Rasql_Round float number should have a consistent length for fractional part

[Bang Pham Huu]

This query:

select stddev_samp(<[0:5] 28,29,30,31,32,33>)
Result element 1: 1.87083 (5 digits after .)
number before round: 1.87082869339

and this query:

rasql -q 'select arctan(-10294012870517d)' --out string
Result element 1: -1.5708 (4 digits after .)
number before round: -1.57079632679

it should have either 4 or 5 digits length for fractional part, not both.

[Dimitar Misev]

We could add an option to rasql to control the output formatting.

[bbell]

First we should find out why it even bothers to round in the first place. Last I checked, we removed the base precision enforcement in csv/json output; perhaps it is still present in our string output?

[Dimitar Misev]

This is not in csv, it's in rasql.cc, which prints scalar results.
See browser:applications/rasql/rasql.cc#L541, for float/double it just does cout << scalar. We should make it consistent with the CSV/JSON output?