It was implemented "Query..." for SNMP Table in "Table Columns" property page in 4.4 version. So starting from NetXMS 4.4 it will be possible to query all possible SNMP coluns if metric OID is configured correctly.
I also created another issue to create SNMP table directly from the MIB Browser ( https://track.radensolutions.com/issue/NX-2429 ).
I also created another issue to create SNMP table directly from the MIB Browser ( https://track.radensolutions.com/issue/NX-2429 ).