# Frequently Asked Questions

## How do I write KQL to find items with empty fields?

In order to write KQL to find items where a particular field is empty (empty string matching), the following KQL should be used:

```auto
"field":""
```

The syntax

```auto
"field":
```

is _incorrect_ as it is equivalent to "field":() which is an empty sequence (ex. type:(RQ,SW)). Empty sequence matching behaves differently than empty string matching.