CREATE TABLE people (People_ID NUMBER, Sex CLOB, Name CLOB, Date_of_Birth CLOB, Height FLOAT, Weight FLOAT)
CREATE TABLE candidate (Candidate_ID NUMBER, People_ID NUMBER, Poll_Source CLOB, Date CLOB, Support_rate FLOAT, Consider_rate FLOAT, Oppose_rate FLOAT, Unsure_rate FLOAT)

Give me the comparison about the sum of Weight over the Sex , and group by attribute Sex.
SELECT Sex, SUM(Weight) FROM people GROUP BY Sex
SELECT "Sex", SUM("Weight") FROM "people" GROUP BY "Sex"