---
title: MD_ATTACHED_DATABASES
description: List databases attached to your DuckDB and MotherDuck session.
---

# MD_ATTACHED_DATABASES

`MD_ATTACHED_DATABASES()` lists the databases attached in your session, including MotherDuck databases, shares, and local databases.

Use [`SHOW ALL DATABASES`](/sql-reference/motherduck-sql-reference/show-databases) when you also want to see detached MotherDuck databases available to you.

## Syntax

```sql
FROM md_attached_databases();
```

## Output

| Column Name | Data Type | Value |
|-------------|-----------|-------|
| `alias` | VARCHAR | Attached database alias |
| `is_share` | BOOLEAN | Whether the attached database is a share |
| `is_readonly` | BOOLEAN | Whether the database is attached read-only |
| `is_error_catalog` | BOOLEAN | Whether the attachment is an error catalog |
| `error_message` | VARCHAR | Error message for error catalogs, if any |
| `is_ducklake` | BOOLEAN | Whether the attached database is a DuckLake database |

## Example usage

```sql
FROM md_attached_databases();
```

```sql
SELECT alias
FROM md_attached_databases()
WHERE is_share;
```


---

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```json
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