QUERY: CREATE TABLE TIMESPAN_TBL (f1 timespan);
QUERY: INSERT INTO TIMESPAN_TBL (f1) VALUES ('@ 1 minute');
QUERY: INSERT INTO TIMESPAN_TBL (f1) VALUES ('@ 5 hour');
QUERY: INSERT INTO TIMESPAN_TBL (f1) VALUES ('@ 10 day');
QUERY: INSERT INTO TIMESPAN_TBL (f1) VALUES ('@ 34 year');
QUERY: INSERT INTO TIMESPAN_TBL (f1) VALUES ('@ 3 months');
QUERY: INSERT INTO TIMESPAN_TBL (f1) VALUES ('@ 14 seconds ago');
QUERY: INSERT INTO TIMESPAN_TBL (f1) VALUES ('1 day 2 hours 3 minutes 4 seconds');
QUERY: INSERT INTO TIMESPAN_TBL (f1) VALUES ('6 years');
QUERY: INSERT INTO TIMESPAN_TBL (f1) VALUES ('5 months');
QUERY: INSERT INTO TIMESPAN_TBL (f1) VALUES ('5 months 12 hours');
QUERY: INSERT INTO TIMESPAN_TBL (f1) VALUES ('badly formatted timespan');
WARN:Bad timespan external representation 'badly formatted timespan'
QUERY: INSERT INTO TIMESPAN_TBL (f1) VALUES ('@ 30 eons ago');
WARN:Bad timespan external representation '@ 30 eons ago'
QUERY: SELECT '' AS ten, TIMESPAN_TBL.*;
ten|f1                           
---+-----------------------------
   |@ 1 min                      
   |@ 5 hours                    
   |@ 10 days                    
   |@ 34 years                   
   |@ 3 mons                     
   |@ 14 secs ago                
   |@ 1 day 2 hours 3 mins 4 secs
   |@ 6 years                    
   |@ 5 mons                     
   |@ 5 mons 12 hours            
(10 rows)

QUERY: SELECT '' AS nine, TIMESPAN_TBL.*
   WHERE TIMESPAN_TBL.f1 <> '@ 10 days'::timespan;
nine|f1                           
----+-----------------------------
    |@ 1 min                      
    |@ 5 hours                    
    |@ 34 years                   
    |@ 3 mons                     
    |@ 14 secs ago                
    |@ 1 day 2 hours 3 mins 4 secs
    |@ 6 years                    
    |@ 5 mons                     
    |@ 5 mons 12 hours            
(9 rows)

QUERY: SELECT '' AS three, TIMESPAN_TBL.*
   WHERE TIMESPAN_TBL.f1 <= '@ 5 hours'::timespan;
three|f1           
-----+-------------
     |@ 1 min      
     |@ 5 hours    
     |@ 14 secs ago
(3 rows)

QUERY: SELECT '' AS three, TIMESPAN_TBL.*
   WHERE TIMESPAN_TBL.f1 < '@ 1 day'::timespan;
three|f1           
-----+-------------
     |@ 1 min      
     |@ 5 hours    
     |@ 14 secs ago
(3 rows)

QUERY: SELECT '' AS one, TIMESPAN_TBL.*
   WHERE TIMESPAN_TBL.f1 = '@ 34 years'::timespan;
one|f1        
---+----------
   |@ 34 years
(1 row)

QUERY: SELECT '' AS five, TIMESPAN_TBL.*
   WHERE TIMESPAN_TBL.f1 >= '@ 1 month'::timespan;
five|f1               
----+-----------------
    |@ 34 years       
    |@ 3 mons         
    |@ 6 years        
    |@ 5 mons         
    |@ 5 mons 12 hours
(5 rows)

QUERY: SELECT '' AS nine, TIMESPAN_TBL.*
   WHERE TIMESPAN_TBL.f1 > '@ 3 seconds ago'::timespan;
nine|f1                           
----+-----------------------------
    |@ 1 min                      
    |@ 5 hours                    
    |@ 10 days                    
    |@ 34 years                   
    |@ 3 mons                     
    |@ 1 day 2 hours 3 mins 4 secs
    |@ 6 years                    
    |@ 5 mons                     
    |@ 5 mons 12 hours            
(9 rows)

QUERY: SELECT '' AS fortyfive, r1.*, r2.*
   FROM TIMESPAN_TBL r1, TIMESPAN_TBL r2
   WHERE r1.f1 > r2.f1
   ORDER BY r1.f1, r2.f1;
fortyfive|f1                           |f1                           
---------+-----------------------------+-----------------------------
         |@ 1 min                      |@ 14 secs ago                
         |@ 5 hours                    |@ 14 secs ago                
         |@ 5 hours                    |@ 1 min                      
         |@ 1 day 2 hours 3 mins 4 secs|@ 14 secs ago                
         |@ 1 day 2 hours 3 mins 4 secs|@ 1 min                      
         |@ 1 day 2 hours 3 mins 4 secs|@ 5 hours                    
         |@ 10 days                    |@ 14 secs ago                
         |@ 10 days                    |@ 1 min                      
         |@ 10 days                    |@ 5 hours                    
         |@ 10 days                    |@ 1 day 2 hours 3 mins 4 secs
         |@ 3 mons                     |@ 14 secs ago                
         |@ 3 mons                     |@ 1 min                      
         |@ 3 mons                     |@ 5 hours                    
         |@ 3 mons                     |@ 1 day 2 hours 3 mins 4 secs
         |@ 3 mons                     |@ 10 days                    
         |@ 5 mons                     |@ 14 secs ago                
         |@ 5 mons                     |@ 1 min                      
         |@ 5 mons                     |@ 5 hours                    
         |@ 5 mons                     |@ 1 day 2 hours 3 mins 4 secs
         |@ 5 mons                     |@ 10 days                    
         |@ 5 mons                     |@ 3 mons                     
         |@ 5 mons 12 hours            |@ 14 secs ago                
         |@ 5 mons 12 hours            |@ 1 min                      
         |@ 5 mons 12 hours            |@ 5 hours                    
         |@ 5 mons 12 hours            |@ 1 day 2 hours 3 mins 4 secs
         |@ 5 mons 12 hours            |@ 10 days                    
         |@ 5 mons 12 hours            |@ 3 mons                     
         |@ 5 mons 12 hours            |@ 5 mons                     
         |@ 6 years                    |@ 14 secs ago                
         |@ 6 years                    |@ 1 min                      
         |@ 6 years                    |@ 5 hours                    
         |@ 6 years                    |@ 1 day 2 hours 3 mins 4 secs
         |@ 6 years                    |@ 10 days                    
         |@ 6 years                    |@ 3 mons                     
         |@ 6 years                    |@ 5 mons                     
         |@ 6 years                    |@ 5 mons 12 hours            
         |@ 34 years                   |@ 14 secs ago                
         |@ 34 years                   |@ 1 min                      
         |@ 34 years                   |@ 5 hours                    
         |@ 34 years                   |@ 1 day 2 hours 3 mins 4 secs
         |@ 34 years                   |@ 10 days                    
         |@ 34 years                   |@ 3 mons                     
         |@ 34 years                   |@ 5 mons                     
         |@ 34 years                   |@ 5 mons 12 hours            
         |@ 34 years                   |@ 6 years                    
(45 rows)