Subtract

Server User Guides > Survey Tabulation > Advanced expressions > Operators > Categorical set logic > Subtract

Subtract

The subtract (-) operator returns the categories that are in the category list on the left but not in the category list on the right. The category order from the category list on the left is maintained above the category list on the right.

Examples	Result
{5,2,1,8,6} - {1,5,3,9,7}	{2,8,6}
{FOSSILS, BIRDS, WHALES} - {WHALES, BIRDS, FOSSILS}	{ }
{FOSSILS, BIRDS, WHALES} - {MINERALS, ECOLOGY, BIRDS, FOSSILS}	{WHALES}