Question

我试图用尝试修复的名称和电话创建一个数据库，但是它随时会重放给我：

File "exm0.py", line 14, in <module>
    cursor.execute("""INSERT INTO Employee VALUES({0}, {1})""".format(k, v))
sqlite3.OperationalError: no such column: dani

代码：

from user_names import *
import sqlite3

# user_names.py
names = ["dani", "eric", "dinna", "tamir", "edan", "daniel", "tomer", 
"noa", "shalev", "tom", "shir"]
phones = ["0432", "5415166255", "61467254", "6146758", "5889482"]

connection = sqlite3.connect("")
cursor = connection.cursor()


cursor.execute("""CREATE TABLE Employee(Name text, Phone int)""")
acc = {}

for k, v in zip(names, phones):
    #acc[k] = v
    cursor.execute("""INSERT INTO Employee VALUES({0}, 
{1})""".format(k, v))

Answer 1

请勿进行字符串格式化，请使用带占位符的预备语句。

flow-typed

您甚至不需要循环，可以使用declare export type Store<S, A, D = Dispatch<A>> = { // rewrite MiddlewareAPI members in order to get nicer error messages (intersections produce long messages) dispatch: D, getState(): S, subscribe(listener: () => void): () => void, replaceReducer(nextReducer: Reducer<S, A>): void, };方法进行迭代：

for k, v in zip(names, phones):
    #acc[k] = v
    cursor.execute("INSERT INTO Employee VALUES(?, ?)", (k, v))

Answer 2

我不熟悉您所使用的准备好的语句的样式。另外，最佳实践是始终指定插入目标的列名。试试这个版本：

for k, v in zip(names, phones):
    #acc[k] = v
    cursor.execute("INSERT INTO Employee (Name, Phone) VALUES(?,?)", (k, v))

Answer 3

您正在将值格式化为语句的文本而不引用它们。因此，数据库将它们解释为列名，从而因您看到的错误而失败。相反，您可以只传递参数数组作为execute函数的第二个参数，并让驱动程序库为您完成繁重的工作：

cursor.execute("INSERT INTO Employee VALUES(?, ?)", [k, v])

插入失败“ OperationalError：没有这样的列”

3 个答案: