我正在尝试使用csv文件中的值更新数据库,以下是我的代码：

import MysqLdb as mdb
import sys
import csv

con = None
command = ''
new_name_list = []
old_name_list = []
duplicates = []
update_list = []
file = 'csv_file.csv'
listReader = csv.reader(open(file,'r'))
for row in listReader:
    new_name_list.append(row)

try:

    con = mdb.connect('localhost','root','mypassword','mydb')
    con.autocommit(True)

    cur = con.cursor()
    cur.execute("SELECT fil_name FROM file WHERE fil_name like 'boy%' and fil_job_id=1")    

    numrows = int(cur.rowcount)

    for i in range(numrows):
        file_name = cur.fetchone()
    old_name_list.append(file_name[0])

    d = dict(new_name_list)

    for n in old_name_list:
        try:
            print n + " has been updated to " +  d[n]
            command = "UPDATE file SET fil_name='" + d[n] + "' WHERE fil_name='" + n + "'"
            cur.execute(command)
        except KeyError:
            duplicates.append(n)

except mdb.Error,e:

    print "Error %d: %s" % (e.args[0],e.args[1])
    sys.exit(1)

finally:    

    if con:    
        con.close()

每个打印出现大约需要2-3秒,这使我认为更新执行正在缓慢进行.我有很多要更新的值,这不应该是它应该执行的速度(假设我能够快速打印出d [n]的所有值)

反正加速更新了吗？

编辑：数据库正在使用InnoDB引擎