pyodbc/sql新创建的表将被发送到主数据库，而不是指定的数据库

Question

我正在为班级做一个项目，在那里我使用Python在我的2016 SQL Server中创建一个数据库和表。我已经安装了pyodbc，并且能够在Python和我的SQL Server之间建立连接。但是，当我运行代码时，我可以创建“mydatabase”数据库……但是我要创建的后续表将进入“Master”数据库中的“tables”文件夹

我尝试过在同一个Python文件中创建数据库和表，以及只添加表。结果总是一样的——它进入主数据库，而不是“mydatabase”数据库。我已经在谷歌上搜索了很多次，似乎我已经正确地编写了代码；所以，我不知道现在该看什么

下面是在一个公平的swoop中创建数据库和表的代码

import pyodbc

mydb = pyodbc.connect('Driver={SQL Server};'
                      'Server=DESKTOP-5I015MM\SQLEXPRESS;'
                      'Trusted_Connection=yes;')

mydb.autocommit = True

mycursor = mydb.cursor()

mycursor.execute("CREATE DATABASE mydatabase")

Q1 = "CREATE TABLE Contact(id INT IDENTITY(1,1) PRIMARY KEY, \
        username varchar(255) NOT NULL, password varchar(255) NOT NULL, \
        firstName varchar(255) NOT NULL, middleName varchar(255) NOT NULL, \
        lastName varchar(255) NOT NULL, address varchar(255) NOT NULL, \
        officePhone varchar(15) NOT NULL, cellPhone varchar(15) NOT NULL, \
        email varchar(255) NOT NULL)"
mycursor.execute(Q1)

Q2 = "CREATE TABLE Manufacturer(name varchar(255) PRIMARY KEY, \
        registeredCountry varchar(255) NOT NULL, \
        contactPerson INT NOT NULL, \
        FOREIGN KEY(contactPerson) REFERENCES Contact(id))"
mycursor.execute(Q2)

Q3 = "CREATE TABLE TestLab(name varchar(255) PRIMARY KEY, \
        address varchar(255) NOT NULL, \
        contactPerson INT NOT NULL, \
        FOREIGN KEY(contactPerson) REFERENCES Contact(id))"
mycursor.execute(Q3)

Q4 = "CREATE TABLE Product(modelNumber varchar(255) PRIMARY KEY, \
        manufacturer varchar(255) NOT NULL, \
        maufacturingDate date NOT NULL, \
        prodLength decimal(5,2) NOT NULL, \
        prodWidth decimal(5,2) NOT NULL, \
        cellTechnology varchar(255) NOT NULL, \
        cableType varchar(255) NOT NULL, \
        maximumSystemVoltage varchar(255) NOT NULL, \
        ratedVoc decimal(3,1) NOT NULL, \
        ratedIsc decimal(3,2) NOT NULL, \
        ratedVmp decimal(3,1) NOT NULL, \
        ratedImp decimal(3,2) NOT NULL, \
        ratedPmp decimal(4,1) NOT NULL, \
        ratedFf decimal(3,1) NOT NULL, \
        FOREIGN KEY(manufacturer) REFERENCES Manufacturer(name))"
mycursor.execute(Q4)

Q5 = "CREATE TABLE TestResults(dataSource varchar(255) NOT NULL, \
        modelNumber varchar(255) NOT NULL, \
        reportingCondition varchar(255) NOT NULL, \
        testSequence varchar(255) NOT NULL, \
        testDate date NOT NULL, \
        isc decimal(3,2) NOT NULL, \
        voc decimal(3,1) NOT NULL, \
        imp decimal(3,2) NOT NULL, \
        vmp decimal(3,1) NOT NULL, \
        pmp decimal(4,1) NOT NULL, \
        ff decimal(3,1) NOT NULL, \
        noct decimal(3,1) NOT NULL, \
        PRIMARY KEY(dataSource, modelNumber), \
        FOREIGN KEY(dataSource) REFERENCES TestLab(name), \
        FOREIGN KEY(modelNumber) REFERENCES Product(modelNumber))"
mycursor.execute(Q5)

下面是在“mydatabase”数据库中创建表的代码，如果数据库已经存在于SQL中

import pyodbc

mydb = pyodbc.connect('Driver={SQL Server};'
                      'Server=DESKTOP-5I015MM\SQLEXPRESS;'
                      'Database=mydatabase;'
                      'Trusted_Connection=yes;')

mydb.autocommit = True

mycursor = mydb.cursor()

Q1 = "CREATE TABLE Contact(id INT IDENTITY(1,1) PRIMARY KEY, \
        username varchar(255) NOT NULL, password varchar(255) NOT NULL, \
        firstName varchar(255) NOT NULL, middleName varchar(255) NOT NULL, \
        lastName varchar(255) NOT NULL, address varchar(255) NOT NULL, \
        officePhone varchar(15) NOT NULL, cellPhone varchar(15) NOT NULL, \
        email varchar(255) NOT NULL)"
mycursor.execute(Q1)

Q2 = "CREATE TABLE Manufacturer(name varchar(255) PRIMARY KEY, \
        registeredCountry varchar(255) NOT NULL, \
        contactPerson INT NOT NULL, \
        FOREIGN KEY(contactPerson) REFERENCES Contact(id))"
mycursor.execute(Q2)

Q3 = "CREATE TABLE TestLab(name varchar(255) PRIMARY KEY, \
        address varchar(255) NOT NULL, \
        contactPerson INT NOT NULL, \
        FOREIGN KEY(contactPerson) REFERENCES Contact(id))"
mycursor.execute(Q3)

Q4 = "CREATE TABLE Product(modelNumber varchar(255) PRIMARY KEY, \
        manufacturer varchar(255) NOT NULL, \
        maufacturingDate date NOT NULL, \
        prodLength decimal(5,2) NOT NULL, \
        prodWidth decimal(5,2) NOT NULL, \
        cellTechnology varchar(255) NOT NULL, \
        cableType varchar(255) NOT NULL, \
        maximumSystemVoltage varchar(255) NOT NULL, \
        ratedVoc decimal(3,1) NOT NULL, \
        ratedIsc decimal(3,2) NOT NULL, \
        ratedVmp decimal(3,1) NOT NULL, \
        ratedImp decimal(3,2) NOT NULL, \
        ratedPmp decimal(4,1) NOT NULL, \
        ratedFf decimal(3,1) NOT NULL, \
        FOREIGN KEY(manufacturer) REFERENCES Manufacturer(name))"
mycursor.execute(Q4)

Q5 = "CREATE TABLE TestResults(dataSource varchar(255) NOT NULL, \
        modelNumber varchar(255) NOT NULL, \
        reportingCondition varchar(255) NOT NULL, \
        testSequence varchar(255) NOT NULL, \
        testDate date NOT NULL, \
        isc decimal(3,2) NOT NULL, \
        voc decimal(3,1) NOT NULL, \
        imp decimal(3,2) NOT NULL, \
        vmp decimal(3,1) NOT NULL, \
        pmp decimal(4,1) NOT NULL, \
        ff decimal(3,1) NOT NULL, \
        noct decimal(3,1) NOT NULL, \
        PRIMARY KEY(dataSource, modelNumber), \
        FOREIGN KEY(dataSource) REFERENCES TestLab(name), \
        FOREIGN KEY(modelNumber) REFERENCES Product(modelNumber))"
mycursor.execute(Q5)

Answer 1

争吵之后 Mycursor.execute("CREATE DATABASE mydatabase") 添加 mycursor.execute("USE mydatabase")