AggregateOperand.Exists Method

Name	Parameters	Description
Exists()	none	Initializes a new AggregateOperand instance that evaluates whether an object exists in the collection. The new operand computes the aggregate value against elements of the current operand’s CollectionProperty that match the current operand’s Condition.
Exists(CriteriaOperator)	aggregatedExpression	Initializes a new AggregateOperand instance that evaluates whether the object that corresponds to the specified aggregatedExpression exists. The new operand computes the aggregate value against elements of the current operand’s CollectionProperty that match the current operand’s Condition.