Oracle不是單一羣組功能：正在寫查詢

Question

我的查詢子查詢中有錯誤。我一直在努力工作幾個小時，直到我最近放棄。任何人都有在Oracle DBA中的專業知識？

如何編寫此查詢？我需要一個使用聚合max（）和sum（）的子查詢。

select at.au_id, 
    ((price*sales)*royalty_rate), 
    max(royalty_share) 
from royalties, titles, author_titles at 
group by royalty_rate 
having max(royalty_share) = (select max((price*sales)*royalty_rate) 
    from author_titles, titles, royalties 
    group by rollup (royalty_rate, royalty_share, au_id)); 

這裏是我有什麼，我需要通過彙總或GROUP BY CUBE

這裏使用集團的問題： [1]列出的作者（S），有/已收到的最大補償爲寫書， 和收到的賠償。如果涉及多名作者，請列出每位作者的賠償總額 。提示：發佈者爲書籍分配預付費和特許權使用費 。這些信息在版稅表中可用。專利使用費率爲 ，用於確定特許權使用費。向作者提供的 預付款和特許權使用費金額由author_titles表中的royalty_share 字段確定。此解決方案涉及一個子查詢以查找最大支付金額。

您可以將表格複製並粘貼到您喜歡使用的任何地方。謝謝。 我的表是：。

DROP TABLE authors; 
CREATE TABLE authors 
(
au_id CHAR(3)  NOT NULL, 
fname VARCHAR(15) NOT NULL, 
lname VARCHAR(15) NOT NULL, 
phone VARCHAR(12)   , 
address VARCHAR(20)   , 
city  VARCHAR(15)   , 
state CHAR(2)    , 
zip  CHAR(5)    , 
CONSTRAINT authors_pk PRIMARY KEY (au_id) 
); 
INSERT INTO authors VALUES('A01','Sarah','Buchman','718-496-7223','75 West 205 St','Bronx','NY','10468'); 
INSERT INTO authors VALUES('A02','Wendy','Heydemark','303-986-7020','2922 Baseline Rd','Boulder','CO','80303'); 
INSERT INTO authors VALUES('A03','Hallie','Hull','415-549-4278','3800 Waldo Ave, #14F','San Francisco','CA','94123'); 
INSERT INTO authors VALUES('A04','Klee','Hull','415-549-4278','3800 Waldo Ave, #14F','San Francisco','CA','94123'); 
INSERT INTO authors VALUES('A05','Christian','Kells','212-771-4680','114 Horatio St','New York','NY','10014'); 
INSERT INTO authors VALUES('A06',' ','Kellsey','650-836-7128','390 Serra Mall','Palo Alto','CA','94305'); 
INSERT INTO authors VALUES('A07','Paddy','O''Furniture','941-925-0752','1442 Main St','Sarasota','FL','34236'); 



DROP TABLE titles; 
CREATE TABLE titles 
    (
    title_id CHAR(3)  NOT NULL, 
    title VARCHAR(40) NOT NULL, 
    genre  VARCHAR(10)   , 
    pub_id  CHAR(3)  NOT NULL, 
    pages  INTEGER    , 
    price  DECIMAL(5,2)   , 
    sales  INTEGER    , 
    pubdate DATE     , 
    contract SMALLINT  NOT NULL, 
    CONSTRAINT titles_pk PRIMARY KEY (title_id), 
    CONSTRAINT Titles_pub_fk FOREIGN KEY (Pub_id) 
    REFERENCES Publishers (Pub_id) 
); 

INSERT INTO titles VALUES('T01','1977!','history','P01',107,21.99,566,DATE '2000-08-01',1); 
INSERT INTO titles VALUES('T02','200 Years of German Humor','history','P03',14,19.95,9566,DATE '1998-04-01',1); 
INSERT INTO titles VALUES('T03','Ask Your System Administrator','computer','P02',1226,39.95,25667,DATE '2000-09-01',1); 
INSERT INTO titles VALUES('T04','But I Did It Unconsciously','psychology','P04',510,12.99,13001,DATE '1999-05-31',1); 
INSERT INTO titles VALUES('T05','Exchange of Platitudes','psychology','P04',201,6.95,201440,DATE '2001-01-01',1); 
INSERT INTO titles VALUES('T06','How About Never?','biography','P01',473,19.95,11320,DATE '2000-07-31',1); 
INSERT INTO titles VALUES('T07','I Blame My Mother','biography','P03',333,23.95,1500200,DATE '1999-10-01',1); 
INSERT INTO titles VALUES('T08','Just Wait Until After School','children','P04',86,10.00,4095,DATE '2001-06-01',1); 
INSERT INTO titles VALUES('T09','Kiss My Boo-Boo','children','P04',22,13.95,5000,DATE '2002-05-31',1); 
INSERT INTO titles VALUES('T10','Not Without My Faberge Egg','biography','P01',NULL,NULL,NULL,NULL,0); 
INSERT INTO titles VALUES('T11','Perhaps It''s a Glandular Problem','psychology','P04',826,7.99,94123,DATE '2000-11-30',1); 
INSERT INTO titles VALUES('T12','Spontaneous, Not Annoying','biography','P01',507,12.99,100001,DATE '2000-08-31',1); 
INSERT INTO titles VALUES('T13','What Are The Civilian Applications?','history','P03',802,29.99,10467,DATE '1999-05-31',1); 


