# Imports `datacontract import` creates a data contract from an existing source format. This is the fastest way to bootstrap a contract from a system you already have. ```bash # Import from a SQL DDL file datacontract import sql --source my_ddl.sql --dialect postgres # Save the result to a file datacontract import sql --source my_ddl.sql --dialect postgres --output datacontract.yaml ``` The [Snowflake](./snowflake.md), [BigQuery](./bigquery.md), [Amazon Redshift](./redshift.md), [Postgres](./postgres.md), [MySQL](./mysql.md), [SQL Server](./sqlserver.md), [Oracle](./oracle.md), [Trino](./trino.md), [Amazon Athena](./athena.md), [Amazon S3](./s3.md), [Google Cloud Storage](./gcs.md), [Azure Blob / ADLS](./adls.md), [Databricks](./databricks.md), and [AWS Glue](./glue.md) importers can connect directly to the live system and introspect your tables — no export files needed. Snowflake, BigQuery, Redshift, Postgres, MySQL, SQL Server, Oracle, Trino, Athena, S3, GCS, ADLS, and Databricks also generate a ready-to-test `servers` block, so `datacontract test` works right after the import. Run `datacontract import --help` to see the format-specific options (e.g. `datacontract import sql --help`). If a format you need is missing, [open an issue on GitHub](https://github.com/datacontract/datacontract-cli/issues). ## Example sources Each import page shows a runnable example: a small source file under [`examples/imports/`](https://github.com/datacontract/datacontract-cli/tree/main/examples/imports) and the data contract the CLI generates from it. Download a source and run the command on the page to reproduce the output. ## Available importers