![]() ![]() I was working on a data synchronization project, and one of my tasks was to produce a list of possible values for fields from one of the systems. It starts with a symbol, and we specify a dot then the name of the attribute we’re looking for. ![]() The path expression lets us specify the attribute we want to search for. JSONVALUE () Extracts a scalar value from a JSON string. First, let’s write the path expression, and then put that into our JSONVALUE function. My salvation came from an unexpected source: Microsoft SQL Server. Here’s how the two functions are defined: JSONQUERY () Extracts an object or an array from a JSON string. ![]() I started trying to write a regex expression to do it, but quickly decided that one problem was enough. We can convert a valid JSON data into a SQL Server rowset using the openjson function, a normal SQL Select statement. This done : select Id, PostalCode from Address CROSS APPLY OPENJSON (Address.Data, N. One particular API call was returning mountains of data, and I needed to get a list of distinct values of a particular property buried within the objects of this JSON response. The interesting part for you its Analyze JSON data with SQL queries. Have you ever wished that you could query a large JSON document? I wished that very thing recently while working with a 3rd party API. The query mixes regular table columns and JSON properties: Copy SELECT Countr圜ode, CountryName, JSONVALUE (Serialized, '.Population') AS People FROM Countries WHERE ISJSON (Serialized) > 0 AND JSONVALUE (Serialized, '.Population') > 100000000 ORDER BY JSONVALUE (Serialized, '. Heres a basic PHP script to get you started (assuming you are querying MS SQL Server locally from a Windows-based PHP environment there is a small change. ![]()
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