linq 暂存

单表-排序
IOrderedQueryable<String>
from t in T_BookBaseInfo 
orderby t.BookCode
select t.BookName

连表-排序
IOrderedQueryable<>
from t in T_BookBaseInfo  join f in  T_DraftFinishMarks on t.BookCode equals f.BookCode
orderby f.PublisherCode descending
select new {t.BookName,f.PublisherCode}