Source: https://dev-docs.nebula-graph.io/v5.3.2/database-gql-reference/fe/predicates/null/
Documentation version: v5.3.2

# Null predicate

The null predicate checks if a value is `null` or not.

## Syntax

diagramsource

 null_predicate  

````
null_predicate ::= 
    value_expression 'IS' 'NOT'? 'NULL'

````

## Parameters

### `value_expression`

The value expression that is checked for `null`.

## Examples

### Check if a value is null

````
LET a= null>10 RETURN a IS NULL AS a_is_null

````

Return:

````
+-----------+
| a_is_null |
+-----------+
| true      |
+-----------+

````