DROP TABLE author_titles; 
CREATE TABLE author_titles 
    (
    au_id   CHAR(3)  NOT NULL, 
    title_id  CHAR(3)  NOT NULL, 
    au_order  SMALLINT  NOT NULL, 
    royalty_share DECIMAL(5,2) NOT NULL, 
    CONSTRAINT authors_titles_pk PRIMARY KEY (au_id, title_id), 
    CONSTRAINT author_titles_au_fk FOREIGN KEY (au_id) 
    REFERENCES Authors (au_id), 
    CONSTRAINT author_titles_titles_pk FOREIGN KEY (title_id) 
    REFERENCES Titles (title_id) 
); 

INSERT INTO author_titles VALUES('A01','T01',1,1.0); 
INSERT INTO author_titles VALUES('A01','T02',1,1.0); 
INSERT INTO author_titles VALUES('A05','T03',1,1.0); 
INSERT INTO author_titles VALUES('A03','T04',1,0.6); 
INSERT INTO author_titles VALUES('A04','T04',2,0.4); 
INSERT INTO author_titles VALUES('A04','T05',1,1.0); 
INSERT INTO author_titles VALUES('A02','T06',1,1.0); 
INSERT INTO author_titles VALUES('A02','T07',1,0.5); 
INSERT INTO author_titles VALUES('A04','T07',2,0.5); 
INSERT INTO author_titles VALUES('A06','T08',1,1.0); 
INSERT INTO author_titles VALUES('A06','T09',1,1.0); 
INSERT INTO author_titles VALUES('A02','T10',1,1.0); 
INSERT INTO author_titles VALUES('A03','T11',2,0.3); 
INSERT INTO author_titles VALUES('A04','T11',3,0.3); 
INSERT INTO author_titles VALUES('A06','T11',1,0.4); 
INSERT INTO author_titles VALUES('A02','T12',1,1.0); 
INSERT INTO author_titles VALUES('A01','T13',1,1.0); 




DROP TABLE royalties; 
CREATE TABLE royalties 
    (
    title_id  CHAR(3)  NOT NULL, 
    advance  DECIMAL(9,2)   , 
    royalty_rate DECIMAL(5,2)   , 
    CONSTRAINT royalties_pk PRIMARY KEY (title_id), 
    constraint roy_Titles_fk FOREIGN KEY (title_id) REFERENCES Titles (title_id) 
); 

Alter table royalties disable constraint roy_titles_fk ; 

INSERT INTO royalties VALUES('T01',10000,0.05); 
INSERT INTO royalties VALUES('T02',1000,0.06); 
INSERT INTO royalties VALUES('T03',15000,0.07); 
INSERT INTO royalties VALUES('T04',20000,0.08); 
INSERT INTO royalties VALUES('T05',100000,0.09); 
INSERT INTO royalties VALUES('T06',20000,0.08); 
INSERT INTO royalties VALUES('T07',1000000,0.11); 
INSERT INTO royalties VALUES('T08',0,0.04); 
INSERT INTO royalties VALUES('T09',0,0.05); 
INSERT INTO royalties VALUES('T10',NULL,NULL); 
INSERT INTO royalties VALUES('T11',100000,0.07); 
INSERT INTO royalties VALUES('T12',50000,0.09); 
INSERT INTO royalties VALUES('T13',20000,0.06); 

