The following bug has been logged on the website:
Bug reference: 17653
Logged by: Frédéric Poliquin
Email address: fpoliquin@gmail.com
PostgreSQL version: 11.16
Operating system: Windows 10
Description:
When doing math operations on numeric values, we often get a bad result when
using the ODBC driver.
Here is a short VBScript that reproduce the bug:
Set conn = CreateObject("ADODB.Connection")
conn.Open "Provider=MSDASQL;DRIVER=PostgreSQL
Unicode(x64);SERVER=xxx;DATABASE=xxx;UID=xxx;PWD=xxx;sslmode=require"
Set recordset = CreateObject("ADODB.Recordset")
recordset.Open "select 1000.000000000000000000000000000000000000 as val",
conn
WScript.echo recordset("val").Value
Just save the script in a "test.vbs" file, replace all "xxx" by the proper
values, install the latest ODBC x64 driver and execute in a console using
the command "cscript test.vbs".
The script will output the value "319,4352661581230730732507851" which makes
no sense. It should be "1000".
We don't have the bug when using DBeaver which points to the ODBC driver.
The server runs with Azure Database for Postgresql service.
If I cast the value to numeric(30,10), I don't have the error but it is a
dirty workaround which is very easy to forget.
Any help is appreciated.
Thank you.