Why my code gives error: "sqlite3.OperationalError: no such column: "?

Question

为什么我的程序给我错误提示我的 Sqlite3 Tasks-table 中不存在该列？这是我的代码：

class Db:

    conn = sqlite3.connect('database.db')
    cursor = conn.cursor()

    def create_table(self):
        create_Tasks_table = '''CREATE TABLE Tasks (
                    id INTEGER PRIMARY KEY,
                    title TEXT NOT NULL,
                    notes TEXT,
                    deadline TEXT, 
                    state INTEGER);'''
        self.cursor.execute(create_Tasks_table)
        self.conn.commit()


    def add_task(self, title, notes, deadline):
        state = 0
        add_to_Tasks_table = """INSERT INTO Tasks (title, notes, deadline, state) values (?, ?, ?, ?), (title, notes, deadline, state)"""
        self.cursor.execute(add_to_Tasks_table)
        self.conn.commit()

if __name__ == "__main__":
    db = Db()
    db.create_table()
    db.add_task("title1", "Note1", "2021-10-30 18:00:00")

我与 DB Browser for SQlite 确认 table 已正确创建且列名正确，如图所示：

编辑：这是完整的错误：

Traceback (most recent call last):
  File "C:\Users\User\PycharmProjects\project\mytest.py", line 91, in <module>
    db.add_task("title1", "Note1", "2021-10-30 18:00:00")
  File "C:\Users\User\PycharmProjects\project\mytest.py", line 36, in add_task
    self.cursor.execute(add_to_Tasks_table)
sqlite3.OperationalError: no such column: title

Answer 1

您的代码的问题在于您包含了包含您在 sql 语句中传递的参数的元组。
它应该作为 cursor.execute():

的第二个参数

def add_task(self, title, notes, deadline):
    state = 0
    add_to_Tasks_table = "INSERT INTO Tasks (title, notes, deadline, state) values (?, ?, ?, ?)"
    self.cursor.execute(add_to_Tasks_table, (title, notes, deadline, state))
    self.conn.commit()

Why my code gives error: "sqlite3.OperationalError: no such column: "?

Why my code gives error: "sqlite3.OperationalError: no such column: "?

python

sqlite

sql-insert