顯示特定作者的零售價格最高的所有圖書的作者,標題,零售和零售價格。如何使用from子句中的子查詢解決此問題?
我有下面的查詢。我有點困惑如何在from子句中做一個子查詢。
select lname, fname, title, retail
from author natural join bookauthor
natural join books
where retail=(select max(retail)
from books);
下面是我使用
FNAME LNAME TITLE RETAIL
---------- ---------- ------------------------------ ----------
SAM SMITH BODYBUILD IN 10 MINUTES A DAY 30.95
LISA PORTER BODYBUILD IN 10 MINUTES A DAY 30.95
JANICE JONES REVENGE OF MICKEY 22
TAMARA KZOCHSKY BUILDING A CAR WITH TOOTHPICKS 59.95
TINA PETERSON DATABASE IMPLEMENTATION 55.95
JUAN ADAMS DATABASE IMPLEMENTATION 55.95
JAMES AUSTIN DATABASE IMPLEMENTATION 55.95
JACK BAKER COOKING WITH MUSHROOMS 19.95
JAMES AUSTIN HOLY GRAIL OF ORACLE 75.95
LISA WHITE HANDCRANKED COMPUTERS 25
WILLIAM WHITE HANDCRANKED COMPUTERS 25
JANICE JONES E-BUSINESS THE EASY WAY 54.5
ROBERT ROBINSON PAINLESS CHILD-REARING 89.95
OSCAR FIELDS PAINLESS CHILD-REARING 89.95
JACK BAKER PAINLESS CHILD-REARING 89.95
SAM SMITH THE WOK WAY TO COOK 28.75
ROBERT ROBINSON BIG BEAR AND LITTLE DOVE 8.95
SAM SMITH HOW TO GET FASTER PIZZA 29.95
WILLIAM WHITE HOW TO MANAGE THE MANAGER 31.95
LISA WHITE SHORTEST POEMS 39.95
20 rows selected.
您正在使用哪個數據庫:
(和更改AUTHOR_ID,book_id您的具體表的列名)
其他辦法嗎?請顯示錶架構 – GurV
@GurV我正在使用JustLee書籍數據庫。 –