Question: What is the total roll with a decile less than 7, and an authority of state, in the macraes flat area?
SQL: SELECT COUNT("Roll") FROM "2-12303251-1" WHERE "Decile" = 7.0 AND "Authority" = 'state' AND "Area" = 'macraes flat';

Question: What year has a decile more than 6, in the Waikouaiti area?
SQL: SELECT "Years" FROM "2-12303251-1" WHERE "Decile" > 6.0 AND "Area" = 'Waikouaiti';