# v0.1 Reference Overview

> Reference index for pg_mooncake v0.1 DDL, Delta Lake metadata catalogs, GUC parameters, data loading, and external file queries.

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LLMS index: [llms.txt](/llms.txt)

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> [!WARNING] Legacy `pg_mooncake v0.1` Archive (Delta Lake Engine)
> This page documents **`pg_mooncake v0.1`**, which used direct `CREATE TABLE ... USING columnstore` DDL and Delta Lake storage. Starting in `v0.2` and PGSTY's **`v0.3.0`** release, `pg_mooncake` uses [`moonlink`](/docs/intro/moonlink/) real-time columnstore mirrors (`CALL mooncake.create_table` + `USING mooncake`) and Apache Iceberg v2. For current documentation, see [Introduction](/docs/intro/) and [v0.1 vs v0.2 & v0.3](/docs/intro/0.1-vs-0.2/).

- [v0.1 Columnstore DDL (`USING columnstore`)](/docs/v0.1/columnstore-ddl/)
- [v0.1 Querying Columnstore Outside Postgres (`mooncake.columnstore_tables`)](/docs/v0.1/columnstore-metadata/)
- [v0.1 GUC Configurations (`mooncake.maximum_memory`, `mooncake.maximum_threads`)](/docs/v0.1/configurations/)
- [v0.1 Load Data (`COPY` & `mooncake.read_parquet`)](/docs/v0.1/load-data/)
- [v0.1 Query External Files (`mooncake.read_parquet`, `mooncake.read_csv`, `iceberg_scan`, `delta_scan`)](/docs/v0.1/query-external-files/)
- [v0.1 Supported Queries & Query Shapes](/docs/v0.1/query-shapes/)

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Backlinks:

- [v0.1 Archive (Delta Lake)](/docs/v0.1/)