BUG-000153589 for ArcGIS Pro

漏洞 ID 编号	BUG-000153589
已提交	November 9, 2022
上次修改时间	October 7, 2024
适用范围	ArcGIS Pro
找到的版本	3.0.2
操作系统	Windows OS
操作系统版本	10.0 64 Bit
状态	As Designed

附加信息

Using the dataset instead of a layer as an input to the SelectBy tools is for convenience reasons. But it incurs some performance problems, as captured and explained in this issue. If performance is a concern, see the workaround. When a dataset is passed as an input to the SelectBy tools, the first step is to generate a unique layer name. The heuristic is to create a layer based on the input name and if the layer exists, add an incrementing numeric value. So if the input dataset is 'city.shp', the tool generates 'cityLayer' in the first loop. The second loop also generates 'cityLayer' but as this returns 'True' to the existence check, the name of the layer is renamed to 'cityLayer1'. The third loop hits two name collisions before settling on 'cityLayer2', and so on. By the 100th iteration, we have 99 existence checks returning 'True', allowing to settle on 'cityLayer99'. The slowdown in the later parts of the iteration is due to this.

解决办法

Use arcpy.management.MakeFeatureLayer to create a feature layer to be used as an input for arcpy.management.SelectLayerByAttribute. Refer to the following ArcMap documentation for more information: https://desktop.arcgis.com/en/arcmap/latest/tools/data-management-toolbox/select-layer-by-attribute.htm