Selecting an at-prefixed JSON key breaks row details #3519

What happened?

HyperDX changes event.`@request_id` to event.@request_id in the detail query. The query returns zero rows. The details panel remains blank.

Steps to reproduce

Here is the used table schema:

CREATE TABLE default.hyperdx_row_repro
(
    timestamp DateTime('UTC'),
    event JSON(max_dynamic_paths=0, `@request_id` Nullable(String))
)
ENGINE = MergeTree
PARTITION BY toDate(timestamp)
ORDER BY timestamp;

INSERT INTO default.hyperdx_row_repro VALUES
('2026-11-02 12:53:33', '{"@request_id":"request-A"}');

Reproduces on play.hyperdx.io? didn't try

1. Create a HyperDX log source for this table.
2. Set Timestamp Column to timestamp.
3. Set the absolute time range to 2026-11-02 12:53:00–12:54:00 UTC.
4. Set SELECT to timestamp, event.`@request_id` .
5. Open the row details.

Actual: the production detail query returns data: [], rows: 0. And empty sidebar without information for the clicked row. With SELECT set to timestamp, event, production returns the correct event.

Expected: both detail queries return the selected event.

How are you running HyperDX?

Clickhouse Cloud

Where does it show up?

Debug info

**Debug info**

frontend: 2.41.0-sha38acb5a
backend:  2.41.0-sha38acb5a
mode:     cloud
user:     6aad226315bbfa844bbf9fe3
team:     6ae883cb114b02c912d4515b
features: alertDetails, aiAssistant
url:      /team
screen:   1800x1169 (viewport 1800x1066, dpr 2)
platform: MacIntel
language: en-US
ua:       Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:153.0) Gecko/20100101 Firefox/153.0
session:  85d51be394f63b7343630a8509512844

Logs