How to compare two arrays and pick only the non matching elements In postgres

Question

How can I pick only the non matching elements between two arrays.

Example:

base_array [12,3,5,7,8]
temp_array [3,7,8]

So here I wan

Answer 1

I've constructed a set of functions to deal specifically with these types of issues: https://github.com/JDBurnZ/anyarray

The greatest thing is these functions work across ALL data-types, not JUST integers, as intarray is limited to.

After loading loading the functions defined in those SQL files from GitHub, all you'd need to do is:

SELECT
  ANYARRAY_DIFF(
    ARRAY[12, 3, 5, 7, 8],
    ARRAY[3, 7, 8]
  )

Returns something similar to: ARRAY[12, 5]

If you also need to return the values sorted:

SELECT
  ANYARRAY_SORT(
    ANYARRAY_DIFF(
      ARRAY[12, 3, 5, 7, 8],
      ARRAY[3, 7, 8]
    )
  )

Returns exactly: ARRAY[5, 12]