A "hash slice" is a list of values from the hash. It is not a hash itself. That means you have to use something a bit more than hash slicing to build the new hash you want to push on your array. It can be done in one statement... 
push @events,
    { map { $_ => $sqldata->[$i]{$_} } qw( col1 col2 col3 ) };

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...but why?

In reply to Re: Pushing a 'hash slice' to an AoH by Anonymous Monk
in thread Pushing a 'hash slice' to an AoH by bradcathey

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