[snip]
> SELECT col1, MAX(col2), col3 FROM table GROUP BY col1;

Because col3 is not part of the GROUP BY clause, this query will not
guarantee that the col3 returned is associated with the col2 returned.
 In other words, running this query on the table containing
col1 / col2 / col3
1         1        1
1         2        3

may return

1         2        1
[/snip]

I have tested this several times and never got those kind of results, do
you have some docs?

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