| title | description | author | ms.author | ms.reviewer | ms.date | ms.service | ms.subservice | ms.topic | ms.custom | dev_langs | monikerRange | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
JSON_PATH_EXISTS (Transact-SQL) |
JSON_PATH_EXISTS tests whether a specified SQL/JSON path exists in the input JSON string. |
WilliamDAssafMSFT |
wiassaf |
randolphwest, umajay, jovanpop |
01/07/2025 |
sql |
t-sql |
reference |
|
|
=azuresqldb-current || >=sql-server-ver16 || >=sql-server-linux-ver16 || =azuresqldb-mi-current || =fabric |
[!INCLUDE sqlserver2022-asdb-asmi-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
JSON_PATH_EXISTS( value_expression , sql_json_path )
A character expression.
A valid SQL/JSON path to test in the input.
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.
The following example returns 1 since the input JSON string contains the specified SQL/JSON path. This example uses a nested path where the key is present in another object.
DECLARE @jsonInfo AS NVARCHAR (MAX);
SET @jsonInfo = N'{"info":{"address":[{"town":"Paris"},{"town":"London"}]}}';
SELECT JSON_PATH_EXISTS(@jsonInfo, '$.info.address');[!INCLUDE ssresult-md]
1
The following example returns 0 since the input JSON string doesn't contain the specified SQL/JSON path.
DECLARE @jsonInfo AS NVARCHAR (MAX);
SET @jsonInfo = N'{"info":{"address":[{"town":"Paris"},{"town":"London"}]}}';
SELECT JSON_PATH_EXISTS(@jsonInfo, '$.info.addresses');[!INCLUDE ssresult-md]
0