
date_part('dow', f1) AS dow,
date_part('isodow', f1) AS isodow,
date_part('doy', f1) AS doy,
date_part('julian', f1) AS julian,
date_part('epoch', f1) AS epoch
FROM date_tbl;
--
-- epoch
--
SELECT EXTRACT(EPOCH FROM DATE '1970-01-01'); -- 0
@ -264,6 +282,31 @@ SELECT EXTRACT(DECADE FROM DATE '0012-12-31 BC'); -- -2
SELECT EXTRACT(CENTURY FROM NOW())>=21 AS True; -- true
SELECT EXTRACT(CENTURY FROM TIMESTAMP '1970-03-20 04:30:00.00000'); -- 20
--
-- all possible fields
--
SELECT EXTRACT(MICROSECONDS FROM DATE '2020-08-11');
SELECT EXTRACT(MILLISECONDS FROM DATE '2020-08-11');
SELECT EXTRACT(SECOND FROM DATE '2020-08-11');
SELECT EXTRACT(MINUTE FROM DATE '2020-08-11');
SELECT EXTRACT(HOUR FROM DATE '2020-08-11');
SELECT EXTRACT(DAY FROM DATE '2020-08-11');
SELECT EXTRACT(MONTH FROM DATE '2020-08-11');
SELECT EXTRACT(YEAR FROM DATE '2020-08-11');
SELECT EXTRACT(DECADE FROM DATE '2020-08-11');
SELECT EXTRACT(CENTURY FROM DATE '2020-08-11');
SELECT EXTRACT(MILLENNIUM FROM DATE '2020-08-11');
SELECT EXTRACT(ISOYEAR FROM DATE '2020-08-11');
SELECT EXTRACT(QUARTER FROM DATE '2020-08-11');
SELECT EXTRACT(WEEK FROM DATE '2020-08-11');
SELECT EXTRACT(DOW FROM DATE '2020-08-11');
SELECT EXTRACT(ISODOW FROM DATE '2020-08-11');
SELECT EXTRACT(DOY FROM DATE '2020-08-11');
SELECT EXTRACT(TIMEZONE FROM DATE '2020-08-11');
SELECT EXTRACT(TIMEZONE_M FROM DATE '2020-08-11');
SELECT EXTRACT(TIMEZONE_H FROM DATE '2020-08-11');
SELECT EXTRACT(EPOCH FROM DATE '2020-08-11');
SELECT EXTRACT(JULIAN FROM DATE '2020-08-11');
--
-- test trunc function!
--
SELECT DATE_TRUNC('MILLENNIUM', TIMESTAMP '1970-03-20 04:30:00.00000'); -- 1001

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