> For the complete documentation index, see [llms.txt](https://docs.e6data.com/query-engine/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.e6data.com/query-engine/guides/table-formats/iceberg.md).

# Iceberg

e6data supports querying **Apache Iceberg** tables via external catalogs such as **Snowflake Open Catalog**, **AWS Glue**, and **Apache Polaris**. Iceberg is a high-performance, open table format built for large-scale analytics, with schema evolution, partitioning, and metadata versioning.

| Capability              | Iceberg v1    | Iceberg v2    |
| ----------------------- | ------------- | ------------- |
| **Copy-on-Write (CoW)** | Supported     | Supported     |
| **Merge-on-Read (MoR)** | Supported     | Supported     |
| **Position deletes**    | Supported     | Supported     |
| **Equality deletes**    | Not supported | Not supported |
| **Schema evolution**    | Supported     | Supported     |
| **Time Travel**         | Not supported | Not supported |
| **Hidden Partitioning** | Supported     | Supported     |
| **Partition evolution** | Supported     | Supported     |

**Note - Support for Iceberg v3 spec is in progress**

## Sample queries

```sql
-- List all tables in a catalog namespace
SHOW TABLES FROM glue_catalog.sales;

-- Query records from an Iceberg table
SELECT *
FROM glue_catalog.sales.q1_orders
WHERE total_amount > 1000;
```

## See also

* [Catalogs overview](/query-engine/guides/catalogs.md)
* [Table formats overview](/query-engine/guides/table-formats.md)
* [Iceberg REST Catalog](/query-engine/guides/catalogs/iceberg-rest-catalog.md)


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