---
title: "categorical-key-value"
slug: "key-value"
updated: 2022-09-11T21:18:00Z
published: 2022-09-11T21:18:01Z
canonical: "code.tag.bio/key-value"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://code.tag.bio/llms.txt
> Use this file to discover all available pages before exploring further.

# key-value

The `key-value` **parser** will load data from a column in a source data table and split strings on a *delimiter* into key and value. Each key will become the **collection** name, and each paired value will become the **variable** name.

This **parser** can produce both numeric and categorical collections.

```
{
  "parser_type": "key-value",
  "table_alias": "tata",
  "column": "ccc1",
  "delimiter": "="
}
```

## delimiter

**usage: *required*** The delimiter attribute contains an string which delimits the key and value in the input data.