timestamp.out

来自「postgresql8.3.4源码,开源数据库」· OUT 代码 · 共 1,377 行 · 第 1/5 页

--
-- 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.  We also check
-- that 'now' *does* change over a reasonable interval such as 100 msec.
-- NOTE: it is possible for this part of the test to fail if the transaction
-- block is entered exactly at local midnight; then 'now' and 'today' have
-- the same values and the counts will come out different.
INSERT INTO TIMESTAMP_TBL VALUES ('now');
SELECT pg_sleep(0.1);
 pg_sleep 
----------
 
(1 row)

BEGIN;
INSERT INTO TIMESTAMP_TBL VALUES ('now');
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';
 one 
-----
   1
(1 row)

SELECT count(*) AS Three FROM TIMESTAMP_TBL WHERE d1 = timestamp without time zone 'tomorrow';
 three 
-------
     3
(1 row)

SELECT count(*) AS One FROM TIMESTAMP_TBL WHERE d1 = timestamp without time zone 'yesterday';
 one 
-----
   1
(1 row)

SELECT count(*) AS One FROM TIMESTAMP_TBL WHERE d1 = timestamp(2) without time zone 'now';
 one 
-----
   1
(1 row)

COMMIT;
DELETE FROM TIMESTAMP_TBL;
-- verify uniform transaction time within transaction block
BEGIN;
INSERT INTO TIMESTAMP_TBL VALUES ('now');
SELECT pg_sleep(0.1);
 pg_sleep 
----------
 
(1 row)

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

SELECT count(*) AS two FROM TIMESTAMP_TBL WHERE d1 = timestamp(2) without time zone 'now';
 two 
-----
   2
(1 row)

COMMIT;
DELETE FROM TIMESTAMP_TBL;
-- Special values
INSERT INTO TIMESTAMP_TBL VALUES ('-infinity');
INSERT INTO TIMESTAMP_TBL VALUES ('infinity');
INSERT INTO TIMESTAMP_TBL VALUES ('epoch');
-- Obsolete special values
INSERT INTO TIMESTAMP_TBL VALUES ('invalid');
ERROR:  date/time value "invalid" is no longer supported
INSERT INTO TIMESTAMP_TBL VALUES ('current');
ERROR:  date/time value "current" is no longer supported
-- Postgres v6.0 standard output format
INSERT INTO TIMESTAMP_TBL VALUES ('Mon Feb 10 17:32:01 1997 PST');
INSERT INTO TIMESTAMP_TBL VALUES ('Invalid Abstime');
ERROR:  date/time value "Invalid Abstime" is no longer supported
INSERT INTO TIMESTAMP_TBL VALUES ('Undefined Abstime');
ERROR:  date/time value "Undefined Abstime" is no longer supported
-- 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');
ERROR:  time zone "america/does_not_exist" not recognized
-- 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');
ERROR:  date/time field value out of range: "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');
ERROR:  time zone displacement out of range: "Feb 16 17:32:01 -0097"
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 16 17:32:01 5097 BC');
ERROR:  timestamp out of range: "Feb 16 17:32:01 5097 BC"
SELECT '' AS "64", d1 FROM TIMESTAMP_TBL; 
 64 |             d1              
----+-----------------------------
    | -infinity
    | infinity
    | Thu Jan 01 00:00:00 1970
    | Mon Feb 10 17:32:01 1997
    | Mon Feb 10 17:32:01 1997
    | Mon Feb 10 17:32:02 1997
    | Mon Feb 10 17:32:01.40 1997
    | Mon Feb 10 17:32:01.50 1997
    | Mon Feb 10 17:32:01.60 1997
    | Thu Jan 02 00:00:00 1997
    | Thu Jan 02 03:04:05 1997
    | Mon Feb 10 17:32:01 1997
    | Mon Feb 10 17:32:01 1997
    | Mon Feb 10 17:32:01 1997
    | Mon Feb 10 17:32:01 1997
    | Tue Jun 10 17:32:01 1997
    | Sat Sep 22 18:19:20 2001
    | Wed Mar 15 08:14:01 2000
    | Wed Mar 15 13:14:02 2000
    | Wed Mar 15 12:14:03 2000
    | Wed Mar 15 03:14:04 2000
    | Wed Mar 15 02:14:05 2000
    | Mon Feb 10 17:32:01 1997
    | Mon Feb 10 17:32:01 1997
    | Mon Feb 10 17:32:00 1997
    | Mon Feb 10 17:32:01 1997
    | Mon Feb 10 17:32:01 1997
    | Mon Feb 10 17:32:01 1997
    | Mon Feb 10 17:32:01 1997
    | Mon Feb 10 17:32:01 1997
    | Mon Feb 10 17:32:01 1997
    | Mon Feb 10 17:32:01 1997
    | Mon Feb 10 17:32:01 1997
    | Mon Feb 10 17:32:01 1997
    | Tue Jun 10 18:32:01 1997
    | Mon Feb 10 17:32:01 1997
    | Tue Feb 11 17:32:01 1997
    | Wed Feb 12 17:32:01 1997
    | Thu Feb 13 17:32:01 1997
    | Fri Feb 14 17:32:01 1997
    | Sat Feb 15 17:32:01 1997
    | Sun Feb 16 17:32:01 1997
    | Tue Feb 16 17:32:01 0097 BC
    | Sat Feb 16 17:32:01 0097
    | Thu Feb 16 17:32:01 0597
    | Tue Feb 16 17:32:01 1097
    | Sat Feb 16 17:32:01 1697
    | Thu Feb 16 17:32:01 1797
    | Tue Feb 16 17:32:01 1897
    | Sun Feb 16 17:32:01 1997
    | Sat Feb 16 17:32:01 2097
    | Wed Feb 28 17:32:01 1996
    | Thu Feb 29 17:32:01 1996
    | Fri Mar 01 17:32:01 1996
    | Mon Dec 30 17:32:01 1996
    | Tue Dec 31 17:32:01 1996
    | Wed Jan 01 17:32:01 1997
    | Fri Feb 28 17:32:01 1997
    | Sat Mar 01 17:32:01 1997
    | Tue Dec 30 17:32:01 1997
    | Wed Dec 31 17:32:01 1997
    | Fri Dec 31 17:32:01 1999
    | Sat Jan 01 17:32:01 2000
    | Sun Dec 31 17:32:01 2000
    | Mon Jan 01 17:32:01 2001
(65 rows)

