(1)
table1.Select(x => x.aID).Intersect(table2.Select(x => x.bID));
(2)
table1.Select(x => x.aID).Except(table2.Select(x => x.bID));
table1.Select(x => x.aID).Intersect(table2.Select(x => x.bID));
(2)
table1.Select(x => x.aID).Except(table2.Select(x => x.bID));
Any
All
Contains
Join
这几个Linq操作符