How to get campaign data and push it to a database

[lakshmana deepesh]

Hi Everyone,

I am a beginner with adwords API and I am starting to feel that the adwords API is little overwhelming, in spite of the humungous documentation, i am unable to figure out which code to use to get aggregated campaign data, here are the problems i am facing, it would be great if you can help me out with these

1. Which code sample should I refer to get the campaign data from my account, I am looking to get the data in this format of headers
   campaign_id,campaign_name,clicks,impressions,cost,conversions
2. I have tried to get the campaign_performance_Report, but there are couple of problems I am facing with that 
   a) I get the keyword level information for clicks, impressions and etc
   b) I get the data either in a csv or sys.stdout print on my terminal. If I have to push it to the Database, I need to get something similar to a json but the method downloadereport() gives me only two options.(I think so)
3. How to change the date_filters I only have a string format in the selector that I am using from the sample.
4. how to get the list of all the client customer ids from the API through an MCC account.
   
   

I am using Python 3.6 for my code base, 
please let me know which sample codes to refer to get these reports