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使用说明
变量环境设置(数据库的链接信息存储在变量环境中)
# 设置环境变量 user 是用户名,password 是密码,192.168.1.10:22484 数据库地址
os.environ['SQLALCHEMY_DATABASE_URI'] = 'mysql+pymysql://user:password@192.168.1.10:22484/'
# 获取环境变量,如果不存在则使用默认值
value = os.environ.get('SQLALCHEMY_DATABASE_URI', 'default_value')
print(value+"DY_DSLP")
1、安装包模块
pip install mjsqltool
pip install --upgrade mjsqltool
2、引入包模块
from mjsqltool import SqlConnect,DataConvert,SqlExecute
SqlConnect
链接数据库,使用完毕后自动关闭
# 数据库名称
db = 'database'
with SqlConnect(db) as cn:
.....
DataConvert
数据转换 1、清洗数据 2、数据转SQL
convert = DataConvert()
df = pd.read_exce("jjjj.xlsx")
# 清洗数据
df = convert.convert_to_cleandata(df)
# 转成SQL语句 sql_type: 保存类型 有两个可选参数 'INSERT' 和 'REPLACE'
data = df
table_name = '测试表格'
sql_type='REPLACE'
query = convert.convert_to_sqlstring(data,table_name, sql_type)
SqlExecute
SqlExecute 将数据保存到MySQL SqlExecute 继承了 DataConvert,
from mjsqltool import SqlConnect,DataConvert,SqlExecute
import pandas as pd
with SqlConnect("MJ_DATA") as cn:
df = pd.read_excel(r"C:\Users\manji\Downloads\联盟订单.xlsx")
SqlExecute().data_cleanerSave_tosql(df,"测试表格",cn)
SqlExecute().data_cleanerSave_tosql
参数说明
sql_type='INSERT',
# sql_type='INSERT' 自动忽略重复主键记录 有两个可选参数 'INSERT' 和 'REPLACE'
datalong = None,
# datalong="only" 为 only时,只写入mysql中存在的数据字段
chunk_size=10000
# 每次最大写入数据的数据记录,例如90条数据,每次写入10条,则自动拆分成10次写入
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