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Does Maplex labeling benefit from indexing attributes?

Question asked by mboeringa2010 Champion on Sep 16, 2015
Latest reply on Sep 16, 2015 by mboeringa2010

I have been wondering if the Maplex labeling engine actually benefits from indexing. Since ArcGIS for Desktop layer files work with "label classes", that can have an associated SQL Query, I wonder if indexing the specific field(s) referenced by the SQL Query, speeds up Maplex labeling. E.g. let's say I have a SQL Query set like:


"highway IN ('motorway','trunk')"


is it worth indexing the "highway" field in this case, assuming I may have large layouts (A0), potentially containing hundreds of objects to label?


I assume the primary filtering is simply spatial, so is the hassle of indexing attributes worth the effort for Maplex?