THIS TOPIC APPLIES TO:SQL Server Azure SQL Database Azure SQL Data Warehouse Parallel Data Warehouse
Returns the database name that is specified by the user in the database connection string. This is the database that is specified by using the sqlcmd -d option (USE database) or the ODBC data source expression (initial catalog =databasename).
This database is not the same as the default user database.
If the initial database is not specified, the function returns an empty string.