This post outlines some steps you would need to do to get Athena parsing your files correctly. Create a table in Athena from a csv file with header stored in S3. Once you have the file downloaded, create a new bucket in AWS S3. Have you thought of trying out AWS Athena to query your CSV files in S3? So, now that you have the file in S3, open up Amazon Athena. You’ll get an option to create a table on the Athena home page. The next step, creating the table, is more interesting: not only does Athena create the table, but it also learns where and how to read the data from my S3 … Once you execute query it generates CSV file. You’ll get an option to create a table on the Athena home page. I suggest creating a new bucket so that you can use that bucket exclusively for trying out Athena. For this post, we’ll stick with the basics and select the “Create table from S3 bucket data” option.So, now that you have the file in S3, open up Amazon Athena. My table when created is unable to skip the header information of my CSV file. Thanks to the Create Table As feature, it’s a single query to transform an existing table to a table backed by Parquet. Mine looks something similar to the screenshot below, because I already have a few tables. To demonstrate this feature, I’ll use an Athena table querying an S3 bucket with ~666MBs of raw CSV files (see Using Parquet on Athena to Save Money on AWS on how to create the table (and learn the benefit of using Parquet)). Results are also written as a CSV file to an S3 bucket; by default, results go to s3://aws-athena-query-results--region/. Query results can be downloaded from the UI as CSV files. Up to this point, I was thrilled with the Athena experience. Let's walk through it step by step. Click “Create Table,” and select “from S3 Bucket Data”: Upload your data to S3, and select “Copy Path” to get a link to it. Create External Table in Amazon Athena Database to Query Amazon S3 Text Files. You can change the bucket by clicking Settings in the Athena UI. Step3-Read data from Athena Query output files (CSV / JSON stored in S3 bucket) When you create Athena table you have to specify query output folder and data input location and file format (e.g. You’ll want to create a new folder to store the file in, even if you only have one file, since Athena … You’ll want to create a new folder to store the file in, even if you only have one file, since Athena … CSV, JSON, Avro, ORC, Parquet …) they can be GZip, Snappy Compressed. Select the database in the sidebar once it’s created. Click “Create Table,” and select “from S3 Bucket Data”: Upload your data to S3, and select “Copy Path” to get a link to it. I am trying to read csv file from s3 bucket and create a table in AWS Athena. Amazon Athena is a serverless AWS query service which can be used by cloud developers and analytic professionals to query data of your data lake stored as text files in Amazon S3 buckets folders. 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