Filter Selection

• This is a toggle. The first click builds a definition query from the selection; the second click removes it.
• Select the features you want to isolate before clicking. The tool reads the current selection and writes it into the layer's definition query.
• The result is a definition query, not a selection. That distinction matters: Because a definition query hides the other features from everything — geoprocessing tools, attribute tables, exports, and the layout — it is the right way to work on a subset, and also an easy thing to forget you have applied.

• A layer with a definition query applied shows only part of its data. If a later tool reports a suspiciously low feature count, check whether a filter is still in place — clicking this button again clears it.
• The query replaces any definition query already on the layer. Note the existing query before using the tool if the layer already had one you need to keep.

1. Select the features you want to isolate, using any selection tool.
2. On the KGA Toolbox tab, in the Data Management group, open the Feature menu, point to Query Feature, and click Filter Selection.
3. The layer now displays only the selected features.
4. Do the work that needs the subset.
5. Click Filter Selection again to clear the query and restore the full display.

Requires an active KGA Toolbox license. The tool validates the license before running.