In XQL, which operator is used for field aliasing?

In the Cortex XDR Query Language (XQL), the AS operator is used to create an alias, which is a temporary and more descriptive name for a field. This is most commonly done within the summarize stage to rename the output field of an aggregation function, improving the readability of query results. For example, summarize count(eventid) as eventcount by actorprocessimagename. While the equals sign (=) can also be used for assignment in some contexts, AS is the standard and explicit operator designated for aliasing.