Amazon Athena is a serverless, interactive analytics service built on open-source frameworks, supporting open-table and file formats. Athena provides a simplified, flexible way to analyze petabytes of data where it lives. Analyze data or build applications from an Amazon Simple Storage Service (S3) data lake and 30 data sources, including on-premises data sources or other cloud systems using SQL or Python. Athena is built on open-source Trino and Presto engines and Apache Spark frameworks, with no provisioning or configuration effort required.
This notebook goes over how to load documents from AWS Athena.

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Setting up

Follow instructions to set up an AWS account. Install a python library: 
! pip install boto3

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Example

from langchain_community.document_loaders.athena import AthenaLoader

database_name = "my_database"
s3_output_path = "s3://my_bucket/query_results/"
query = "SELECT * FROM my_table"
profile_name = "my_profile"

loader = AthenaLoader(
    query=query,
    database=database_name,
    s3_output_uri=s3_output_path,
    profile_name=profile_name,
)

documents = loader.load()
print(documents)
Example with metadata columns 
database_name = "my_database"
s3_output_path = "s3://my_bucket/query_results/"
query = "SELECT * FROM my_table"
profile_name = "my_profile"
metadata_columns = ["_row", "_created_at"]

loader = AthenaLoader(
    query=query,
    database=database_name,
    s3_output_uri=s3_output_path,
    profile_name=profile_name,
    metadata_columns=metadata_columns,
)

documents = loader.load()
print(documents)