float column -- Ivan ?

[George Parkinson]

hi ruslan,
i find virtually nothing on scale/precision in wiki...
and even less in vstudio.
exactly where can i find these settings?
thanks,
george




________________________________
 From: Ruslan Zasukhin <ruslan_zasukhin at valentina-db.com>
To: "valentina at lists.macserve.net" <valentina at lists.macserve.net> 
Sent: Thursday, April 19, 2012 2:23:56 PM
Subject: Re: float column -- Ivan ?
 
On 4/19/12 8:52 PM, "George Parkinson" <george at microtherapy.ca> wrote:

Hi George,

> hello all,
> i have a float column (f) in table t.
> some values do not read back as inserted.
> 
> for example:
> INSERT INTO t (f) values (341.1) -->>  reads back as 341.10001
> INSERT INTO t (f) values (341.2) -->> reads back as 341.20001
> INSERT INTO t (f) values (341.3) -->> reads back as 341.29999
> INSERT INTO t (f) values (341.4) -->> reads back as 341.39999
> INSERT INTO t (f) values (341.5) -->> reads back as 341.50000
> INSERT INTO t (f) values (341.6) -->> reads back as 341.60001
> INSERT INTO t (f) values (341.7) -->> reads back as 341.70001
> INSERT INTO t (f) values (341.8) -->> reads back as 341.79999
> INSERT INTO t (f) values (341.9) -->> reads back as 341.89999
> INSERT INTO t (f) values (341.10) -->> reads back as 341.10001
> 
> the question is: is this normal?

FLOAT/DOUBLE columns have additional parameter decision/scale

Check it ...easiest way using Valentina Studio and your db.


-- 
Best regards,

Ruslan Zasukhin
VP Engineering and New Technology
Paradigma Software, Inc

Valentina - Joining Worlds of Information
http://www.paradigmasoft.com

[I feel the need: the need for speed]


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