Question: What's the island with a summit of Haleakalā?
SQL: SELECT "Island" FROM "2-18946749-3" WHERE "Summit" = 'Haleakalā';

Question: What's the lowest Col ranked less than 6 with an island of molokaʻi?
SQL: SELECT MIN("Col (m)") FROM "2-18946749-3" WHERE "Island" = 'island of molokaʻi' AND "Rank" < 6.0;

Question: What's the col (m) ranked more than 4 with a summit of Kawaikini?
SQL: SELECT "Col (m)" FROM "2-18946749-3" WHERE "Rank" > 4.0 AND "Summit" = 'Kawaikini';

Question: What's the rank when the col (m) is less than 33 and has a summit of Haleakalā?
SQL: SELECT SUM("Rank") FROM "2-18946749-3" WHERE "Col (m)" < 33.0 AND "Summit" = 'Haleakalā';

Question: What's the summit when the rank is less than 2 and has a col (m) of 0?
SQL: SELECT "Summit" FROM "2-18946749-3" WHERE "Col (m)" = 0.0 AND "Rank" < 2.0;