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

# Construct value expression

The construct value expression is an expression used to create constructed data types, such as `LIST` and `RECORD`. For information about the list type and record type, see [Data types](https://dev-docs.nebula-graph.io/v5.3.2/database-gql-reference/data-types/).

## Syntax

diagramsource

 construct_value_expression  

````
construct_value_expression ::=
    'LIST' '[' value_expression ( ',' value_expression )* ']'
  | ( 'RECORD' )? '{' ( (field_name ':' value_expression) ( ',' (field_name ':' value_expression) )* )? '}'

````

## Parameters

### `LIST`

Declares to construct a list.

### `RECORD`

Declares to construct a record.

### `value_expression`

The expression that returns a value as an element of a list or as a field value of a record. For more information, see [value expression](https://dev-docs.nebula-graph.io/v5.3.2/database-gql-reference/fe/#value_expressions). 

### `field_name`

The name of a field in a record. `field_name` is an identifier. For more information about identifiers, see [Rules for naming identifiers](https://dev-docs.nebula-graph.io/v5.3.2/database-gql-reference/overview/keywords-identifiers/#rules_for_naming_identifiers).

## Examples

### Construct a list

````
RETURN LIST [1,2,3,4,5] AS l

````

Return:

````
+-------------+
| l           |
+-------------+
| [1,2,3,4,5] |
+-------------+

````

### Construct a record

````
RETURN RECORD {a:1, b:true, c:"str literal"} AS record1

````

Return:

````
+------------------------------+
| record1                      |
+------------------------------+
| {a:1,b:true,c:"str literal"} |
+------------------------------+

````