Output · Databases and cloud

S3 Sink

Saves a table to an S3 bucket as Parquet or CSV, or uploads a file another node wrote, such as a finished report.

Also known as: Upload to S3

How it works

Type the destination URI, such as s3://bucket/exports/sales.parquet, and pick an S3 credential from the vault; both are required. With a table on the input the node writes it in the chosen Format, parquet (the default) or csv, with an optional Compression for Parquet (snappy, zstd or gzip; blank uses the default) and Partition by columns that become folders under the URI. Overwrite existing is off by default, so an existing object stops the run. With a file on the input, such as the output of Write Report, Write Excel or Write CSV, the file is uploaded as is and the URI is its object key; format, compression and partitioning do not apply. Endpoint and Region are only needed for an S3-compatible service or to override the credential's region.

Inputs and outputs

Settings

{
  uri: string
  format: "parquet"|"csv"
  credentialName: string
  compression?: "snappy"|"zstd"|"gzip"
  overwrite: boolean
  partitionBy?: string[]
  endpoint?: string
  region?: string
}

Example

You publish the monthly PDF to a shared bucket. Wire Write Report into the node, set URI to s3://acme-reports/monthly/2026-10.pdf, pick the credential and turn Overwrite existing on so a re-run replaces the file.

More in Databases and cloud

• Write to DB — Loads the table into PostgreSQL or MySQL through a saved connection, or into a SQLite file. Stop if the table exists, replace it, or append rows.