將SQL Server查詢轉換為MySQL

Question

這是我用ms sql server編寫的簡單查詢...現在我需要將此數據庫轉換為mysql ...建議我執行此操作的最簡單方法...謝謝

CREATE TABLE DEPARTMENT
(
DEPARTMENT_ID int NOT NULL PRIMARY KEY,
DEPARTMENT_NAME VARCHAR(20) NOT NULL,
DEAPRTMENT_OFFICE_NO VARCHAR(20),
)
CREATE TABLE PREVIOUS_ACADEMIC_INFO
(
ACADEMIC_ID int NOT NULL PRIMARY KEY,
DEGREE_DESCRIPTION VARCHAR(50),
CERTIFICATION VARCHAR(30),
DURATION DATETIME
)
CREATE TABLE CLASS
(
CLASS_NAME VARCHAR(20) NOT NULL PRIMARY KEY,
CLASS_STRENGTH INT NOT NULL,
)
CREATE TABLE STUDENT
(
STUDENT_REGNO  INT  NOT NULL PRIMARY KEY,
STUDENT_FIRSTNAME VARCHAR(30) NOT NULL,
STUDENT_LASTNAME VARCHAR(20) NOT NULL,
STUDENT_FATHER_NAME VARCHAR(30) NOT NULL,
STUDENT_EMAIL VARCHAR(20),
STUDENT_MOBILE_NO VARCHAR(15),
STUDENT_PHONE_NO VARCHAR(15),
STUDENT_ADDRESS VARCHAR (40),
DEPARTMENT_ID INT   CONSTRAINT DEP_1 FOREIGN KEY(DEPARTMENT_ID)
 REFERENCES DEPARTMENT(DEPARTMENT_ID),
ACADEMIC_ID INT CONSTRAINT PREVIOUS_ACADEMIC_1 FOREIGN KEY(ACADEMIC_ID)
REFERENCES PREVIOUS_ACADEMIC_INFO(ACADEMIC_ID),
CLASS_NAME VARCHAR(20) CONSTRAINT CLASS_1 FOREIGN KEY (CLASS_NAME)
REFERENCES CLASS(CLASS_NAME)
)
CREATE TABLE FACULTY
(
FACULTY_ID INT  NOT NULL PRIMARY KEY,
FACULTY_NAME VARCHAR(20) NOT NULL,
FACULTY_FATHER_NAME VARCHAR(30) NOT NULL,
FACULTY_EMAIL VARCHAR(20),
FACULTY_ADDRESS VARCHAR(40) NOT NULL,
FACULTY_MOBILE_NO VARCHAR(30),
FACULTY_PHONE_NO VARCHAR(20),
FACULTY_QUALIFICATION VARCHAR(20),
DEPARTMENT_ID INT CONSTRAINT DEPARTEMNT_2 FOREIGN KEY (DEPARTMENT_ID)
REFERENCES DEPARTMENT(DEPARTMENT_ID),
ACADEMIC_ID INT CONSTRAINT ACADEMIC_1 FOREIGN KEY(ACADEMIC_ID)
REFERENCES PREVIOUS_ACADEMIC_INFO(ACADEMIC_ID)
)
CREATE TABLE USER1
(
USERNAME VARCHAR(20) NOT NULL,
USER_PASSWORD VARCHAR(6) NOT NULL,
USER_TYPE VARCHAR(20) NOT NULL,

)
CREATE TABLE COURSE
(
COURSE_ID INT NOT NULL PRIMARY KEY,
COURSE_NAME VARCHAR(20) NOT NULL,
COURSE_CREDIT_HR INT NOT NULL,
COURSE_DESCRIPTION VARCHAR(99),
)

