Question about undefinably query...

Hi all,

there was a question on #postgresql (irc-channel) from CyberDuck without
an answer. A little example:

test=*# select generate_series(1,5), generate_series(6,10) order by 1;
generate_series | generate_series
-----------------+-----------------
1 | 6
2 | 7
3 | 8
4 | 9
5 | 10
(5 rows)

test=*# select generate_series(1,5), generate_series(7,10) order by 1;
generate_series | generate_series
-----------------+-----------------
1 | 7
1 | 8
1 | 9
1 | 10
2 | 8
2 | 9
2 | 10
2 | 7
3 | 9
3 | 10
3 | 7
3 | 8
4 | 10
4 | 7
4 | 8
4 | 9
5 | 7
5 | 8
5 | 9
5 | 10
(20 rows)

Why returns the first select 5 rows (i think, this is okay) and the 2nd
20 rows?

Version is a 8.1 on Debian.

Andreas
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Andreas Kretschmer
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