[sqlite] SQLite 3.1.0 Group By problem

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Hi All,
First, Thank you for excellent piece of software!
I am finding following problem would like to share:
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SELECT a FROM [table] GROUP BY a;
Error Message in Sqlite 3.1.0 alpha: "SQL error: GROUP BY may only be 
used on aggregate queries"
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I test this sql in Sqlite 3.0.8, it runs fine. Hope this can be fixed.
Thanks,
Ming