ArcGIS Pro 3.0.1: What is the benefit of indexing a feature class for a particular field?

[JamalNUMAN]

ArcGIS Pro 3.0.1: What is the benefit of indexing a feature class for a particular field?

For example, a layer of around 340,000 records is indexed based on the “parcelnumber” field knowing that this field has around 16,000 unique values. How the benefit of this indexing can be felt?

[JamalNUMAN]

Thank you very much. It works great.

[DanPatterson]

To determine whether things would be sped up using indices, you would obviously have to perform a query before and after indexing, timing both.

If the queries are taking an inordinately long time, then the root problem may lie elsewhere, like location of the data, network issues (if applicable), hardware etc etc.

[JamalNUMAN]

Thank you very much. It works great.

I’m wondering if there is a tool that can measure the time consumed in performing the “select by attribute” tool in the model builder. This way we can easily compare between querying in indexed and nonindexed feature classes.