|esriSetUnion||1||The Union of the two sets.|
|esriSetIntersection||2||The Intersection of the two sets.|
|esriSetDifference||3||The Difference between the first and the second sets.|
|esriSetSymDifference||4||The Symmetric Difference between the two sets.|
All rows present in the first selection set and all rows in the second are copied to the output selection set. This is a Boolean OR operation
All row IDs present in both input selection sets are copied to the output set. Those row IDs present in only one set are discarded. This is a Boolean AND operation.
All rows present in the first selection set but not in the second are copied to the output selection set. This is a Boolean INHIBITION operation.
All rows present in either of the input selection sets, but not present in both, are copied to the output set. This is a Boolean XOR operation.