【SQL】except 在1张表中，不在另1张表中

declare @table table(id int,name nvarchar(4))
declare @table2 table(id int,name nvarchar(4))
insert into @table values(1,'a')
insert into @table values(2,'a')
insert into @table values(3,'a')
insert into @table values(3,'a')
insert into @table values(3,'b')
insert into @table values(4,'c')
select * from @table
except select * from @table2