mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-02 04:22:03 +00:00
54 lines
1.6 KiB
Markdown
54 lines
1.6 KiB
Markdown
---
|
|
slug: /en/engines/table-engines/integrations/deltalake
|
|
sidebar_position: 40
|
|
sidebar_label: DeltaLake
|
|
---
|
|
|
|
# DeltaLake Table Engine
|
|
|
|
This engine provides a read-only integration with existing [Delta Lake](https://github.com/delta-io/delta) tables in Amazon S3.
|
|
|
|
## Create Table
|
|
|
|
Note that the Delta Lake table must already exist in S3, this command does not take DDL parameters to create a new table.
|
|
|
|
``` sql
|
|
CREATE TABLE deltalake
|
|
ENGINE = DeltaLake(url, [aws_access_key_id, aws_secret_access_key,])
|
|
```
|
|
|
|
**Engine parameters**
|
|
|
|
- `url` — Bucket url with path to the existing Delta Lake table.
|
|
- `aws_access_key_id`, `aws_secret_access_key` - Long-term credentials for the [AWS](https://aws.amazon.com/) account user. You can use these to authenticate your requests. Parameter is optional. If credentials are not specified, they are used from the configuration file.
|
|
|
|
Engine parameters can be specified using [Named Collections](/docs/en/operations/named-collections.md).
|
|
|
|
**Example**
|
|
|
|
```sql
|
|
CREATE TABLE deltalake ENGINE=DeltaLake('http://mars-doc-test.s3.amazonaws.com/clickhouse-bucket-3/test_table/', 'ABC123', 'Abc+123')
|
|
```
|
|
|
|
Using named collections:
|
|
|
|
``` xml
|
|
<clickhouse>
|
|
<named_collections>
|
|
<deltalake_conf>
|
|
<url>http://mars-doc-test.s3.amazonaws.com/clickhouse-bucket-3/</url>
|
|
<access_key_id>ABC123<access_key_id>
|
|
<secret_access_key>Abc+123</secret_access_key>
|
|
</deltalake_conf>
|
|
</named_collections>
|
|
</clickhouse>
|
|
```
|
|
|
|
```sql
|
|
CREATE TABLE deltalake ENGINE=DeltaLake(deltalake_conf, filename = 'test_table')
|
|
```
|
|
|
|
## See also
|
|
|
|
- [deltaLake table function](../../../sql-reference/table-functions/deltalake.md)
|