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所以，这是我的代码。当我尝试在学校提供的引擎中编译它时，我遇到了几个错误，并且每次运行它时它们都会发生变化，但我目前拥有的是这样的：

第 123 行的 ERROR 1064 (42000)：您的 SQL 语法有错误；查看与您的 MySQL 服务器版本相对应的手册，了解在 '9:30, 'L210', 103, 15), (86, 25, 2, 6/10/2007 9:30, 'L210' 附近使用的正确语法, 107, 15), (89, 25, 5' 在第 2 行

我已经尝试过删除这些空间，但这没有任何区别。这与我获取信息的顺序有什么关系吗？或者是别的什么？

我也不确定表格是否在第一步中下降。

/*Step One: Drop Tables*/
DROP TABLE IF EXISTS Student;
DROP TABLE IF EXISTS Zipcode;
DROP TABLE IF EXISTS Instructor;
DROP TABLE IF EXISTS Enrollment;
DROP TABLE IF EXISTS Sections;
DROP TABLE IF EXISTS Course;


/*Step Two: Create Tables*/
CREATE TABLE Zipcode
(
zip             int(11), 
city            varchar(25)     NOT NULL,  
state           varchar(2)      NOT NULL,
PRIMARY KEY (zip)
);

CREATE TABLE Student
(
student_ID          int(6)          UNIQUE,
salutation          varchar(5), 
first_name          varchar(25)     NOT NULL, 
last_name           varchar(25)     NOT NULL, 
street_address      varchar(50), 
phone               int(15)         NOT NULL, 
employer            varchar(50) , 
registration_date   date            NOT NULL, 
zip                 int(11),
PRIMARY KEY (student_ID),
FOREIGN KEY (zip) REFERENCES Zipcode (zip)
);

CREATE TABLE Course
(
    course_ID           int(6)          UNIQUE,
    description         varchar(50)     NOT NULL,
    cost                dec(8,2)        NOT NULL,
    prerequisite        int(6),
    PRIMARY KEY (course_ID),
    FOREIGN KEY (prerequisite) REFERENCES Course (course_ID)
);

CREATE TABLE Instructor
(
Instructor_ID   int(6)              UNIQUE,
salutation      varchar(5), 
first_name      varchar(25)         NOT NULL, 
last_name       varchar(25)         NOT NULL, 
street_address  varchar(50), 
zip             int(11)             NOT NULL,
PRIMARY KEY (Instructor_ID),
FOREIGN KEY (zip) REFERENCES zipcode (zip)
);

CREATE TABLE Sections
(
section_ID          int(8)          UNIQUE,
course_id           int(6)          NOT NULL,
course_section_num  int(6)          NOT NULL,
start_date_time     datetime        NOT NULL,
location            varchar(10),
instructor_ID       int(6)          NOT NULL,
capacity            int(3),
PRIMARY KEY (section_ID),
FOREIGN KEY (instructor_ID) REFERENCES Instructor (instructor_ID),
FOREIGN KEY (course_ID) REFERENCES Course (course_ID)   
);

CREATE TABLE Enrollment
(
student_ID          int(6)          UNIQUE,
section_ID          int(8)          UNIQUE,
enroll_date         datetime        NOT NULL,
final_grade         char(1),
PRIMARY KEY (section_ID, student_ID),
FOREIGN KEY (section_ID) REFERENCES sections (section_ID),
FOREIGN KEY (student_ID) REFERENCES student (student_ID)
);


/*Step Three: Insert Rows*/
INSERT INTO Zipcode VALUES
(7024, 'Ft. Lee', 'NJ'),
(7047, 'North Bergen', 'NJ'),
(10005, 'New York', 'NY'),
(10015, 'New York', 'NY'),
(10025, 'New York', 'NY'),
(10035, 'New York', 'NY'),
(11419, 'Richmond Hill', 'NY'),
(11435, 'Jamaica', 'NY');

