Foot 3 It is written as such a property list enclosed in braces ( ), with name-value pairs separated by commas ( ,), and with the name and value of each pair separated by a colon ( :). Foot 2 A JSON object is a JavaScript object literal.
In particular, SQL condition IS NULL condition returns false for a JSON null value, and SQL condition IS NOT NULL returns true.Ī JavaScript object is an associative array, or dictionary, of zero or more pairs of property names and associated JSON values. It is not NULL, which in SQL represents the absence of a value (missing, unknown, or inapplicable data). It is often used for serializing structured data and exchanging it over a network, typically between a server and web applications.Ī JSON value of null is a value as far as SQL is concerned.
Python json query language software#
JSON is relatively easy for humans to read and write, and easy for software to parse and generate. A variety of programming languages can parse and generate JSON data. It is a text-based way of representing JavaScript object literals, arrays, and scalar data.Īlthough it was defined in the context of JavaScript, JSON is in fact a language-independent data format. In this it has much in common with XML.īecause it is (almost a subset of) JavaScript notation, JSON can often be used in JavaScript programs without any need for parsing or serializing. Foot 1 Because it can be used to represent JavaScript object literals, JSON commonly serves as a data-interchange language. JSON is almost a subset of the object literal notation of JavaScript. The JavaScript dialect of ECMAScript is a general programming language used widely in web browsers and web servers. JavaScript Object Notation ( JSON) is defined in standards ECMA-404 (JSON Data Interchange Format) and ECMA-262 (ECMAScript Language Specification, third edition).
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