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25db56bc0c
ambiguous typing information about numerics
when columns are embedded in subqueries as well
as when ROWNUM is consulted with subqueries, as we
do for limit/offset. We've added these ambiguous
conditions to the cx_oracle "convert to Decimal()"
handler, so that we receive numerics as Decimal
in more cases instead of as floats. These are
then converted, if requested, into Integer
or Float, or otherwise kept as the lossless
Decimal [ticket:1840].