Get the name of the most common data type which has type type.
The returned value may be null either if the provider does not implement that method, or if there is no
DBMS data type which could contain data of the g_type type (for example null may be
returned if a DBMS has integers only up to 4 bytes and a INT64 is requested).
| this |
a server provider. |
| cnc |
a Connection object or null |
| type |
a Type value type |
|
the name of the DBMS type, or null |