我在Oracle中使用sqlplus，我的问题是：
这是我的数据库：
drop table history;
drop table currentloan;
drop table member;
drop table book;
/*
creates table with 6 variables
assigns one primary key
uses different data types for different cases
*/
create table Book
(bookID number(12) Primary Key,
ISBN number(13),
title varchar(50),
author varchar(20),
publish_year number(4),
category char(11));
/*
Inserts tuples with matching variables
uses different book categories for testing purposes
*/
insert into Book values('7839494', '9780143122784', 'Guitar Zero', 'Gary Marcus', '2012', 'non-fiction');
insert into Book values('7839495', '9780143122784', 'Guitar Zero', 'Gary Marcus', '2012', 'non-fiction');
insert into Book values('7839496', '9780143122784', 'Guitar Zero', 'Gary Marcus', '2012', 'non-fiction');
insert into Book values('1405904', '9780071812436', 'Oracle Database 12c PL/SQL Programming', 'Michael McLaughlin', '2014', 'reference');
insert into Book values('9890304', '9781449343033', 'Oracle Essentials: Oracle Database 12c', 'Rick Greenwald', '2013', 'reference');
insert into Book values('1893409', '9781598635034', 'Music Theory for Computer Musicians', 'Michael Hewitt', '2008', 'non-fiction');
insert into Book values('3848598', '9781119247791', 'Java All-in-One For Dummies', 'Doug Lowe', '2017', 'non-fiction');
insert into Book values('3848599', '9781119247791', 'Java All-in-One For Dummies', 'Doug Lowe', '2017', 'non-fiction');
insert into Book values('3049891', '9780679805274', 'Oh, the Places Youll Go', 'Dr. Seuss', '1990', 'Childrens');
insert into Book values('3049892', '9780679805274', 'Oh, the Places Youll Go', 'Dr. Seuss', '1990', 'Childrens');
insert into Book values('3049893', '9780679805274', 'Oh, the Places Youll Go', 'Dr. Seuss', '1990', 'Childrens');
insert into Book values('9839209', '9780072465631', 'Database Management Systems', 'Raghu Ramakrishnan', '2008', 'reference');
insert into Book values('3234567', '9780316605106', 'Cirque du Freak: A Living Nightmare', 'Darren Shan', '2002', 'fiction');
insert into Book values('3234568', '9780316605106', 'Cirque du Freak: A Living Nightmare', 'Darren Shan', '2002', 'fiction');
insert into Book values('3234569', '9780316605106', 'Cirque du Freak: A Living Nightmare', 'Darren Shan', '2002', 'fiction');
insert into Book values('3234570', '9780316605106', 'Cirque du Freak: A Living Nightmare', 'Darren Shan', '2002', 'fiction');
insert into Book values('1239480', '9781421539645', 'DeathNote Black Edition Vol. 1', 'Tsugumi Ohba', '2010', 'fiction');
insert into Book values('5467878', '9780877798095', 'Merriam_Websters Collegiate Dictionary', 'Merriam_Webster', '2003', 'reference');
insert into Book values('5467879', '9780877798095', 'Merriam_Websters Collegiate Dictionary', 'Merriam_Webster', '2003', 'reference');
commit;
/*
Creates member table with 6 variables
assigns one primary key
uses not null to ensure efficiency
*/
create table Member
(memberID number(15) Primary Key,
lastname char(15),
firstname char(15) not null,
address varchar(30),
phone_number number(10),
limit number(3));
/*
Uses insert to fill member table with values
ensures values differ for testing
*/
insert into Member values ('00986845', 'Guevara', 'Merlyn', '9705 hardwood ln', '9806369324', '5');
insert into Member values ('00425663', 'Courtney', 'Kacey', '1520 glengarry dr', '9848339522', '5');
insert into Member values ('00327889', 'Wells', 'Trey', '650 zack rd', '9802428333', '5');
insert into Member values ('00546283', 'Lopez', 'Manny', '123 Road st', '7046368300', '10');
insert into Member values ('00728432', 'Mondragon', 'Alpha', '6100 Raven peak dr', '7043028422', '5');
insert into Member values ('00345674', 'Jones', 'David', '4321 Rowan Way', '9803334564', '7');
insert into Member values ('00456742', 'Smith', 'John', '3456 Circle Pl', '7043239098', '8');
commit;
/* Generates table to track books checked out
Initializes 4 different variables
*/
create table CurrentLoan
( memberID number(15),
bookID number(12),
loan_date varchar(10),
due_date varchar(10),
FOREIGN KEY(bookID) REFERENCES book(bookID),
Foreign key(memberID) REFERENCES member(memberID));
/*
uses insert to add currently checked out books
*/
insert into Currentloan values('00986845', '7839494', '09/28/2018', '12/28/2018');
insert into Currentloan values('00546283', '1405904', '08/12/2018', '11/12/2018');
insert into Currentloan values('00327889', '9839209', '09/05/2018', '12/05/2018');
insert into Currentloan values('00345674', '1239480', '08/04/2018', '10/12/2018');
insert into Currentloan values('00456742', '1893409', '07/04/2018', '10/04/2018');
insert into Currentloan values('00456742', '5467878', '07/05/2018', '10/05/2018');
insert into Currentloan values('00456742', '7839496', '07/05/2018', '10/05/2018');
insert into Currentloan values('00456742', '3848599', '07/05/2018', '10/05/2018');
insert into Currentloan values('00456742', '3049892', '07/05/2018', '10/05/2018');
insert into Currentloan values('00456742', '3234569', '07/05/2018', '10/05/2018');
insert into Currentloan Values('00986845', '3234568', '08/02/2018', '11/02/2018');
insert into Currentloan Values('00986845', '3049891', '08/02/2018', '11/02/2018');
insert into Currentloan Values('00986845', '3848598', '08/02/2018', '11/02/2018');
insert into Currentloan Values('00986845', '5467879', '08/02/2018', '11/02/2018');
insert into Currentloan Values('00986845', '3234570', '08/02/2018', '11/02/2018');
commit;
/* Generates table of books checked out in the past
Initializes 4 variables
deterines primary and foreign keys
*/
create table History
(memberID number(15),
bookID number(12),
loan_date varchar(10) Primary Key,
return_date varchar(10),
Foreign Key(bookID) References book(bookID),
Foreign Key(memberID) References member(memberID));
/*
uses insert to specify previously checked out books.
