#!/usr/bin/env python
# -*- coding:utf-8 -*-
import pymysql
# 創(chuàng)建連接
conn = pymysql.connect(host='127.0.0.1', port=3306, user='root', passwd='redhat', db='homework',charset='utf8')
# 創(chuàng)建游標(biāo)
cursor = conn.cursor()

# 執(zhí)行SQL
cursor.execute("select * from student")

#獲取剩余結(jié)果的第一行數(shù)據(jù)
#row_1 = cursor.fetchone()
#獲取前n行數(shù)據(jù)
#row_2 = cursor.fetchmany(3)
#獲取所有查詢數(shù)據(jù)
row_3 = cursor.fetchall()
print(row_3)
# 提交，不然無法保存新建或者修改的數(shù)據(jù)
conn.commit()

# 關(guān)閉游標(biāo)
cursor.close()
# 關(guān)閉連接
conn.close()

#! /usr/bin/env python
# -*- coding:utf-8 -*-
# __author__ = "Yu"
import pymysql

conn = pymysql.connect(host='127.0.0.1',port=3306, user='root', passwd='redhat', db='db3')
cursor = conn.cursor()
effect_row = cursor.executemany("insert into tb11(name,age) values(%s,%s)",
                [("yu","25"),("chao", "26")])
conn.commit()
cursor.close()
conn.close()
# 獲取自增id
new_id = cursor.lastrowid
print(new_id)

#! /usr/bin/env python
# -*- coding:utf-8 -*-
# __author__ = "Yu"
import pymysql

conn = pymysql.connect(host='127.0.0.1',port=3306, user='root', passwd='redhat', db='db3')

#游標(biāo)設(shè)置為字典類型
cursor = conn.cursor(cursor=pymysql.cursors.DictCursor)
cursor.execute("select * from tb11")

row_1 = cursor.fetchone()
print(row_1)
conn.commit()
cursor.close()
conn.close()