> ## Documentation Index
> Fetch the complete documentation index at: https://www.integrate.io/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# ETL: ISO 8601 String Functions

> Guide to using ISO 8601 datetime string functions in Integrate.io ETL. Parse, format, truncate, and manipulate ISO dates in pipeline expressions.

```
(IsISODatetime(datetime_field) ? ISOToHour(datetime_field) : null)
```