pymysql如何为存储过程传递参数

Question

我正在尝试使用 csv 作为数据源并从 mysql 数据库调用存储过程来填充数据库。我目前收到异常：发生异常：(1318, 'Incorrect number of arguments for PROCEDURE mydb.update_servers; expected 3, got 0')

import pymysql
#import myconnutils
import datetime
import xlrd
import re
import os
import csv



#open csv file
with open('DBstatus.csv') as csvfile:
    reader = csv.DictReader(csvfile)
    for row in reader:
        print(row['Host Name'], row["OS Type"], row['Host Description'])





#create database connection

databaseConnection = pymysql.connect(host='localhost', user='xxx', password='xxx', db='mydb', cursorclass= pymysql.cursors.DictCursor)

try:
    cursorObject = databaseConnection.cursor()
    # parms = (row['Host Name'], row["OS Type"], row['Host Description'])

    # resultArgs = cursor.callproc('update_servers', inOutParams)
    cursorObject.execute("call update_servers")

    for result in cursorObject.fetchall():
        print(result)
except Exception as e:
    print("exception occured: {}".format (e))

finally:
    databaseConnection.close()

存储过程：

CREATE DEFINER=`root`@`%` PROCEDURE `update_servers`(
    IN p_name varchar(100),
    IN p_software_name varchar(100),
    IN p_description varchar(250)
    )
BEGIN   


        INSERT INTO servers (name, software_name, description) 
        VALUES (p_name, p_software_name, 
        p_description);
        SELECT LAST_INSERT_ID() into @recordId;




    SET @retVal = CAST(@recordId AS UNSIGNED);
    SELECT @retVal;  
END

Answer 1

您没有将任何参数传递给您的过程，即使它需要三个参数（p_name、p_software_name 和 p_description），因此出现错误。尝试：

params = row['Host Name'], row["OS Type"], row['Host Description']
cursorObject.execute("call update_servers(?, ?, ?)", params)

尽管我建议使用官方 MySQL connector which has a special cursor case for stored procedures as you already have it commented out - MySQLCursor.callproc()

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