# Redshift

### Connection configuration reference

Install the following package:

```bash
pip install soda-redshift
```

#### Data source YAML

**Create the config file:**

```shellscript
soda data-source create -f ds_config.yml
```

The data source configuration YAML should look like the following:

{% code title="ds\_config.yml" %}

```yaml
type: redshift
name: my_redshift
connection:
  host: ${env.REDSHIFT_HOST}
  port: 5439
  database: ${env.REDSHIFT_DB}
  user: ${env.REDSHIFT_USER}
  
  # optional
  password: ${env.REDSHIFT_PW}
  access_key_id: ${env.REDSHIFT_AWS_ACCESS_KEY_ID}
  secret_access_key: ${env.REDSHIFT_AWS_SECRET_ACCESS_KEY}
  session_token: ${env.REDSHIFT_AWS_SESSION_TOKEN}
  role_arn: ${env.REDSHIFT_ROLE_ARN} # e.g., arn:aws:iam::123456789012:role/MyRole
  region: ${env.REDSHIFT_REGION} # e.g., us-east-1
  profile_name: ${env.REDSHIFT_AWS_PROFILE}
  cluster_identifier: ${env.REDSHIFT_CLUSTER_ID}
```

{% endcode %}

#### Connection test

Test the data source connection:

```bash
soda data-source test -ds ds_config.yml
```

***

### Case sensitivity

{% hint style="warning" %}
In [Soda v3](https://app.gitbook.com/o/ig9n9VJPAFRSFLtZKVB2/s/oV0A6Eua8LUIyWgHxsjf/), Soda only supports case-insensitive identifiers for this data source. **Users migrating from v3 to v4 might have to account for case** since **Soda v4 enforces case-sensitive identifiers**.
{% endhint %}

Redshift is usually case-insensitive and interprets all identifiers (e.g. table and column names) as lower case regardless of the original input. However, **Soda enforces case-sensitive identifiers for its sessions**.

Starting with **Soda v4**, all queries executed against Redshift are now run with **`enable_case_sensitive_identifier = True`**, regardless of your database’s default setting. This ensures consistent handling of table and column names, including those containing uppercase characters.

If you previously relied on case-insensitive behavior (the default in Soda v3), you may need to **review and update any custom SQL**, filters, or references to identifiers to ensure they match the exact case used in your Redshift schema.

This change prevents onboarding issues for mixed-case identifiers, but it also means **all SQL executed by Soda is now case sensitive**.

{% hint style="warning" %}
**Text truncation in Diagnostics Warehouse**

When using **Redshift** as your Diagnostics Warehouse target, **large text values may be truncated** (65,535 char limit) **or produce hashing collisions** when stored in Soda result tables.

> To learn more, go to [limitations & edge cases](https://docs.soda.io/reference/data-source-reference-for-soda-core/broken-reference) in Diagnostics Warehouse data sources.
> {% endhint %}

<br>

***

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---

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