READ_PARQUET

A table-valued function (TVF) that accepts a URL to an Amazon bucket containing a Parquet file and credentials. READ_PARQUET returns a table with data from the specified Parquet file.

Syntax 

READ_PARQUET ( 
    url => <file_url>
    [, access_key_id => <access_key_id>]
    [, secret_access_key => <secret_access_key>]
    )

Parameters

Parameter Description Supported input types
<url> The location of the Amazon S3 bucket containing your files. The expected format is s3://{bucket_name}/{full_file_path}. TEXT
<access_key_id> The AWS key ID. TEXT
<secret_access_key> The AWS secret key. TEXT

The following apply:

  • The url can be passed as either the first positional parameter or a named parameter. For example, the following two queries will both read the same file:

      SELECT * FROM READ_PARQUET('s3://firebolt-publishing-public/help_center_assets/firebolt_sample_dataset/playstats/TournamentID=92/cc2a2a0b4e8b4fb39abf20a956e7cc3e-0.parquet');
  SELECT * FROM READ_PARQUET(url => 's3://firebolt-publishing-public/help_center_assets/firebolt_sample_dataset/playstats/TournamentID=92/cc2a2a0b4e8b4fb39abf20a956e7cc3e-0.parquet');

  • Credentials are optional.

  • If you provide either access_key_id or secret_access_key, you must provide both.

Return Type

The result is a table with data from the Parquet files. Columns are read and parsed using their inferred data types.

Example

Query: In the following example, the url is set as the first positional parameter and reads a Parquet file.

   SELECT * FROM READ_PARQUET('s3://firebolt-publishing-public/help_center_assets/firebolt_sample_dataset/playstats/TournamentID=92/cc2a2a0b4e8b4fb39abf20a956e7cc3e-0.parquet') LIMIT 5;

Returns:

GameID PlayerID Timestamp SelectedCar CurrentLevel CurrentSpeed CurrentPlayTime CurrentScore Event ErrorCode
1 845 2022-10-27 13:36:33 Solara 1 0 0 0 Brake NoError
1 845 2022-10-27 13:36:33 Solara 1 339 0.9872 2 RightTurn GraphicsFreeze
1 845 2022-10-27 13:36:34 Solara 1 288 1.9744 20 Tilt NoError
1 845 2022-10-27 13:36:35 Solara 1 260 2.9616 53 Block TextNotFound
1 845 2022-10-27 13:36:36 Solara 1 196 3.9488 81 FullSpeed NoError