Alter table royalties enable constraint roy_titles_fk ; 

commit; 
DROP TABLE publishers; 
CREATE TABLE publishers 
    (
    pub_id CHAR(3)  NOT NULL, 
    pname VARCHAR(20) NOT NULL, 
    city  VARCHAR(15) NOT NULL, 
    state CHAR(2)    , 
    country VARCHAR(15) NOT NULL, 
    CONSTRAINT publishers_pk PRIMARY KEY (pub_id) 
); 
INSERT INTO publishers VALUES('P01','Abatis Publishers','New York','NY','USA'); 
INSERT INTO publishers VALUES('P02','Core Dump Books','San Francisco','CA','USA'); 
INSERT INTO publishers VALUES('P03','Schadenfreude Press','Hamburg',NULL,'Germany'); 
INSERT INTO publishers VALUES('P04','Tenterhooks Press','Berkeley','CA','USA'); 

這是我很難:(

Answer 1

讓我們做這步之遙，常常更容易在不連續的步驟來處理一個任務，根據你嘗試過什麼，似乎我希望這可以幫助你學習概念

-- 1) First you know you are looking for authors, so select all the authors 
SELECT a.au_id 
    FROM authors a 

-- 2) Build up all of your table joins since we know we will need data from all these tables 
-- the author_titles maps authors to titles, and titles map to royalties. Use the foreign keys provided 
SELECT a.au_id 
    FROM authors a 
INNER JOIN author_titles at ON a.au_id = at.au_id 
INNER JOIN titles t   ON at.title_id = t.title_id 
INNER JOIN royalties r  ON t.title_id = r.title_id 

-- 3) Figure out the formula for an author's compensation 
-- 3a) Notice that the royalties table has NULLs for advance and royalty_rate. Convert these to 0 
-- 3b) Notice that the titles table has NULLs for price and sales. Convert these to 0 
SELECT a.au_id 
     ,total_compensation = (at.royalty_share * NVL(r.advance, 0)) + (at.royalty_share * NVL(r.royalty_rate,0) * NVL((t.price * t.sales),0)) 
    FROM authors a 
INNER JOIN author_titles at ON a.au_id = at.au_id 
INNER JOIN titles t   ON at.title_id = t.title_id 
INNER JOIN royalties r  ON t.title_id = r.title_id 

-- 4) Summarize the compensation for each author by adding the group by author id 
SELECT a.au_id 
     ,total_compensation = SUM((at.royalty_share * NVL(r.advance, 0)) + (at.royalty_share * NVL(r.royalty_rate,0) * NVL((t.price * t.sales),0))) 
    FROM authors a 
INNER JOIN author_titles at ON a.au_id = at.au_id 
INNER JOIN titles t   ON at.title_id = t.title_id 
INNER JOIN royalties r  ON t.title_id = r.title_id 
GROUP BY a.au_id 

-- 5) Find the the highest compensation. It is the MAX of the previous query 
SELECT highest_compensation = MAX(s.total_compensation) 
    FROM 
    (SELECT a.au_id 
      ,total_compensation = SUM((at.royalty_share * NVL(r.advance, 0)) + (at.royalty_share * NVL(r.royalty_rate,0) * NVL((t.price * t.sales),0))) 
     FROM authors a 
    INNER JOIN author_titles at ON a.au_id = at.au_id 
    INNER JOIN titles t   ON at.title_id = t.title_id 
    INNER JOIN royalties r  ON t.title_id = r.title_id 
    GROUP BY a.au_id) s 

-- 6) Find the author(s) that match the highest compensation by combining 4) and 5) 
SELECT t1.au_id 
    FROM 
    (SELECT a.au_id 
      ,total_compensation = SUM((at.royalty_share * NVL(r.advance, 0)) + (at.royalty_share * NVL(r.royalty_rate,0) * NVL((t.price * t.sales),0))) 
     FROM authors a 
    INNER JOIN author_titles at ON a.au_id = at.au_id 
    INNER JOIN titles t   ON at.title_id = t.title_id 
    INNER JOIN royalties r  ON t.title_id = r.title_id 
    GROUP BY a.au_id) t1 
WHERE t1.total_compensation = 
    (SELECT highest_compensation = MAX(s.total_compensation) 
     FROM 
     (SELECT a.au_id 
       ,total_compensation = SUM((at.royalty_share * NVL(r.advance, 0)) + (at.royalty_share * NVL(r.royalty_rate,0) * NVL((t.price * t.sales),0))) 
      FROM authors a 
     INNER JOIN author_titles at ON a.au_id = at.au_id 
     INNER JOIN titles t   ON at.title_id = t.title_id 
     INNER JOIN royalties r  ON t.title_id = r.title_id 
     GROUP BY a.au_id) s)