Description
After the PR https://github.com/apache/spark/pull/42564, array_insert with -1 inserts an element at the end of the given array. So, array_append can be mapped to the array_insert() function.
After the PR https://github.com/apache/spark/pull/42564, array_insert with -1 inserts an element at the end of the given array. So, array_append can be mapped to the array_insert() function.