Re: NUMERIC type makes trouble in MS Access

Hi Tobias,

Could you please try the test drivers 10.03.0100 on Windows at
https://winpg.jp/~inoue/psqlodbc/index.html
?
The test drivers have an option
    Numeric(without precision) as
.

regards,
Hiroshi Inoue

On 2018/05/28 11:13, Tobias Wendorff wrote:
> Hi Craig,
>
> Am Mo, 28.05.2018, 03:34 schrieb Craig Ringer:
>> Some quick research suggests that Access's Decimal data type is
>> what you should be using. It's not floating point. This fits with
>> what you're saying, as the docs say Decimal in Access is limited
>> to 28 digits.
> But there's a problem: you can't change the field type of a linked
> table in MS Access. Even if the driver delivers the correct type,
> I cannot influence the decimal width (or anything else) and the
> problem inevitably arises.
>
> So, as Jan and I suggested, the only way is to apply a change
> either in the column itself or do it in realtime using a VIEW.
>
>> Seems like it probably has a more limited implementation using
>> fixed-point, not PostgreSQL's BCD representation, as they use
>> a fixed 17 bytes in the native storage.
>>
>> It should map as SQL_DECIMAL, NOT double or float.
> Sure, I didn't want to force fundamental changes here. I just
> wanted to suggest something like a "compatibility switch" for
> Microsoft Access when using "unlimited" NUMERIC in PostgreSQL.
>
> Best,
> Tobias