Multiple databases within the backend configuration

Hi Everyone,
I’m trying to use Vault’s database secret backend (for MSSQL).
In the documentation it states that in order for Vault to create users
within the RDBMS, the following should run:

$ vault write mssql/config/connection \
    connection_string="server=localhost;port=1433;user id=sa;password=Password!;database=AdventureWorks;app name=vault;"

My question is, in case I have several database servers, how can I configure Vault
to open an account in all of them at once?
Thanks in advance.