python从数据库导出数据到excel
最近需要从数据库里导出一些数据到excel,刚开始我是使用下面的命令
select * from xxx where xxx into outfile 'xxx.xls'
结果报错
ERROR 1290 (HY000): The MySQL server is running with the --secure-file-priv option so it cannot execute this statement
除了这个错误,可能还会报access deny的错误,关于access deny的错误,有一篇博客讲的很详细:https://daizj.iteye.com/blog/2174972
请教同事后发现他们都是用脚本来导出数据,这样安全又方便,于是自己也整了一个,记录一下
1)安装easy_install
由于公司使用的是老旧的python2,所以还是使用easy)install来安装包,如果没有安装easy_install,需要安装easy_install
yum install python-setuptools
2)安装pymysql和xlwt
使用easy_install安装pymysql和xlwt
easy_install pymysql
easy_install xlwt
使用pip也可以安装
pip install pymysql
pip isntall xlwt
使用pip安装如果报错
Fatal error in launcher: Unable to create process using '"C:\Python27\python.exe" "C:\Python27\Scripts\pip.exe" install pymysql'
可以将在前面加上python2 -m (启动python环境)
python2 -m pip install pymysql
3)编写脚本
# --*-- coding:utf8 --*--
import pymysql, xlwt
def export_excel(table_name):
# 连接数据库,查询数据
host, user, passwd, db='127.0.0.1','root','123','xxx'
conn = pymysql.connect(user=user,host=host,port=3306,passwd=passwd,db=db,charset='utf8')
cur = conn.cursor()
sql = 'select * from %s' % table_name
cur.execute(sql) # 返回受影响的行数
fields = [field[0] for field in cur.description] # 获取所有字段名
all_data = cur.fetchall() # 所有数据
# 写入excel
book = xlwt.Workbook()
sheet = book.add_sheet('sheet1')
for col,field in enumerate(fields):
sheet.write(0,col,field)
row = 1
for data in all_data:
for col,field in enumerate(data):
sheet.write(row,col,field)
row += 1
book.save("%s.xls" % table_name)
if __name__ == '__main__':
export_excel('app1_book')
4)启动脚本导出数据
python2 export.py