---
title: "field · RUAL Documentation"
description: "checks if the given field exists in a document. Attention: Checking on a field which has 1024 sub-fields can cause a too_many_clauses exception"
canonical: https://docs.rual.nl/block-types/query/query_bool_exists_bpfield
language: en
---

# field

This block is part of the [`query`](https://docs.rual.nl/block-types/query) group and was last modified in core [`v10.4.28`](https://docs.rual.nl/core-versions/100428).

### Parent Requirements

This block requires specific parent elements: `query_bool_must`, `query_bool_must_not`, `query_bool_filter`, `query_bool_should`, `query_first_defined`. Ensure this block is placed within the appropriate parent context.

checks if the given field exists in a document. Attention: Checking on a field which has > 1024 sub-fields can cause a too_many_clauses exception

- query `query`

### Core Releases