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> Use this file to discover all available pages before exploring further.

> Documentation for the JSONCompactEachRowWithProgress format

# JSONCompactEachRowWithProgress

| Input | Output | Alias |
| ----- | ------ | ----- |
| ✗     | ✔      |       |

<h2 id="description">
  Description
</h2>

This format combines the compact row-by-row output of JSONCompactEachRow with streaming progress
information.
It outputs data as separate JSON objects for metadata, individual rows, progress updates,
totals, and exceptions. Values are represented in their native types.

Key features:

* Outputs metadata first with column names and types
* Each row is a separate JSON object with a "row" key containing an array of values
* Includes progress updates during query execution (as `{"progress":...}` objects)
* Supports totals and extremes
* Values keep their native types (numbers as numbers, strings as strings)

<h2 id="example-usage">
  Example usage
</h2>

```sql title="Query" theme={null}
SELECT *
FROM generateRandom('a Array(Int8), d Decimal32(4), c Tuple(DateTime64(3), UUID)', 1, 10, 2)
LIMIT 5
FORMAT JSONCompactEachRowWithProgress
```

```response title="Response" theme={null}
{"meta":[{"name":"a","type":"Array(Int8)"},{"name":"d","type":"Decimal(9, 4)"},{"name":"c","type":"Tuple(DateTime64(3), UUID)"}]}
{"row":[[-8], 46848.5225, ["2064-06-11 14:00:36.578","b06f4fa1-22ff-f84f-a1b7-a5807d983ae6"]]}
{"row":[[-76], -85331.598, ["2038-06-16 04:10:27.271","2bb0de60-3a2c-ffc0-d7a7-a5c88ed8177c"]]}
{"row":[[-32], -31470.8994, ["2027-07-18 16:58:34.654","1cdbae4c-ceb2-1337-b954-b175f5efbef8"]]}
{"row":[[-116], 32104.097, ["1979-04-27 21:51:53.321","66903704-3c83-8f8a-648a-da4ac1ffa9fc"]]}
{"row":[[], 2427.6614, ["1980-04-24 11:30:35.487","fee19be8-0f46-149b-ed98-43e7455ce2b2"]]}
{"progress":{"read_rows":"5","read_bytes":"184","total_rows_to_read":"5","elapsed_ns":"335771"}}
{"rows_before_limit_at_least":5}
```

<h2 id="format-settings">
  Format settings
</h2>