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Connect PostgreSQL to your preprocessing pipeline, and use the Unstructured Ingest CLI or the Unstructured Ingest Python library to batch process all your documents and store structured outputs locally on your filesystem.

You will need:

The PostgreSQL prerequisites, which include the following settings.

The following video shows for example how to get these settings by using Amazon RDS for PostgreSQL.

  • A PostgreSQL instance. Install PostgreSQL.

  • The host name and port number for the instance. These values are in the postgresql.conf file’s listen_addresses and port settings. This file should be on the same machine as the instance. These values might also already be set as environment variables named PGHOST and PGPORT on the same machine as the instance.

  • A database in the instance. Create a database.

  • A table in the database. Create a table.

    The table’s schema must match the schema of the documents that Unstructured produces. Unstructured cannot provide a schema that is guaranteed to work in all circumstances. This is because these schemas will vary based on your source files’ types; how you want Unstructured to partition, chunk, and generate embeddings; any custom post-processing code that you run; and other factors.

    You can adapt the following table schema example for your own needs:

    See also:

  • A user in the database, and a password for the user. Create a user.

  • Database access for the user. Give database access to a user.

The PostgreSQL connector dependencies:

CLI, Python
pip install "unstructured-ingest[postgres]"

You might also need to install additional dependencies, depending on your needs. Learn more.

The following environment variables:

  • PGHOST - The host name, represented by --host (CLI) or host (Python).
  • PGPORT - The port number, represented by --port (CLI) or port (Python).
  • PGUSER - The username, represented by --username (CLI) or username (Python).
  • PGPASSWORD - The user’s password, represented by --password (CLI) or password (Python).
  • PGDATABASE - The name of the database, represented by --database (CLI) or database (Python).

These environment variables:

  • UNSTRUCTURED_API_KEY - Your Unstructured API key value.
  • UNSTRUCTURED_API_URL - Your Unstructured API URL.

Now call the Unstructured CLI or Python SDK. The destination connector can be any of the ones supported. This example uses the local destination connector:

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