如何将 sql 查询结果保存到 pandas 中的 csv

Question

I wrote a query in the data frame and want to save it in CSV file I tried this code and didn't work

q1 = "SELECT * FROM  df1 join df2 on df1.Date = df2.Date" 
df = pd.read_sql(q1,None)
df.to_csv('data.csv',index=False)

Answer 1

You can try following code:

import pandas as pd

df1 = pd.read_csv("Insert file path")
df2 = pd.read_csv("Insert file path")

df1['Date'] = pd.to_datetime(df1['Date'] ,errors = 'coerce',format = '%Y-%m-%d')
df2['Date'] = pd.to_datetime(df2['Date'] ,errors = 'coerce',format = '%Y-%m-%d')

df = df1.merge(df2,how='inner', on ='Date')
df.to_csv('data.csv',index=False)

This should solve your problem.