select rdno from jieyue where bkno in ( select bkno from book
where bkname='孙子校释' )
)
--14 统计某读者当前借阅的图书的总数及总价。
select reader.rdname,count(jieyue.bkno) bsum,sum(book.price) psum from reader,jieyue,book where
jieyue.rdno='1101'
and
jieyue.bkno=book.bkno
reader.rdno=jieyue.rdno and jieyue.Return='0'
group by reader.rdname
and