array_except function

Returns an array of the elements in array1 but not in array2.

Syntax 

array_except(array1, array2)

Arguments

  • array1: An ARRAY of any type with comparable elements.

  • array2: An ARRAY of elements sharing a least common type with the elements of array1.

Returns

An ARRAY of matching type to array1 with no duplicates.

Examples 

> SELECT array_except(array(1, 2, 2, 3), array(1, 1, 3, 5));
 [2]