Bad result?

Hello ,

============================================================================
                        POSTGRESQL BUG REPORT TEMPLATE
============================================================================


Your name               :       Vladimir Kamaev
Your email address      :       kamaev@zodchiy.ru


System Configuration
---------------------
  Architecture (example: Intel Pentium)         :       Intel Pentium II
  Operating System (example: Linux 2.0.26 ELF)  :       Linux 2.2.10
  PostgreSQL version (example: PostgreSQL-6.5.3):       PostgreSQL-6.5.3
  Compiler used (example:  gcc 2.8.0)           :       gcc-2.7.2.3

Please enter a FULL description of your problem:
------------------------------------------------

Bad result?

=====================================
test=> \i 00
CREATE TABLE test ( num int4, price float );
CREATE

SELECT num, max( price ) FROM test GROUP BY num;
num|max
---+---
   |
(1 row)


DROP TABLE test;
DROP
EOF

test=>
=====================================

Please describe a way to repeat the problem.   Please try to provide a
concise reproducible example, if at all possible:
----------------------------------------------------------------------

If you know how this problem might be fixed, list the solution below:
---------------------------------------------------------------------

Best regards,
 Kamaev                          mailto:kamaev@zodchiy.ru