INSERT INTO Student VALUES
(102, 'Mr.', 'Fred', 'Crocitto', '101-09 120th St.', 718-555-5555, 'Albert Hildegard Co.', 1/22/2007, 11419),
(103, 'Ms.', 'J.', 'Landry', '7435 Boulevard East #45', 201-555-5555, 'Albert Hildegard Co.', 1/22/2007, 7047),
(104, 'Ms.', 'Laetia', 'Enison', '144-61 87th Ave', 718-555-5555, 'Albert Hildegard Co.', 1/22/2007, 11435),
(105, 'Mr.', 'Angel', 'Moskowitz', '320 John St.', 201-555-5555, 'Alex. & Alexander', 1/22/2007, 7024),
(163, 'Ms.', 'Nicole', 'Gillen', '4301 N Ocean #103', 904-555-5555, 'Oil of America Corp.', 2/2/2007, 10025),
(223, 'Mr.', 'Frank', 'Pace', '13 Burlington Dr.', 203-555-5555, 'Board Utilities', 2/8/2007, 10025),
(399, 'Mr.', 'Jerry', 'Abdou', '460 15th St. #4', 718-555-5555, 'Health Mgmt.Systems', 2/23/2007, 10025);

INSERT INTO Course VALUES
(330, 'Network Administration', 1195, 130),
(310, 'Operating Systems', 1195, NULL),
(142, 'Project Management', 1195, 20),
(140, 'Systems Analysis', 1195, 20),
(130, 'Intro to Unix', 1195, 310),
(25, 'Intro to Programming', 1195, 140),
(20, 'Intro to Information Systems', 1195, NULL);

INSERT INTO Instructor VALUES
(101, 'Mr.', 'Fernand', 'Hanks', '100 East 87th', 10015),
(102, 'Mr.', 'Tom', 'Wojick', '518 West 120th', 10025),
(103, 'Ms.', 'Nina', 'Schorin', '210 West 101st', 10025),
(104, 'Mr.', 'Gary', 'Pertez', '34 Sixth Ave', 10035),
(105, 'Ms.', 'Anita', 'Morris', '34 Maiden Lane', 10015),
(106, 'Rev.', 'Todd', 'Smythe', '210 West 101st', 10025),
(107, 'Dr.', 'Marilyn', 'Frantzen', '254 Bleeker', 10005);

INSERT INTO Sections VALUES
(81, 20, 2, 7/24/2007 9:30, 'L210', 103, 15),
(86, 25, 2, 6/10/2007 9:30, 'L210', 107, 15),
(89, 25, 5, 5/15/2007 9:30, 'L509', 103, 25),
(92, 25, 8, 6/13/2007 9:30, 'L509', 106, 25),
(104, 330, 1, 7/14/2007 10:30, 'L511', 104, 25),
(119, 142, 1, 7/14/2007 9:30, 'L211', 103, 25),
(155, 122, 4, 5/4/2007 9:30,  'L210', 107, 15);

INSERT INTO Enrollment VALUES
(102, 86, 1/30/2007, NULL, 'B'),
(102, 89, 1/30/2007, 92,'A'),
(103, 81, 1/30/2007, NULL),
(104, 81, 1/30/2007, NULL, 'A'),
(163, 92, 2/10/2007, NULL),
(223, 104, 2/16/2007, NULL,'C'),
(223, 119, 2/16/2007, NULL);


/*Step Four: Select Statements*/
SELECT * FROM Student;
SELECT * FROM Zipcode;
SELECT * FROM Instructor;
SELECT * FROM Course;
SELECT * FROM Sections;
SELECT * FROM Enrollment;
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1 回答 1

0

错误消息标识的问题是日期时间文字，此处：

 INSERT INTO Sections VALUES
 (81, 20, 2, 7/24/2007 9:30, 'L210', 103, 15)
             ^^^^^^^^^^^^^^

要获取分配给日期时间列的值，您可以这样做：

 (81, 20, 2, '2007-07-24 09:30', 'L210', 103, 15)
             ^^^^^^^^^^^^^^^^^^

日期时间文字应该用单引号括起来，并以类似'YYYY-MM-DD'or的格式表示'YYYY-MM-DD HH:MI:SS'。

（也可以传递数字十进制值。但没有人真正这样做。只需使用正确格式的字符串文字。我相信新版本的 MySQL 比早期版本更宽松，关于月份两个字符的严格性, 和两个字符代表天, 并使用破折号以外的分隔符. 我认为也可以省略日期时间的分隔符

我认为 MySQL 也会接受这样的东西：

   '20070724093000'

但同样，没有人真正做到这一点。只需将值作为标准'YYYY-MM-DD HH:MI:SS'格式的字符串提供。

于 2016-03-16T23:17:17.060 回答