Python Mysql_db对数据查询进行处理

引用自：https://www.cnblogs.com/itdyb/p/5700614.html

一、脚本如下

　　

#!/usr/bin/python2.7
# coding=utf-8
import time
from datetime import datetime
import MySQLdb

endtime = datetime.now()

def mysqlCmd():
    conn=MySQLdb.connect(host='rm-bp1h53532m383312xo.mysql.rds.aliyuncs.com',port=3306,db='py_sync',user='pycf',passwd='1qaz_2wsx',charset='utf8')
    #连接数据库
    cur=conn.cursor()
    sql = '''select
                start_date,
                status,
                taskid,
                tablename
            from
                sync_task_info
            where
                status=0
            order by
                start_date desc
            limit 5'''
    #执行查询命令
    cur.execute(sql)#按start_date字段降序查询。
    #打印查询行数
    print(cur.rowcount)
    #打印一行记录
    # rs = cur.fetchone()
    # print(rs)
    # #打印接下来两个记录记录
    # rs = cur.fetchmany(2)
    # print(rs)
    #打印接下来的所有记录
    rs = cur.fetchall()
    print(rs)
    print(len(rs))
    print(type(rs))
    for starttime in rs:
        starttime = datetime.strptime(starttime[0], "%Y-%m-%d %H:%M:%S")
        if (endtime-starttime).seconds/3600 < 4:
            print(1)
        else:
            pass
    conn.commit()
    cur.close()
    conn.close()
if __name__ == "__main__":
    mysqlCmd()