As you may know, JSON is a hierarchical, relational, and structured data, and CSV is not. This approach shows how to use the selection method in combination with flattening node to convert the JSON file to CSV file. Using Projection to convert JSON to CSV file If you have the objects produced from JSON reader in hierarchical format, you must flatten out using LINQ projection and feed them to CSV writer to create the CSV file. This approach shows how to use the LINQ projection method to convert the JSON file to CSV file. Using POCO object to convert JSON to CSV file Then use this class as below to do the conversion of the file. Once the objects are populated with json values, using LINQ to compose the data for the desired CSV format. This approach is more type safe and fine control over the conversion process.

This approach shows you how to define POCO entity class and use them for the conversion process. Then on the CSV output end, using IgnoreDictionaryFieldPrefix to true to tell the CSV parse not to add parent node prefix to the output. Here turning off datetime parsing and treating as text by using JsonSerializationSettings(s => s.DateParseHandling = DateParseHandling.None). Then create an instance of ChoJSONReader object for reading orders.json file.

Configure(c => c.IgnoreDictionaryFieldPrefix = true)Ĭreate an instance of ChoCSVWriter for producing CSV ( orders.csv) file. JsonSerializationSettings(s => s.DateParseHandling = DateParseHandling.None) Using ( var r = new ChoJSONReader( ' orders.json') Sample JSON Data Input File (Orders.json) Let's begin by looking into a simple example of converting the below JSON input file. This framework library is written in C# using. You can convert large files as the conversion process is stream based, quite fast and with low memory footprint. It is very simple to use, with few lines of code, the conversion can be done. This tip talks about generating CSV file from JSON format using Cinchoo ETL framework. You can have data in your data warehouse in no time. It is a code based library for extracting data from multiple sources, transforming, and loading into your very own data warehouse in.

Download Cinchoo ETL binary (.NET Framework)ĬhoETL is an open source ETL (extract, transform and load) framework for.

Download Cinchoo ETL binary (.NET Core).

Nested json to csv python