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Re: Select gives the wrong results

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Crystle Numan wrote:
Dear all:

I am fairly knowledgeable about PostgreSQL but this behaviour is
stumping me. Any help would be wonderful. If you think it is a bug, let
me now and I'll file one.

(select values in DB (date stamps) between Jan 1, 2000 and Jan 1, 2005,
no results)

db_name=# SELECT * from person_detail WHERE field='2' AND
value>'946702800' AND value<'1104555600';
 id | person | field | value
----+--------+-------+-------
(0 rows)

You are comparing strings, which is not quite the same as a numerical comparison. The above range is empty, as '9...' > '1...' (even though the left string is shorter).

Either compare numbers, or left pad your left string with zeroes until it's the same length as the right string.

--
Alban Hertroys
alban@xxxxxxxxxxxxxxxxx

magproductions b.v.

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TIP 9: In versions below 8.0, the planner will ignore your desire to
      choose an index scan if your joining column's datatypes do not
      match

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