[DOCS] FW: [webmaster] Possible error in documentation for EXTRACT

[Mark Clark]

TWIMC,
           In the documentation for 
EXTRACT<http://www.postgresql.org/docs/9.5/interactive/functions-datetime.html#FUNCTIONS-DATETIME-EXTRACT>,
 the example for “century" is as follows:

SELECT EXTRACT(CENTURY FROM TIMESTAMP '2000-12-16 12:21:13');
Result: 20
SELECT EXTRACT(CENTURY FROM TIMESTAMP '2001-02-16 20:38:40');
Result: 21

I believe the result for the second SELECT is incorrect. I believe it should be:

SELECT EXTRACT(CENTURY FROM TIMESTAMP '2001-02-16 20:38:40');
Result: 20

Alternatively, you could change the example to:

SELECT EXTRACT(CENTURY FROM TIMESTAMP '2100-02-16 20:38:40');
Result: 21

If I have missed some point about how this should work, then please ignore this 
e-mail.

Thanks,
Mark Clark
mark.cl...@enlightedinc.com