[Cppcms-users] Cppdb: Bound double constant becomes string of integer

[CN <cn...@fa...>]

The following double constant 1000000. passed to PostgreSQL:

const double E6=1000000.f;
cppdb::result r=db_session << "SELECT amount/? FROM mytable" << E6;

reaches PostgreSQL as string "1000000":

Parameter:$1 = '1000000'

As a result, when amount is small, the selected result always becomes 0
rather than decimal like 0.01.

Is there any way I can force the parameter to be sent to back end as
float or long double?

Regards,
CN

-- 
http://www.fastmail.fm - One of many happy users:
  http://www.fastmail.fm/help/overview_quotes.html