CREATE TABLE table_name_2 (downstream_rate VARCHAR2, version VARCHAR2, standard_name VARCHAR2)

What's the downstream rate for the Itu g.992.2 having a version of ADSL?
SELECT downstream_rate FROM table_name_2 WHERE version = "adsl" AND standard_name = "itu g.992.2"
SELECT "downstream_rate" FROM "table_name_2" WHERE "adsl" = "version" AND "itu g.992.2" = "standard_name"