-- Demonstrate functions and operators
SELECT '' AS "48", d1 FROM TIMESTAMP_TBL
   WHERE d1 > timestamp without time zone '1997-01-02';
 48 |             d1              
----+-----------------------------
    | infinity
    | Mon Feb 10 17:32:01 1997
    | Mon Feb 10 17:32:01 1997
    | Mon Feb 10 17:32:02 1997
    | Mon Feb 10 17:32:01.40 1997
    | Mon Feb 10 17:32:01.50 1997
    | Mon Feb 10 17:32:01.60 1997
    | Thu Jan 02 03:04:05 1997
    | Mon Feb 10 17:32:01 1997
    | Mon Feb 10 17:32:01 1997
    | Mon Feb 10 17:32:01 1997
    | Mon Feb 10 17:32:01 1997
    | Tue Jun 10 17:32:01 1997
    | Sat Sep 22 18:19:20 2001
    | Wed Mar 15 08:14:01 2000
    | Wed Mar 15 13:14:02 2000
    | Wed Mar 15 12:14:03 2000
    | Wed Mar 15 03:14:04 2000
    | Wed Mar 15 02:14:05 2000
    | Mon Feb 10 17:32:01 1997
    | Mon Feb 10 17:32:01 1997
    | Mon Feb 10 17:32:00 1997
    | Mon Feb 10 17:32:01 1997
    | Mon Feb 10 17:32:01 1997
    | Mon Feb 10 17:32:01 1997
    | Mon Feb 10 17:32:01 1997
    | Mon Feb 10 17:32:01 1997
    | Mon Feb 10 17:32:01 1997
    | Mon Feb 10 17:32:01 1997
    | Mon Feb 10 17:32:01 1997
    | Mon Feb 10 17:32:01 1997