reltime.out

来自「postgresql8.3.4源码,开源数据库」· OUT 代码 · 共 106 行

--
-- RELTIME
--
CREATE TABLE RELTIME_TBL (f1 reltime);
INSERT INTO RELTIME_TBL (f1) VALUES ('@ 1 minute');
INSERT INTO RELTIME_TBL (f1) VALUES ('@ 5 hour');
INSERT INTO RELTIME_TBL (f1) VALUES ('@ 10 day');
INSERT INTO RELTIME_TBL (f1) VALUES ('@ 34 year');
INSERT INTO RELTIME_TBL (f1) VALUES ('@ 3 months');
INSERT INTO RELTIME_TBL (f1) VALUES ('@ 14 seconds ago');
-- badly formatted reltimes
INSERT INTO RELTIME_TBL (f1) VALUES ('badly formatted reltime');
ERROR:  invalid input syntax for type reltime: "badly formatted reltime"
INSERT INTO RELTIME_TBL (f1) VALUES ('@ 30 eons ago');
ERROR:  invalid input syntax for type reltime: "@ 30 eons ago"
-- test reltime operators
SELECT '' AS six, * FROM RELTIME_TBL;
 six |      f1       
-----+---------------
     | @ 1 min
     | @ 5 hours
     | @ 10 days
     | @ 34 years
     | @ 3 mons
     | @ 14 secs ago
(6 rows)

SELECT '' AS five, * FROM RELTIME_TBL
   WHERE RELTIME_TBL.f1 <> reltime '@ 10 days';
 five |      f1       
------+---------------
      | @ 1 min
      | @ 5 hours
      | @ 34 years
      | @ 3 mons
      | @ 14 secs ago
(5 rows)

SELECT '' AS three, * FROM RELTIME_TBL
   WHERE RELTIME_TBL.f1 <= reltime '@ 5 hours';
 three |      f1       
-------+---------------
       | @ 1 min
       | @ 5 hours
       | @ 14 secs ago
(3 rows)

SELECT '' AS three, * FROM RELTIME_TBL
   WHERE RELTIME_TBL.f1 < reltime '@ 1 day';
 three |      f1       
-------+---------------
       | @ 1 min
       | @ 5 hours
       | @ 14 secs ago
(3 rows)

SELECT '' AS one, * FROM RELTIME_TBL
   WHERE RELTIME_TBL.f1 = reltime '@ 34 years';
 one |     f1     
-----+------------
     | @ 34 years
(1 row)

SELECT '' AS two, * FROM RELTIME_TBL
   WHERE RELTIME_TBL.f1 >= reltime '@ 1 month';
 two |     f1     
-----+------------
     | @ 34 years
     | @ 3 mons
(2 rows)

SELECT '' AS five, * FROM RELTIME_TBL
   WHERE RELTIME_TBL.f1 > reltime '@ 3 seconds ago';
 five |     f1     
------+------------
      | @ 1 min
      | @ 5 hours
      | @ 10 days
      | @ 34 years
      | @ 3 mons
(5 rows)

SELECT '' AS fifteen, r1.*, r2.*
   FROM RELTIME_TBL r1, RELTIME_TBL r2
   WHERE r1.f1 > r2.f1
   ORDER BY r1.f1, r2.f1;
 fifteen |     f1     |      f1       
---------+------------+---------------
         | @ 1 min    | @ 14 secs ago
         | @ 5 hours  | @ 14 secs ago
         | @ 5 hours  | @ 1 min
         | @ 10 days  | @ 14 secs ago
         | @ 10 days  | @ 1 min
         | @ 10 days  | @ 5 hours
         | @ 3 mons   | @ 14 secs ago
         | @ 3 mons   | @ 1 min
         | @ 3 mons   | @ 5 hours
         | @ 3 mons   | @ 10 days
         | @ 34 years | @ 14 secs ago
         | @ 34 years | @ 1 min
         | @ 34 years | @ 5 hours
         | @ 34 years | @ 10 days
         | @ 34 years | @ 3 mons
(15 rows)