SELECT StudId, StudName, StudCode, StudAddress FROM dbo.StudentInfo Using FOR JSON AUTO clause to generate JSON from table StudentInfo. You can provide specific columns as well.
In select statement it is not mandatory to pass all table column’s name. SELECT StudId, StudName, StudCode, StudAddress FROM dbo.StudentInfoĪs you can see, It converts table output in Json format. Lets generate JSON from table using FOR JSON PATH clauseįollowing statement uses FOR JSON Path clause and generates JSON from table StudentInfo. Use FOR JSON PATH or add a FROM clause with a table name.” SELECT 'Microsoft SQL Server 2016' as DatabaseName,Īs you can see, It gives an error syaing “FOR JSON AUTO requires at least one table for generating JSON objects. Lets try to generate JSON without table, just gives hard-coded values. It requires at least one table to generate JSON when using FOR JSON AUTO clause. Using FOR JSON AUTO clause, you can not generate JSON without table. SELECT 'Microsoft SQL Server 2016' as DatabaseName, Using FOR JSON PATH clause you can generate JSON, in case if you do not have any table and passing hard-coded values as shown below. Lets understand the use of FOR JSON PATH and FOR JSON AUTO clause FOR JSON PATH Clause ( 'Rozer Hanery', 'D78JKHI', 'Condominum 3A, 3rd floor') GO INSERT INTO dbo.StudentInfo (StudName, StudCode, StudAddress) Lets look at an example using FOR JSON clause in SQL Server.įirst we create a sample table named as studentInfo and Insert some sample records in table. FOR JSON AUTO is used to format the JSON output automatically based on the structure of the SELECT statement.
#Tsql json query full
FOR JSON PATH gives the full control over the format of the JSON output also can create wrapper objects and nest complex properties.Using FOR JSON clause, you can specify the structure of the JSON output explicitly with the help of PATH and AUTO as given below. It was introduced in SQL Server 2016 version. Since OPENJSON returns a set of rows, you can use OPENJSON in the FROM clause of a T-SQL statement just as you can use any other table, view, or table-valued function.SQL Server FOR JSON Clause is used to format query result to JSON format or export data from SQL Server as JSON format. You can explicitly specify the columns in the rowset and the JSON property paths used to populate the columns. In other words, OPENJSON provides a rowset view over a JSON document. OPENJSON is a table-valued function that parses JSON text and returns objects and properties from the JSON input as rows and columns.
That is when I stumbled upon another method in T-SQL called OPENJSON Until today I never got to query nested arrays of a JSON object with SQL. Getting around with Store procedures while whole application runs with entity framework.The well documented recourses came in handy during initial development. When we were faced to store lot of dynamically modelled data in a relational DB, we decided on storing them in a JSON column of SQL server.
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