Python SQL fetchall() 不返回任何内容

Question

I am trying to fetch data from my table with this command:

SELECT userPassword FROM Coins.UserInfo WHERE username = 'Hello';

I have run this in the SQL runner on the database website, and it works fine. However, when I run it through python:

cursor.execute("SELECT userPassword FROM Coins.UserInfo WHERE username = 'Hello';")
print(cursor.fetchall())

It returns an empty list.

Does anyone know why this is happening?

Answer 1

That's the expected behavior if there is no user named "Hello".