Blob Url
Build a download URL from a blob reference or GUID.
blob_url
Returns an API-relative download URL for a blob in the current query account. The query results grid renders the URL as an authenticated download link.
Spec
blob_url(blob)Parameters
| Parameter | Type | Description |
|---|---|---|
| blob | BlobReference or Int128 (GUID) | Identity of the blob to download. |
Return Value
A string with the form /accounts/{accountId}/blobs/{blobId}. Null or empty identities return null. The function requires a nonempty query account and performs no blob-storage reads. Blob existence and current permissions are checked when downloading.
Outside the grid, resolve the path against the API base URL and authenticate the request. The response supplies the stored filename and MIME type.
Example
GMRS
| project timestamp, download = blob_url(recording)| timestamp | download |
|---|---|
| 2026-11-14T12:00:00Z | /accounts/11111111-1111-1111-1111-111111111111/blobs/22222222-2222-2222-2222-222222222222 |
Replace recording with the table's BlobReference column. Click a download cell or focus the cell with the arrow keys and press Enter. Raw blob-reference columns return UUID strings; use blob_url() to project a download link. Existing stored blobs and references do not need conversion.