unique

unique(array) → array · Array

Remove duplicate values. Alias for distinct(). Preserves first occurrence.

• array (required): the array to deduplicate

unique([1, 2, 2, 3, 3, 3])              // [1, 2, 3]
unique(["apple", "banana", "apple"])     // ["apple", "banana"]

// Use case: collect unique customer IDs
{
  customers: unique(map($input.orders, (o) -> o.customerId))
}