![]() Get only homeaddress. I hope this has helped on your SQL Server JSON journey. Heres how you can query a JSON column in SQL Server. SQL Copy SELECT JSONARRAY () Result JSON Copy Example 2 The following example returns a JSON array with four elements. Remarks Examples Example 1 The following example returns an empty JSON array. This has enabled us to get to the element that is named value – as this name appears in both the default and explicit schema names and thus requires an alias. Returns a valid JSON array string of nvarchar (max) type. Question: What is best solution to generate JSON from a SQL query in MS SQL 2014 I created a procedure, but it is very slow. Let's say we have this simple table: CREATE TABLE dbo. Notice also that different aliasing (of the default and explicit schema) has allowed us to request data from both the default schema and the explicit schema. JSONQUERY () SQL Server Function This new function allows you to retrieve an object or an array from within a larger JSON string. This technique can come in extremely handy when attempting to drill down into sub arrays and objects contained in a JSON document. "description": "Maximum recovery interval in minutes", "Configuration name": "recovery interval (min)", We can mix both the default and explicit schema by using CROSS APPLY Using JSONQUERY, we can hold chunk / fragment of JSON data SELECT JSONQUERY (JsonCol,'.MSSQL.SQL Server') As JSONFragment FROM JSONData Above query will throw error, as path name SQL Server has space and it needs to be enclosed within double quotes as shown in below image : JSONVALUE can be used to hold a single value from JSON text. OPENJSON is actually a table-valued function that parses JSON – either into an explicit schema (that we provide) or the default schema. Indeed if you try this in a simple query you’ll find it is not possible without the use of APPLY operator. So far, in our examples we have either used the default schema or an explicit schema – but we have not mixed the two. OPENJSON is pretty central to manipulating JSON documents in T-SQL.Īs we’ve seen, we can use a default schema that will return metadata about the JSON document or we can use an explicit schema where we supply a WITH clause and a PATH to the data that we want.
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