我正在尝试运行基本的 sql 查询来更新名为 bartonhill 的数据库中 schoolnum 的值，使用 f 字符串将值放入

import sqlite3
name = [input('enter your firstname: ')]


conn = sqlite3.connect('revision.db')
c = conn.cursor()

# create table
c.execute('''CREATE TABLE IF NOT EXISTS bartonHill (
    firstName TEXT NOT NULL,
    lastName TEXT NOT NULL,
    schoolNum INTEGER NOT NULL PRIMARY KEY
)''')

conn.commit()

c.execute("INSERT INTO bartonHill VALUES ('Ollie','Burgess','20314')")
conn.commit()

new_number = tuple[(int(input('enter your new school number')))]
c.execute(f"UPDATE bartonHill set schoolNum = '{new_number}' WHERE firstName = '{name}'")
conn.commit
c.execute('SELECT lastName, schoolNum FROM bartonHill WHERE firstName = (?)',name)
print(c.fetchall())

但是，如果我输入我的名字 ollie（作为 firsname 存在于数据库中），则运行此代码会出现错误“ sqlite3.operationalerror：near“ollie”：语法错误”

我尝试更改 name 和 new_number 的数据类型，但这仅更改了错误

正确答案

还有很多需要改进的地方。我只做了一些小改动，你可以进一步改进。始终插入元组。更改主键是可能的，但不是那么容易，谷歌一下。首次初始化值后请求新值。也请仔细阅读上面的评论！

import sqlite3

conn = sqlite3.connect('revision.db')
c = conn.cursor()

# create table
c.execute('''create table if not exists bartonhill (
    id integer primary key autoincrement,
    schoolnum integer not null,
    firstname text not null,
    lastname text not null   
)''')
conn.commit()

c.execute("insert into bartonhill (schoolnum,firstname,lastname) values (?,?,?); ", (20314, 'ollie','burgess'))
conn.commit()

# ask for changes here
firstname = input('enter your firstname: ')
lastname = input('enter your lastname: ')
new_number = int(input('enter your new school number: '))

c.execute("update bartonhill set schoolnum = ? where firstname = ?;", (new_number, firstname))
conn.commit

c.execute("select * from bartonhill where firstname = ?;", (firstname,))
print(c.fetchall())

输出：

>>> enter your firstname: ollie
>>> enter your lastname: burgess
>>> enter your new school number: 20000
>>> [(1, 20000, 'ollie', 'burgess')]

或另一个选择：

c.execute("select schoolnum, lastname from bartonhill where firstname = ?;", (firstname,))
print(c.fetchone())

仅给您特定值：

(20000, 'Burgess')