I'm thinking of very small datasets that map nicely to JSON where it would be nice to easily answer queries such as "what are all the values of X where Y > 3" or to do the usual SUM / COUNT type operations. OUTER APPLY OPENJSON (j, '$.Is there a (roughly) SQL or XQuery-like language for querying JSON? Here is how that would work on the provided document. When we need to extract multiple values from a single document, it is often best (for performance) to make a single call to JSONTABLE(). OUTER APPLY OPENJSON (j, '$.carrierPlans') AS aĬROSS APPLY OPENJSON (A.value, '$.plans')ĬROSS APPLY OPENJSON (A.Value, '$.plans') AS b As explained, for example, in the Oracle documentation, multiple calls to JSONVALUE() on the same JSON document may result in very poor performance. Let's say we have this simple table: CREATE TABLE dbo. select jsonobject ('id' value id, 'name' value lastname, 'office' value officenumber) from empdata This example uses the JSONOBJECT scalar function to generate a JSON object. , carrierName = JSON_VALUE(a.Value,'$.carrierName') JSONQUERY () SQL Server Function This new function allows you to retrieve an object or an array from within a larger JSON string. Building a basic JSON object Let's start with a simple example to see how easy it is to generate a basic JSON object. When we need to extract multiple values from a single document, it is often best (for performance) to make a single call to JSONTABLE (). When you call it, you pass a JSON document as an argument, and OPENJSON() then parses it and returns the JSON document’s objects and properties in a tabular format as rows and columns. SELECT carrierId = JSON_VALUE(a.Value,'$.carrierId') As explained, for example, in the Oracle documentation, multiple calls to JSONVALUE () on the same JSON document may result in very poor performance. SQL Server has a table-valued function called OPENJSON() that creates a relational view of JSON data. SQL - DDL and sample data population, startĭECLARE TABLE (id INT IDENTITY PRIMARY KEY, j NVARCHAR(MAX)) OR if I wanted to capture the plans array something like this SELECTĬurrent Result carrierId carrierName pbpId planName planId JSONMODIFY (Transact-SQL) changes a value in a JSON string. OUTER APPLY OPENJSON (b.) - array is the json column JSONQUERY (Transact-SQL) extracts an object or an array from a JSON string. For example, address contains values for different keys FlatNo, Locality, and City. In the below code, we have an address key that contains further nested elements. Would like to see how to alter my query to pull the "plans" as its array and alternatively how to pull the individual fields from it Example 5: Retrieve value from a nested JSON key data. phoneNumbers.number should be returning all numbers in that array. Its a simplified example and I basically need to return all elements if array is provided as argument. Ultimately the nested array comes back null and it's subsequent fields come back null. Data against that passed path should be returned from a (MUCH) complex JSON. For example, the following SQL/JSON path query would case-insensitively match all strings in an array that start with an English vowel: ( likeregex 'aeiou' flag 'i') The optional flag string may include one or more of the characters i for case-insensitive match, m to allow and to match at newlines, s to allow. For example, in order to parse data in SQL Server 2008 and above, we use OPENJSON function which transforms a JSON array to a table. These data files are loaded as-is into SQL Server tables, so this JSON exists in one column. JS JSON JSON Intro JSON Syntax JSON vs XML JSON Data Types JSON Parse JSON Stringify JSON Objects JSON Arrays JSON Server JSON PHP JSON HTML JSON JSONP JS vs jQuery jQuery Selectors jQuery HTML jQuery CSS jQuery DOM JS Graphics JS Graphics JS Canvas JS Plotly JS Chart.js JS Google Chart JS D3. Below is my JSON and query I've built so far, I feel like I'm just missing some silly piece.
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