Python Select From

从表中选取

如需从 MySQL 中的表中进行选择，请使用 "SELECT" 语句：

Instance

从表 "customers" 中选取所有记录，并显示结果：

import mysql.connector
mydb = mysql.connector.connect(
  host="localhost",
  user="yourusername",
  passwd="yourpassword",
  database="mydatabase"
)
mycursor = mydb.cursor()
mycursor.execute("SELECT * FROM customers")
myresult = mycursor.fetchall()
for x in myresult:
  print(x)

Run Instance

注释：我们用了 fetchall() 方法，该方法从最后执行的语句中获取所有行。

Tafara kafin:

Iyayi ka samu kafin: "SELECT" statement, kuma sanya sunan kafin:

Instance

Zai samu kafin:

import mysql.connector
mydb = mysql.connector.connect(
  host="localhost",
  user="yourusername",
  passwd="yourpassword",
  database="mydatabase"
)
mycursor = mydb.cursor()
mycursor.execute("SELECT name, address FROM customers")
myresult = mycursor.fetchall()
for x in myresult:
  print(x)

Run Instance

A samu da koyar da fetchone() method

Iyayi ka so kafin: fetchone() Method.

fetchone() Method za a yi aiki domin:

Instance

Zai samu kafin:

import mysql.connector
mydb = mysql.connector.connect(
  host="localhost",
  user="yourusername",
  passwd="yourpassword",
  database="mydatabase"
)
mycursor = mydb.cursor()
mycursor.execute("SELECT * FROM customers")
myresult = mycursor.fetchone()
print(myresult)

Run Instance