SSL connection string for Azure PostgreSQL - correct syntax - vba

Question

I have a Microsoft Excel workbook which I connect to a PostgreSQL db. I have had this working with the db on localhost for some time.
I have now moved my db to Azure PostgreSQL. I have successfully reconfigured my queries/connections to pull data into the spreadsheet (by setting up a DSN in 'ODBC Data sources 64 bit') with SSL set to require.
The workbook includes some vba to write data back to the database. I am getting the error:
Runtime error: '-2147467259 (80004005)': FATAL: SSL connection is
required. Please specify SSL options and retry.
The error throws on the dbConnPublic.Open sqlConnString line
The relevant parts of the code look like this:
Sub WriteRowToDB()
' Define connectivity
Dim dbConnPublic As New ADODB.Connection
Dim sqlConnString As String
sqlConnString = OpenConnection()
dbConnPublic.Open sqlConnString
End Sub
Public Function OpenConnection() As String
'Define connection objects and terms
Dim sqlConnString As String
Dim myDriver As String: myDriver = "{PostgreSQL ANSI(x64)}"
Dim myServer As String: myServer = "djm-main-01.postgres.database.azure.com"
Dim myDatabase As String: myDatabase = "postgres"
Dim myUserName As String: myUserName = "djmmain01admin#djm-main-01"
Dim myPassword As String: myPassword = "[my password]" ' this replaced by the real password
' Open connection
sqlConnString = "Driver={PostgreSQL ANSI(x64)};" & _
"DSN=postgres;" & _
"Server=" & myServer & ";" & _
"Port=5432;" & _
"UID=" & myUserName & ";" & _
"PWD=" & myPassword & ";" & _
"Database=" & myDatabase & ";" & _
"ssl=true;READONLY=0;PROTOCOL=6.4;FAKEOIDINDEX=0;SHOWOIDCOLUMN=0;ROWVERSIONING=0;SHOWSYSTEMTABLES=1"
OpenConnection = sqlConnString
End Function
I have tried every combination of ssl=true, ssl=required, sslmode=required, using two parameters and three, some with caps, some lowercase, some mixed. cannot find anything that makes a difference. Also not sure if this syntax is Azure, PostgreSQL or ADODB.
Note that I can also successfully connect to the Azure db using DBeaver and command line psql from Windows, using SSL.

Answer 1

Hi anyone who is watching. So I worked this out.
Actually very simple, the required parameter is ssmode=require. It is case sensitive. I must have somehow missed this from my permutations. And therefore assume that the syntax is determined by the PostgreSQL ODBC driver.
This resource helped:
https://www.connectionstrings.com/
Additional gotcha to watch out for : when the password is included in the connection string, then any non-alphanumerics need to be url encoded which I wasn't thinking about,so my system generated password with an exclamation mark had to be converted to %21. I got the encoded password from the User DSN at HKEY_CURRENT_USER\Software\ODBC\ODBC.INI\
However I have now changed the password so that it does not use non-alphanumerics.
Hope this is useful.