new settings precise_float_parsing(ensure string -> float conversion more precise but slower)

[yokofly]

timeplus backend database.
ver: from 2.9.10 timeplusd
before:

-> select to_float64('1.1468697')
1.1468696999999999
now:

-> select to_float64('1.1468697')
1.1468696999999999

SELECT
to_Float64('1.1468697')
SETTINGS
precise_float_parsing = 1

Query id: e537b2bf-4f38-487d-b074-a2651707b13f

┌─to_float64('1.1468697')─┐
│ 1.1468697 │
└─────────────────────────┘

1 row in set. Elapsed: 0.008 sec.

timeplusd :)