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I have a model with species point data as a source layer and a number of different shapefiles as target layers. To start I run a search by location tool to determine where the source and target layers intersect, and then copy features to create a new target layer. Next I want to use the select by attribute tool to determine where in my original target layer are common attributes to my new target layer. My question is: Is there an SQL expression that would allow the search by attribute tool to select from an individual field in the new target layer and compare it to the original layer?

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Union the layers and then select by attributes where FieldName = FieldName_1 (if they are named the same then the second input will automatically be renamed with an '_1' suffix).

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