We have supplied a customer with a SQL based accounts package, however we have hit a problem with the language settings. This software requires the Language setting to be "English". On the site that we have installed the software on, the server settings and all SQL Login settings are set to "British English" to cater for other applications used on that server. This is causing the software we installed to crash when reading dates.
The other factor that contributes to the issue is that you can only use Windows Authentication with this software, you cannot use SQL Auth or a service account to connect to the database.
I have resolved the issues for most users, by creating a SQL login for a user group that has all users using the software. I have set the language to "English" for that login, and for most users that works.
The problem I am left with, is that there are a handful of users, that are also members of other SQL Groups, for example the domain admins are admin members of SQL, and have the sysadmin role. When they use the software, SQL does not care which login to use when connecting to the database, it just finds that this user has access to the database and uses the first user group that has a successful connection.
The other user groups have to stay as "British English" for the existing software on SQL. So is it possible to either set the language at database level, or force the connection to our database to go through our the user group we set up, and not any of the other user groups.
I have suggested to the customer installing a new named instance of SQL, but they are not keen on that route.