Get information about the DSN named dsn_name.
dsn_name's format is "[<username>[:<password>]@]<DSN>" (if <username&
gt; and optionally <password> are provided, they are ignored). Also see the
dsn_split utility function.
| dsn_name |
the name of the DSN to look for |
|
a pointer to read-only DsnInfo structure, or null if not found |