*/
insert into History values ('00728432', '5467878', '02/08/2017', '04/05/2017');
insert into History values ('00986845', '3234567', '09/12/2017', '10/10/2017');
insert into History values ('00728432', '3848598', '07/14/2016', '09/04/2017');
insert into History values ('00986845', '1239480', '11/14/2016', '01/26/2017');
insert into History values ('00456742', '3234569', '07/05/2016', '09/02/2016');
commit;
我认为我的查询是正确的，但我不断收到错误消息，指出我无法在Have子句中执行此操作
Select bookID, title, author, publish_yea, Min(publish_year)
from Book
group by bookID
having publish_year = Min(publish_year);
答案 0 :(得分：2)
我希望您的查询中显示错误消息mySubset。您在group by子句中缺少3个列名，应该这样写，以避免出现该错误：
Select bookID, title, author, publish_year, Min(publish_year) from Book group by bookID , TITLE, AUTHOR, PUBLISH_YEAR having publish_year = Min(publish_year);
但，该查询将无法实现您要查找的内容。您正在按唯一值（主键）分组，因此您可以获取该查询返回的表的每一行。
ORA-00979: not a GROUP BY expressionBOOKID | TITLE | AUTHOR | PUBLISH_YEAR | MIN(PUBLISH_YEAR) :------ | :------------------------------------- | :----------------- | :----------- | :---------------- 1893409 | Music Theory for Computer Musicians | Michael Hewitt | 2008 | 2008 3848598 | Java All-in-One For Dummies | Doug Lowe | 2017 | 2017 3234567 | Cirque du Freak: A Living Nightmare | Darren Shan | 2002 | 2002 7839495 | Guitar Zero | Gary Marcus | 2012 | 2012 3049891 | Oh, the Places Youll Go | Dr. Seuss | 1990 | 1990 3049893 | Oh, the Places Youll Go | Dr. Seuss | 1990 | 1990 7839496 | Guitar Zero | Gary Marcus | 2012 | 2012 3234568 | Cirque du Freak: A Living Nightmare | Darren Shan | 2002 | 2002 5467878 | Merriam_Websters Collegiate Dictionary | Merriam_Webster | 2003 | 2003 3049892 | Oh, the Places Youll Go | Dr. Seuss | 1990 | 1990 1239480 | DeathNote Black Edition Vol. 1 | Tsugumi Ohba | 2010 | 2010 9890304 | Oracle Essentials: Oracle Database 12c | Rick Greenwald | 2013 | 2013 3848599 | Java All-in-One For Dummies | Doug Lowe | 2017 | 2017 7839494 | Guitar Zero | Gary Marcus | 2012 | 2012 3234570 | Cirque du Freak: A Living Nightmare | Darren Shan | 2002 | 2002 5467879 | Merriam_Websters Collegiate Dictionary | Merriam_Webster | 2003 | 2003 1405904 | Oracle Database 12c PL/SQL Programming | Michael McLaughlin | 2014 | 2014 9839209 | Database Management Systems | Raghu Ramakrishnan | 2008 | 2008 3234569 | Cirque du Freak: A Living Nightmare | Darren Shan | 2002 | 2002
由Turbero给出，全球最早年份的子查询将起作用：
Select bookID, title, author, publish_year, Min(publish_year) from Book group by bookID, title, author, publish_year having publish_year = Min(publish_year)BOOKID | TITLE | AUTHOR | PUBLISH_YEAR :------ | :---------------------- | :-------- | :----------- 3049891 | Oh, the Places Youll Go | Dr. Seuss | 1990 3049892 | Oh, the Places Youll Go | Dr. Seuss | 1990 3049893 | Oh, the Places Youll Go | Dr. Seuss | 1990
或，或者可以使用窗口函数select bookID, title, author, publish_year
from Book
WHERE publish_year = (SELECT min(publish_year) FROM Book)
（或rank()）
dense_rank()BOOKID | TITLE | AUTHOR | PUBLISH_YEAR :------ | :---------------------- | :-------- | :----------- 3049891 | Oh, the Places Youll Go | Dr. Seuss | 1990 3049893 | Oh, the Places Youll Go | Dr. Seuss | 1990 3049892 | Oh, the Places Youll Go | Dr. Seuss | 1990
在此处在线查看上述所有查询 db <>小提琴here
答案 1 :(得分：1)
您选择的“ publish_yea”中有一个小错字。
我在https://sqliteonline.com/中预加载了您的数据库，然后以固定的错字运行查询：
select bookID, title, author, publish_year, Min(publish_year)
from Book
group by bookID
having publish_year = Min(publish_year);
有效。
但是该查询为您提供每个组的最小发布年份，而不是全局最小值。该查询可以做到：
select bookID, title, author, publish_year
from Book
WHERE publish_year = (SELECT min(publish_year) FROM Book)
答案 2 :(得分：0)
在Oracle 12C +中，您可以使用fetch first。假设只需要一行：
Select bookID, title, author, publish_yea, publish_year
from Book
order by publish_year desc
fetch first 1 rows only;
在早期版本中，另一个答案中提供的rank()解决方案可能是最好的方法。