BUG-000162236 for ArcGIS Online

漏洞 ID 编号	BUG-000162236
已提交	October 19, 2023
上次修改时间	August 21, 2024
适用范围	ArcGIS Online
找到的版本	June 2023
操作系统	Windows OS
操作系统版本	11.0 64 bit
状态	Will Not Be Addressed

附加信息

This is an expected behavior in SQL. It might logically make sense to have the null values returned but SQL behaves differently. NULL indicates that the value is unknown and is different from an empty or zero value. No two null values are equal. Comparisons between two null values, or between a null value and any other value, return unknown because the value of each NULL is unknown. As a result, null values always coerces to FALSE as a boolean.

解决办法

As of August 2024, this workflow is possible in ArcGIS Online Map Viewer using the Condition groups. Conditions can be added to the same group through the three dot menu in the top right corner. New groups can be added through the 'Add new' button at the bottom of the pane. In the map below, the visible points include both points with null values and those that match the 'is not' condition for the Country field.