Amazon Redshift will no longer support the creation of new Python UDFs starting Patch 198. Existing Python UDFs will continue to function until June 30, 2026. For more information, see the [ blog post ](https://aws.amazon.com/blogs/big-data/amazon-redshift-python-user-defined-functions-will-reach-end-of-support-after-june-30-2026/). 

# CBRT function
<a name="r_CBRT"></a>

 The CBRT function is a mathematical function that calculates the cube root of a given number. 

## Syntax
<a name="r_CBRT-synopsis"></a>

```
CBRT(number)
```

## Arguments
<a name="r_CBRT-argument"></a>

CBRT takes a `DOUBLE PRECISION` number as an argument. 

## Return type
<a name="r_CBRT-return-type"></a>

`DOUBLE PRECISION` 

## Examples
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The following example uses the TICKIT sample database. For more information, see [Sample database](c_sampledb.md).

To calculate the cube root of the commission paid for a given transaction, use the following example. 

```
SELECT CBRT(commission) FROM sales WHERE salesid=10000;

+--------------------+
|        cbrt        |
+--------------------+
| 3.0383953904884344 |
+--------------------+
```