本文例項講述了Python通過呼叫mysql儲存過程實現更新資料功能。分享給大家供大家參考，具體如下：

一、需求分析

由於管理費率配置錯誤，生成訂單的還本付息表和訂單表的各種金額，管理費之間的計算都有錯誤，需要進行資料訂正。為此，為了造個輪子，以後省很多功夫，全部用程式去修正，不接入人工。

二、帶引數mysql 儲存過程建立

1、更新訂單付息表（t_order_rapay）

drop procedure if exists update_t_order_rapay;
delimiter $$
create procedure update_t_order_rapay(IN orderNo varchar(64))
begin
  declare t_order_no varchar(64);
  set t_order_no=orderNo;
  UPDATE t_order_repay
  SET total_amount=principal+interest+round(manage_amount*0.0808/0.052,3)+breach_amount,left_amount=principal+interest+round(manage_amount*0.0808/0.052,left_repay_manager=round(manage_amount*0.0808/0.052,3),manage_amount=round(manage_amount*0.0808/0.052,3)
  WHERE order_no=t_order_no;
end $$
delimiter;

2、更新訂單表（t_order_info）

drop procedure if exists update_t_order_info;
delimiter $$
create procedure update_t_order_info(IN orderNo varchar(64))
begin
  declare t_order_no varchar(64);
  set t_order_no=orderNo;
  SELECT left_amount into @m1 from t_order_repay WHERE order_no=t_order_no ORDER BY plan_time LIMIT 1;
  UPDATE t_order_info
  set manage_cost_rate=0.0808,manage_cost=round(manage_cost*0.0808/0.052,left_amount=borrow_amount+interest_amount+manage_cost,next_amount_need=@m1
  WHERE order_no=t_order_no;
end $$
delimiter;

3、python 呼叫mysql 中的儲存過程

# encoding: utf-8
import time
import sys
reload(sys)
sys.setdefaultencoding('utf-8')
time1 = time.time()
import pandas as pd
import pymysql
############################################從資料庫讀資料###########################################
###########線上######################
# 加上字符集引數，防止中文亂碼
# conn=pymysql.connect(
#  host="##########",#  database="######",#  user="####",#  password="##########",#  port=#######,#  charset='utf8'
# )
# #############測試庫######################
# ## 加上字符集引數，防止中文亂碼
# conn=pymysql.connect(
#  host="172.16.34.32",#  database="#########",#  user="admin",#  password="##############",#  port=#########,#  charset='utf8'
# )
#sql語句(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語句（江蘇）
# 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,10)>="2017-10-31"
# and `status` in(105,108)
# and manage_cost_rate=0.052
#
# """
#利用pandas 模組匯入mysql資料
# data=pd.read_sql(sqlcmd2,conn)
# print data
#
#
# ###################更新order_rapay表
# for each in data["order_no"]:
#   print each
#   # 建立遊標
#   cursor = conn.cursor(cursor=pymysql.cursors.DictCursor)
#   #有引數儲存過程
#   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
#
#   # 建立遊標
#   cursor = conn.cursor(cursor=pymysql.cursors.DictCursor)
#   #有引數儲存過程
#   cursor.execute('call update_t_order_info(%s)',(each))
#   conn.commit()
#
#
# cursor.close()
# print '呼叫儲存過程完畢................'
# conn.close()
# time2=time.time()
# print u'總共耗時：' + str(time2 - time1) + 's'

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希望本文所述對大家Python程式設計有所幫助。