MySQL and Python Error : While I am trying to insert a row to my table from the Tkinter widget's(Entry, ComboBox, Radio Button), I'm getting an error

Question

当我尝试从 Tkinter 条目小部件（条目、组合框、单选按钮）向我的 table 插入一行时，出现以下错误：

ERROR 1136(21S01): Column count doesn't match value count at row 1.

列名：

Course, 
U_Id, 
Subject, 
Years, 
Semester, 
Student_Names, 
Roll_No, 
Gender, 
DOB, 
Email, 
Mobile, 
Address, 
Photo

其中U_Id是自增，

和值： crsVar.get(), sbVar.get(), yrsVar.get(), smVar.get(), nVar.get(), rollVar.get(), genVar.get(), dVar.get(), eVar.get(), mobVar.get(), adVar.get(), rdVar.get()

请帮帮我，这是我的代码

try:
    conn = mysql.connector.connect(host="localhost", username="root", 
    password="Sahil#12", database="attendancesystem")

    c = conn.cursor()
    c.execute('insert into `students_detail` values(crsVar.get(), sbVar.get(),
                        yrsVar.get(), smVar.get(), nVar.get(), rollVar.get(), 
                        genVar.get(), dVar.get(), eVar.get(), mobVar.get(),
                         adVar.get(), rdVar.get()))                          

    conn.commit()
    conn.close()
    messagebox.showinfo("Success", "Students details has been submitted", 
                                  parent=self.master)

except Exception as e:
    messagebox.showerror("Error", f"Due to {str(e)}")

Answer 1

这里的问题是由于自动递增 U_Id，您有 12 个值和 13 个列。您最好的选择是手动指定 table 的列，即：

c.execute('insert into `students_detail` (Course, Subject, Years, ...)  values(crsVar.get(), sbVar.get(),
                    yrsVar.get(), ...))

（请注意，您不在列或值中包含 U_Id 字段）。

还有其他选择：How to insert new row to database with AUTO_INCREMENT column without specifying column names? 但是指定 column/value 对是更可靠的解决方案。

Answer 2

这样试试：（使用%s避免SQL注入）

c.execute("INSERT INTO students_detail "                                      
    "(value1, value2, value3, value4, value5)"           
    "VALUES (%s, %s, %s, %s, %s) ",                                
    (                                                              
        widget[0].get(),                     #
        widget[1].get(),                     #
        widget[2].get(),                     #
        widget[3].get(),                     #
        widget[4].get(),                     #
    )) ## this widget.get() is only an example, you will need to change all these values

MySQL and Python Error : While I am trying to insert a row to my table from the Tkinter widget's(Entry, ComboBox, Radio Button), I'm getting an error

MySQL and Python Error : While I am trying to insert a row to my table from the Tkinter widget's(Entry, ComboBox, Radio Button), I'm getting an error

python

mysql

mysql-python