As PostgreSQL stores timestamps with a fractional part, does it mean that WHERE f BETWEEN '2012-04-23 00:00:00' AND '2012'04-23 23:59:59' might miss records with values of f equal to 23:59:59.1234 or so?
pgsql-general by date:
Соглашаюсь с условиями обработки персональных данных