本文实例讲述了Python通过调用mysql存储过程实现更新数据功能。分享给大家供大家参考，具体如下：
一、需求分析
由于管理费率配置错误，生成订单的还本付息表和订单表的各种金额，管理费之间的计算都有错误，需要进行数据订正。为此，为了造个轮子，以后省很多功夫，全部用程序去修正，不接入人工。
二、带参数mysql 存储过程创建
1、更新订单付息表（t_order_rapay）
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drop procedure if exists update_t_order_rapay;delimiter $$create procedure update_t_order_rapay(IN orderNo varchar(64))begin declare t_order_no varchar(64); set t_order_no=orderNo; UPDATE t_order_repay SET total_amount=principal+interest+round(manage_amount*0.0808/0.052,3)+breach_amount, left_amount=principal+interest+round(manage_amount*0.0808/0.052,3)+breach_amount, left_repay_manager=round(manage_amount*0.0808/0.052,3), manage_amount=round(manage_amount*0.0808/0.052,3) WHERE order_no=t_order_no;end $$delimiter; |
2、更新订单表（t_order_info）
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drop procedure if exists update_t_order_info;delimiter $$create procedure update_t_order_info(IN orderNo varchar(64))begin declare t_order_no varchar(64); set t_order_no=orderNo; SELECT left_amount into @m1 from t_order_repay WHERE order_no=t_order_no ORDER BY plan_time LIMIT 1; UPDATE t_order_info set manage_cost_rate=0.0808, manage_cost=round(manage_cost*0.0808/0.052,3), left_amount=borrow_amount+interest_amount+manage_cost, next_amount_need=@m1 WHERE order_no=t_order_no;end $$delimiter; |
3、python 调用mysql 中的存储过程
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# encoding: utf-8import timeimport sysreload(sys)sys.setdefaultencoding('utf-8')time1 = time.time()import pandas as pdimport pymysql############################################从数据库读数据######################################################线上####################### 加上字符集参数，防止中文乱码# conn=pymysql.connect(# host="##########",# database="######",# user="####",# password="##########",# port=#######,# charset='utf8'# )# #############测试库####################### ## 加上字符集参数，防止中文乱码# conn=pymysql.connect(# host="172.16.34.32",# database="#########",# user="admin",# password="##############",# port=#########,# charset='utf8'# )#sql语句(安徽）# sqlcmd="""# SELECT order_no from t_order_info WHERE offline_org_no in(# 0032,0035,0036### ) and substr(create_time,1,10)>="2017-10-31"## and `status` in(105,106,107,108)## and manage_cost_rate=0.052### """#################sql语句（江苏）# sqlcmd2="""# SELECT order_no from t_order_info WHERE offline_org_no in(# 0002,0005,0006,0007,0008,0009,0010,0011,0012,0013,0014,0017,0018,0019,0025,0026,0027,0028,0030,0031,0033,0034# ) and substr(create_time,1,10)>="2017-10-31"# and `status` in(105,106,107,108)# and manage_cost_rate=0.052## """#利用pandas 模块导入mysql数据# data=pd.read_sql(sqlcmd2,conn)# print data### ###################更新order_rapay表# for each in data["order_no"]:# print each# # 创建游标# cursor = conn.cursor(cursor=pymysql.cursors.DictCursor)# #有参数存储过程# cursor.execute('call update_t_order_rapay(%s)',(each))# conn.commit()## print "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%"# #####################更新order_info表#################### for each in data["order_no"]:# print each## # 创建游标# cursor = conn.cursor(cursor=pymysql.cursors.DictCursor)# #有参数存储过程# cursor.execute('call update_t_order_info(%s)', (each))# conn.commit()### cursor.close()# print '调用存储过程完毕................'# conn.close()# time2=time.time()# print u'总共耗时：' + str(time2 - time1) + 's' |
希望本文所述对大家Python程序设计有所帮助。
原文链接：https://blog.csdn.net/u013421629/article/details/78479632
