PostgreSQL 7.0 beta 4: Error in Insert/Select

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                        POSTGRESQL BUG REPORT TEMPLATE
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Your name               : Michael Shepelev
Your email address      : docent@alias.ru


System Configuration
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  Architecture (example: Intel Pentium)         : Intel Celeron 400

  Operating System (example: Linux 2.0.26 ELF)  : Mandrake 7.0 RE

  PostgreSQL version (example: PostgreSQL-6.5.1):   PostgreSQL-7.0 beta 4

  Compiler used (example:  gcc 2.8.0)           : gcc version 2.95.2
19991024 (release)


Please enter a FULL description of your problem:
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Sorry my english.
I found bug (IMHO) in Insert/Select Union command.
Result of SELECT UNION differs from INSERT SELECT UNION.


Please describe a way to repeat the problem.   Please try to provide a
concise reproducible example, if at all possible:
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I attach an example that demonstrates this bug.



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