我嘗試獲取parts_key中未包含的parts_keywords中的所有行。不幸的是,我得到了兩張表的所有行。 SELECT *FROM parts_keywords
LEFT OUTER JOIN parts_questions ON parts_keywords.ID = parts_questions.question_id
WHERE parts_questions.
我在Golfers問題中設置了一組數組(每週都應該組成一個組,一次,每個人都確切地扮演着每星期一次): int: gr; %number of groups
set of int: G=1..gr;
int: sz; %size of groups
set of int: S=1..sz;
int: n=gr*sz; %number of players
set of int: P=1.