The select operator filters a source collection, returning a new collection of the same type containing only the elements that satisfy a specific condition.

Syntax

sourceCollection->select(iterator | condition)

• sourceCollection: The initial Set, Bag, or Sequence.
• iterator: A variable representing each element during the evaluation.
• condition: A boolean OclExpression. If true, the element is included in the result.

Expression	Result
Sequence{1, 2, 3}->select(i| i > 1)	Sequence{2, 3}
Bag{1, 2, 3}->select(i| i > 1 )	Bag{3, 2}
Set{1, 2, 3}->select(i| i > 1 )	Set{3, 2}
Customer.allInstances->select(a | a.Name.SqlLike('%Alex%'))	A collection of Customers whose name contains "Alex".