---
title: Add constant columns to your output
description: ```
glaze yaml misc/test-data/test.yaml --input-is-array \
     --add-fields name:Hello
```

doc_version: 1
last_updated: 2026-07-02
---


You can easily add constant fields to your output, which can be useful for tagging
your data in a shell script, for example.

```

❯ glaze yaml misc/test-data/test.yaml --input-is-array \
      --add-fields name:Hello,yoyo:bar
+---------+-----+-----+-----+-----+-----+------+-------+
| foobar  | foo | bar | baz | d.e | d.f | yoyo | name  |
+---------+-----+-----+-----+-----+-----+------+-------+
| 3, 4, 5 | 1   | 7   | 2   | 6   | 7   | bar  | Hello |
|         | 10  | 70  | 20  | 60  | 70  | bar  | Hello |
| 300     |     |     | 200 |     |     | bar  | Hello |
+---------+-----+-----+-----+-----+-----+------+-------+
```