CREATE TABLE ANNOUNCMENT
(
ANNOUNCMENT_ID int NOT NULL PRIMARY KEY,
ANNOUNCMENT_DESCRIPTION VARCHAR(50),
ANNOUNCMENT_TITLE VARCHAR(45)
)
CREATE TABLE FORUM
(
FORUM_ID int NOT NULL PRIMARY KEY,
FORUM_NAME VARCHAR(35) NOT NULL,
FORUM_DESCRIPTION VARCHAR(333),
FORUM_DISCUSSION VARCHAR(22),
POSTED_BY VARCHAR(34)
)
CREATE TABLE GRADE
(
LETTER_GRADE CHAR NOT NULL ,
PERCENTAGE FLOAT NOT NULL,
STUDENT_REGNO int CONSTRAINT STUDENT_5 FOREIGN KEY(STUDENT_REGNO)
REFERENCES STUDENT(STUDENT_REGNO),
COURSE_ID int CONSTRAINT COURSE_1 FOREIGN KEY(COURSE_ID)
REFERENCES COURSE(COURSE_ID)
)

CREATE TABLE TERM
(
TERM_START_DATE DATETIME NOT NULL,
TERM_END_DATE DATETIME NOT NULL,
student_regno int CONSTRAINT STUDENT_2 FOREIGN KEY(STUDENT_REGNO)
REFERENCES STUDENT(STUDENT_REGNO)
)

CREATE TABLE TEACHER_COURSE
(
AREA_OF_SPECILIZATION VARCHAR(30),
faculty_id int CONSTRAINT FACULTY_1 FOREIGN KEY(FACULTY_ID)
REFERENCES FACULTY(FACULTY_ID)
)

Answer 1

沒有簡單的解決方案-您需要手動進行手動轉換。 創建表的語法大致相同，您不需要更改的是數據類型和約束。 您可以在mysql參考手冊上查看所有數據類型和約束創建語法，該參考手冊位於： http : //dev.mysql.com/doc/refman/5.0/en/sql-syntax.html

編輯（基於評論）

另外，如果要從SQL SERVER遷移到mySql（而不僅僅是轉換查詢），請嘗試在此處查看： http : //dev.mysql.com/tech-resources/articles/migrating-from-microsoft html的

Migration Tools
There are a wide variety of tools available to help you migrate a SQL Server or Access database to MySQL. We'll look at several different tools so you can choose the one that best suits your needs. The tools we will look at will include the following:

MSSQL2MYSQL
Microsoft DTS
SQLyog
Access Export 
Text Import/Export 
SQLYog and the Microsoft DTS wizard offer graphical interfaces that can be used with both MSSQL and Microsoft Access to import tables into MySQL. MSSQL2MYSQL is a script by Michael Kofler that can convert not only the table structure and data, but converts the index information as well. If you use Microsoft Access you may not have access to the above tools, but you can use the data export features of Access.

Answer 2

基本語法應該起作用，但是有一個陷阱：

您需要將所有“內聯”外鍵約束移動到表末尾或ALTER TABLE中，因為InnoDB會忽略“附加”到列的內聯約束：

此外，InnoDB不識別或不支持將引用定義為列規范一部分的“內聯引用規范”（按照SQL標准定義）。 僅當作為單獨的FOREIGN KEY規范的一部分指定時，InnoDB才接受REFERENCES子句。

來自： http : //dev.mysql.com/doc/refman/5.5/en/innodb-foreign-key-constraints.html

所以，這句話

CREATE TABLE GRADE
(
  LETTER_GRADE CHAR NOT NULL ,
  PERCENTAGE FLOAT NOT NULL,
  STUDENT_REGNO int CONSTRAINT STUDENT_5 FOREIGN KEY(STUDENT_REGNO)
  REFERENCES STUDENT(STUDENT_REGNO),
  COURSE_ID int CONSTRAINT COURSE_1 FOREIGN KEY(COURSE_ID)
  REFERENCES COURSE(COURSE_ID)
)

需要成為：

CREATE TABLE GRADE
(
  LETTER_GRADE CHAR NOT NULL,
  PERCENTAGE FLOAT NOT NULL,
  STUDENT_REGNO int,
  COURSE_ID int,
  CONSTRAINT STUDENT_5 FOREIGN KEY(STUDENT_REGNO) REFERENCES STUDENT(STUDENT_REGNO),
  CONSTRAINT COURSE_1 FOREIGN KEY(COURSE_ID) REFERENCES COURSE(COURSE_ID)
)

注意在放置約束定義時存在細微差別。