Notion - Database

There is an optional query parameter called `properties=` that can be used to customize field mapping. There are three built-in fields: author, pubTime and link, which can be used to add additional information. For example, if you have set up three properties in your database - "Publish Time", "Author", and "Original Article Link" - then execute the following JavaScript code to get the result for the properties parameter. ```js encodeURIComponent(JSON.stringify({"pubTime": "Publish Time", "author": "Author", "link": "Original Article Link"})) ``` There is an optional query parameter called `query=` that can be used to customize the search rules for your database, such as custom sorting and filtering rules. please refer to the [Notion API documentation](https://developers.notion.com/reference/post-database-query) and execute `encodeURIComponent(JSON.stringify(custom rules))` to provide the query parameter.