In SQL Server, the JSON_VALUE function helps us to extract a scalar value from the JSON string. Read the article to know more about the function. Bobcares, as a part of our SQL Server Support offers solutions to every query that comes our way.

JSON_VALUE in SQL Server

We can use data in JSON format with SQL Server 2016 and later. Working with JSON data in SQL Server requires familiarity with the JSON format. Furthermore, it establishes a link between NoSQL systems and relational databases.

To read, parse, convert, and alter JSON objects, SQL Server comes with a number of built-in methods. One such function is the JSON function. “JavaScript Object Notation” is what JSON stands for. The language is for simple data sharing. Using a key-value pair, we may quickly comprehend data in JSON format. We can use the JSON in many NoSQL databases, including Couchbase and AWS DynamoDB. Modern online and mobile apps use it extensively.

SQL Server supports the following JSON VALUE functions, namely, ISJSON(), JSON_VALUE(), JSON_QUERY, and JSON_MODIFY(). The syntax for the JSON Value is as follows:

Here, the Expression variable contains the JSON string. The JSON_PATH shows the location of the string’s scalar value. And Path Module is optional. Let’s look into an example.

An Example

In this example, the JSON_VALUE() function extracts the value of the “flower” property from the JSON string and returns it as a scalar value. The result of this query would be “Jasmine”. The JSON_VALUE() method returns NULL if the given path expression does not match any value in the JSON string.

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Conclusion

The JSON_VALUE() method is limited to SQL Server 2016 and higher editions. Prior to SQL Server 2016, JSON was not supported by SQL Server natively.