Json query example4/18/2023 The script starts with a drop table if exists statement so that the script can create and populate a fresh copy of the dbo.sympricevol table via the into clause of a select statement. JSON - Evaluates to JavaScript Objects The JSON format is almost identical to JavaScript objects. A name/value pair consists of a field name (in double quotes), followed by a colon, followed by a value: Example 'name':'John' JSON names require double quotes. The jsonquery filter lets you query a complex JSON structure and iterate over it using a loop structure. Here is a script to copy a JSON document (json) into a SQL Server table (dbo.sympricevol). JSON data is written as name/value pairs (aka key/value pairs). Injecting JSON object as query parameters: value JSON.stringify(obj) URLSearchParams to convert a string to an object representing search params. Here are some example expressions and their results when applied to the above JSON document: Returns a JSON string ('double quoted') Returns a JSON number Field references are separated by '.' Matched the path and returns the null value Path not found. In the example below, obj is the JSON object to pass into query parameters. 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. Selecting JSON data: JSON queries To select a single element or a data subset from a complex data structure in JSON format (for example, Ansible facts), use the jsonquery filter. Passing complex objects as query parameters of a url. The two structural constructs of JSON are objects and arrays. In common with XPath, this will select all possible values in the document that match the specified location path. Is there a (roughly) SQL or XQuery-like language for querying JSON? To support the extraction of values from a JSON structure, a location path syntax is defined.
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