What's the standard name with an ADSL2 version and a 01.5 1.5 mbit/s downstream rate?
CREATE TABLE "adsl_standards" (
  "version" text,
  "standard_name" text,
  "common_name" text,
  "downstream_rate" text,
  "upstream_rate" text
);
SELECT "standard_name" FROM "adsl_standards" WHERE "version"='adsl2' AND "downstream_rate"='01.5 1.5 mbit/s';