## Area Chart with 100% Stacking
```sql
-- @chart: area
-- @title: Stacking-mode - 100% normalizing a stacked chart
-- @groups: Month, Channel
-- @subtitle: An example area chart that is 100% stacked
-- @formats: currency
-- @series: Sales
-- @stacks: Channel
-- @stacking-mode: percent
SELECT
TRUNC(date_closed, 'MONTH') as Month,
Channel,
sum(amount) as Sales
FROM sales
GROUP BY Month, Channel
ORDER BY Month ASC;
```
| MONTH | CHANNEL | SALES |
| -------------------------------- | -------- | --------- |
| January, 01 2017 00:00:00 +0000 | coldcall | 174647.0 |
| January, 01 2017 00:00:00 +0000 | referral | 1310064.0 |
| January, 01 2017 00:00:00 +0000 | search | 681444.0 |
| January, 01 2017 00:00:00 +0000 | event | 502700.0 |
| February, 01 2017 00:00:00 +0000 | pr\_ad | 509564.0 |
| February, 01 2017 00:00:00 +0000 | search | 1109141.0 |
| February, 01 2017 00:00:00 +0000 | event | 417651.0 |
---
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