1/2/2024 0 Comments Json query sql server![]() Varbinary, binary, image, timestamp, rowversionĪlthough SQL Server’s support for XML allowed for graphical representation of the data via an editor (shown in Figure 1), attempting to view JSON data via an editor may be frustrating as JSON data is shown as an unformatted single row. SQL Server data stored in the following data types cannot be converted into JSON:Ī breakdown of supported data types is shown in Table1 SQL Server Data TypeĬhar, nchar, varchar, nvarchar, date, datetime, datetime2, time, datetimeoffset, uniqueidentifier, money Thus, it is important that we take note of the supported data types. Like many of the features in SQL Server, there are terms and conditions to using them and JSON is no different. In this article we take a look at how such a requirement can be implemented by data teams using SQL Server 2016 FOR JSON clause SQL Server to JSON Supported Data Types reporting tools, web services etc.) in a JSON format. The increased popularity of JSON in modern web applications may create a requirement for data teams to expose some of their data to client applications (i.e. Note that if you do this on a multiple row result, you’ll end up with invalid JSON.In my article, Warehousing JSON Formatted Data in SQL Server 2016, we had a look at available T-SQL options for converting JSON data into rows and columns for the purposes of populating a SQL Server based data warehouse. You can use the WITHOUT_ARRAY_WRAPPER option to remove the square brackets that surround the results. I also limited the result set to just three results by adding TOP 3 to the query. So we can modify the previous example to this: USE Music ![]() To do this, simply add the ROOT() option to the end of the query, with the name you want root node to have. This adds a single, top-level element to the output. You can use the ROOT() option to add a root node to the output. This is because the AUTO option determines the output based on the order of columns in the SELECT list and their source tables. USE Music Īs you can see, each album has been nested under “Albums”. In this case, each artist can have many albums. In this example, I query two tables that have a one-to-many relationship between them. If you can’t get it to display the results in a satisfactory way, try a different tool. You may also find that the results are initially distributed across multiple rows, depending on how large the result set is. ![]() I also had varying degrees of success using command line tools. SSMS however, only formats the results as one long line (although still in JSON format). It also worked fine when using the MSSQL extension in VS Code. Whether this works exactly as described will depend on the software that you use to query SQL Server.Īt the time of writing, this worked fine for me when using SQL Operations Studio (which has since been renamed to Azure Data Studio). Depending on your database management software, this should launch the JSON document as it appears in the above example. If this is the case, try clicking the result set. Your results may initially appear in a single row and a single column, and as one long line like this: In this case I used TOP 3 to limit the result set to just three results. So the results come out as a nicely formatted JSON document, instead of in rows and columns. So basically, all you need to do is add FOR JSON AUTO to the end of your query. When doing this, you must choose either the AUTO or the PATH option. This article contains examples of using the AUTO option. In SQL Server you can use the FOR JSON clause in a query to format the results as JSON.
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