---
title: Welcome to Evidence's Hugging Face Demo
---

The source code for this project can be found in this <a href=https://huggingface.co/spaces/evidence-dev/template-app/tree/main class=markdown target="_blank">Hugging Face Space</a>.

<Details title='How to edit this page'>

  This page can be found in your project at `/pages/index.md`. Make a change to the markdown file and save it to see the change take effect in your browser.
</Details>

```sql categories
  select
      category
  from needful_things.orders
  group by category
```

<Dropdown data={categories} name=category value=category>
    <DropdownOption value="%" valueLabel="All Categories"/>
</Dropdown>

<Dropdown name=year>
    <DropdownOption value=% valueLabel="All Years"/>
    <DropdownOption value=2019/>
    <DropdownOption value=2020/>
    <DropdownOption value=2021/>
</Dropdown>

```sql orders_by_category
  select 
      date_trunc('month', order_datetime) as month,
      sum(sales) as sales_usd,
      category
  from needful_things.orders
  where category like '${inputs.category.value}'
  and date_part('year', order_datetime) like '${inputs.year.value}'
  group by all
  order by sales_usd desc
```

<BarChart
    data={orders_by_category}
    title="Sales by Month, {inputs.category.label}"
    x=month
    y=sales_usd
    series=category
/>


## Learn More

- Read the [Docs](https://docs.evidence.dev/)
- Get support on <a href=https://slack.evidence.dev/ class=markdown target="_blank">Slack</a>
- Open issues on <a href=https://github.com/evidence-dev/evidence class=markdown target="_blank">GitHub</a>