The 'Maintain fully qualified field names' settings in a geoprocessing environment are not honored when creating a join in ArcMap.
Last Published: December 4, 2015ArcGIS for Desktop
Bug ID Number
July 23, 2015
November 24, 2020
ArcGIS for Desktop
Operating System Version
7.0 64 Bit
Will Not Be Addressed
The development team has considered the issue or request and concluded it will not be addressed. The issue's Additional Information section may contain further explanation.
This is by design. The unchecking or checking of the environment ‘Maintain fully qualified field names’ only takes effect when the join is held out by using copy features to copy the rows after a join. Joins always use Qualified field names to tract the tables it comes from. These are temporary joins until saved.