Formatting subquery results
About the format command
The format command returns a substring of boolean expressions for use as a filter in the search command. For example, if a subquery returns a table:
| field1 | field2 |
-----------------------------
event/row1 | val1_1 | val1_2 |
event/row2 | val2_1 | val2_2 |
Then the result of applying the format command to it will be like this:
(field1=val1_1 AND поле2=val1_2) OR (field1=val2_1 AND поле2=val2_2)
How to use formatting
Example search query:
source wineventlog-*
| search host.name.keyword="JM-HEW-019"
| table event.action, user.name, host.name
Search query result:

Now we use the format command:
source wineventlog-*
| search host.name.keyword="JM-HEW-019"
| table event.action, user.name, host.name
| format

The format command converts the results of the previous command. Typically, the format command is used to prepare data for further analysis, display, or transfer to another part of the request.