json-path-exists-transact-sql.md

title	JSON_PATH_EXISTS (Transact-SQL)
description	JSON_PATH_EXISTS tests whether a specified SQL/JSON path exists in the input JSON string.
author	WilliamDAssafMSFT
ms.author	wiassaf
ms.reviewer	randolphwest, umajay, jovanpop
ms.date	11/04/2024
ms.service	sql
ms.subservice	t-sql
ms.topic	reference
ms.custom	build-2024 ignite-2024
dev_langs	TSQL
monikerRange	=azuresqldb-current || >=sql-server-ver16 || >=sql-server-linux-ver16 || =azuresqldb-mi-current || =fabric

JSON_PATH_EXISTS (Transact-SQL)

[!INCLUDE sqlserver2016-asdb-asdbmi-asa-fabricse-fabricdw]

Tests whether a specified SQL/JSON path exists in the input JSON string.

:::image type="icon" source="../../includes/media/topic-link-icon.svg" border="false"::: Transact-SQL syntax conventions

Syntax

JSON_PATH_EXISTS( value_expression, sql_json_path )

Arguments

value_expression

A character expression.

sql_json_path

A valid SQL/JSON path to test in the input.

Return value

Returns an int value of 1 or 0 or NULL. Returns NULL if the value_expression or input is a SQL NULL value. Returns 1 if the given SQL/JSON path exists in the input or returns a non-empty sequence. Returns 0 otherwise.

The JSON_PATH_EXISTS function doesn't return errors.

Examples

Example 1

The following example returns 1 since the input JSON string contains the specified SQL/JSON path.

DECLARE @jsonInfo NVARCHAR(MAX)

SET @jsonInfo=N'{"info":{"address":[{"town":"Paris"},{"town":"London"}]}}';

SELECT JSON_PATH_EXISTS(@jsonInfo,'$.info.address'); -- 1

Example 2

The following example returns 0 since the input JSON string doesn't contain the specified SQL/JSON path.

DECLARE @jsonInfo NVARCHAR(MAX)

SET @jsonInfo=N'{"info":{"address":[{"town":"Paris"},{"town":"London"}]}}';

SELECT JSON_PATH_EXISTS(@jsonInfo,'$.info.addresses'); -- 0

Related content

• JSON data in SQL Server