Except

Finds the difference between two sets, optionally retaining duplicates.

Syntax

Except(«Set1», «Set2»[, ALL])

Remarks

Duplicates are eliminated from both sets prior to finding the difference. The optional ALL flag retains duplicates. Matching duplicates in «Set1» are eliminated and nonmatching duplicates are retained.

Example

This example

Except({Canada, [British Columbia], Mexico, [British Columbia], USA, Washington}, {Canada, Mexico, California})

returns

{[British Columbia], USA, Washington}

and this example

Except({Canada, [British Columbia], Mexico, [British Columbia], USA, Washington}, {Canada, Mexico, California}, ALL)

returns

{[British Columbia], [British Columbia], USA, Washington}.