What is the smallest roll with an Authority of state, a Name of newfield park school, and a Decile smaller than 2?
CREATE TABLE "invercargill_city" (
  "name" text,
  "gender" text,
  "area" text,
  "authority" text,
  "decile" real,
  "roll" real
);
SELECT MIN("roll") FROM "invercargill_city" WHERE "authority"='state' AND "name"='newfield park school' AND "decile"<2;