问题
i am using sqlite3 to store values into database, My problem is i have created lineedits through which i extract values and store it to variables and pass this variables to insert query but i am getting above error at line values(?,?,?,?,?)......if i hard quote the values directly to variables it gets saved into database what is the mistake am i doing? please help.......here is my code
self.uname = self.le1.text()
self.passwd = self.le2.text()
self.permssn = self.le3.text()
self.queryCurs.execute('''CREATE TABLE IF NOT EXISTS USER
(USERNAME TEXT NOT NULL, PASSWORD TEXT NOT NULL, PERMISSION TEXT NOT NULL)''')
self.queryCurs.execute('''INSERT INTO USER(USERNAME, PASSWORD, PERMISSION)
VALUES(?,?,?)''',(self.uname,self.passwd,self.permssn))
print ('inserted row')
self.createDb.commit()
where am i going wrong?
回答1:
The method from where you're getting the text "le1.text()", doesn't stores the value in string format. I was getting the same error, sorted out that my data type was mismatched. I converted this value to string and it worked fine.
Also don't miss to add comma in the end because the execute query takes tulip.
self.queryCurs.execute('''INSERT INTO USER(USERNAME, PASSWORD, PERMISSION)
VALUES(?,?,?)''',(str(self.uname),str(self.passwd),str(self.permssn),))
回答2:
Values should be in touple (square brackets), like this:
self.queryCurs.execute("INSERT INTO USER(USERNAME, PASSWORD, PERMISSION) VALUES(?,?,?)",[self.uname, self.passwd, self.permssn])
Since you add values at the same order as columns in your table are, you don't really need them in your query, so this will also work:
self.queryCurs.execute("INSERT INTO USER VALUES(?,?,?)",[self.uname, self.passwd, self.permssn])
来源：https://stackoverflow.com/questions/21231264/python-sqlite-interfaceerror-error-binding-parameter-0-probably-unsupported