Fixed #10033: In the Oracle backend, restored code lost in the aggregation merge that ensured a datetime object is returned for fields known to be datetimes, even when the time part is all zero.
Fixed #10033: In the Oracle backend, restored code lost in the aggregation merge that ensured a datetime object is returned for fields known to be datetimes, even when the time part is all zero.


git-svn-id: 554f83ef17aa7291f84efa897c1acfc5d0035373@9747 bcc190cf-cafb-0310-a4f2-bffc1f526a37

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