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comparing dates?

P: n/a
My date setting is ISO with US conventions, and output from a select is in
the form yyyy-mm-dd (2002-01-18, for example.

When I do a select such as

SELECT * FROM table WHERE date BETWEEN '2001-12-28' AND '2002-01-28'

It misses the entry with date '2002-01-28' (which does exist!).


SELECT * FROM table WHERE date = '2001-12-28' ;

gives me '0 rows'.
The only way I've been able to handle this, so far, is in this fashion:

date BETWEEN 20011228 - .001 AND 20020128 + .001 ;

and similarly instead of = using, I can use

date BETWEEN 20020128 - .001 AND 20020128 + .001
I must be missing something, but I can't find it.

What is the 'right' way to select for a date type = a particular date, and
for BETWEEN to work as advertised?

I have a copy of 'Practical Postgresql', but I can't find the answer
there, or in the online manual. Of course there are a lot of places to
look and I may have missed it.


John Velman
Jul 19 '05 #1
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1 Reply

P: n/a
Jhon, try this
SELECT * FROM table WHERE date BETWEEN '2001-12-28'::date AND '2002-01-28'::date
Jul 19 '05 #2

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