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1, JSON and JSONB Compared with other relational databases, Postgresql has a great advantage in that it has built-in many special data types, such as inet and MAC. The json and json types introduced in this paper are also two unique data types of Postgresql. In fact, their essence is to store data in jon format, However, the difference is that ...

background"Search" is a very high utilization function in our daily Internet access. The purpose of search is to quickly retrieve the target data. Users enter certain characteristics of the target data as search conditions, and after searching, they can get data that meets the corresponding characteristics. The more detailed the input ...

The role of Jason Era of front and rear end separation: The backend deploys the backend, provides interfaces, and provides data: Json The front end is deployed independently and is responsible for rendering the data of the back end: 1. What is Jason JSON (JavaScript object notation) is a lightweight data exchange format, which is widely ...

1, ES6 grammar guide After the back-end project is built, the front-end page is next. But before that, some preparations are needed. We need to learn the Syntax Standard of ES6. What is ES6? ECMAScript version 6 standard. 1. What is ECMAScript? Let's take a look at the development of the front end: web1.0 era: The original web page is mai ...

1, What is JSON JSON (JavaScript Object Notation) is a lightweight data exchange format. Easy to read and write. It is also easy to machine parse and generate. It is based on JavaScript programming language, a subset of standard ecma-262 3rd Edition - December 1999. JSON adopts a text format completely independent of the language, but it al ...

Previously on: Recently, when I was working on a project, the release suddenly changed the requirements. The original content type was application/json when the front-end submitted data, but now it is application/x-www-form-urlencoded. I was overwhelmed by this wave of operation. I'm a little white. We haven't corrected it. What are these thin ...

🛴 preface stay The previous two articles In, we explained the introduction of webpack. However, after the introduction knowledge is understood, it must be applied to specific cases. Therefore, in the following article, we will lead you to learn about some actual case configurations of webpack, including the packaging configuration of t ...

androud studio 3.5.2 Example file: Weathervolleyjson Not to mention here about json data acquisition and analysis, but read my previous articles with interest. Not to mention the benefits of font icons, there are a lot of them on the Internet. The app I made can already get and analyze the wind and weather, but the weather has been without i ...

Basic introduction to json Library Objects are passed through byte arrays in the network. In daily front and back-end interaction, they may be used in many forms, such as json, xml, pb, etc. This article mainly introduces the daily usage of json related libraries in golang language Serializable and Deserialize Serialization refers to th ...

Python handles json and dict data The difference between json and dict python's dict is a data structure, and json is a data transfer format. json is a pure string written according to a certain agreed format and does not have any characteristics of data structure. The string representation rules of python's dict look similar to json, but dic ...