---
title: open() | Tiger Data Docs
description: Get the opening price from a candlestick aggregate
---

Since [1.14.0](https://github.com/timescale/timescaledb-toolkit/releases/tag/1.14.0)

Get the opening price from a candlestick aggregate.

## Arguments

The syntax is:

```
open(
    candlestick Candlestick
) RETURNS DOUBLE PRECISION
```

| Name        | Type        | Default | Required | Description           |
| ----------- | ----------- | ------- | -------- | --------------------- |
| candlestick | Candlestick | -       | ✔        | Candlestick aggregate |

## Returns

| Column | Type             | Description       |
| ------ | ---------------- | ----------------- |
| open   | DOUBLE PRECISION | The opening price |