eliminate duplicate array values in postgres

Question

I have an array of type bigint, how can I remove the duplicate values in that array?

Ex: array[1234, 5343, 6353, 1234, 1234]

I shou

Answer 1

I have assembled a set of stored procedures (functions) to combat PostgreSQL's lack of array handling coined anyarray. These functions are designed to work across any array data-type, not just integers as intarray does: https://www.github.com/JDBurnZ/anyarray

In your case, all you'd really need is anyarray_uniq.sql. Copy & paste the contents of that file into a PostgreSQL query and execute it to add the function. If you need array sorting as well, also add anyarray_sort.sql.

From there, you can peform a simple query as follows:

SELECT ANYARRAY_UNIQ(ARRAY[1234,5343,6353,1234,1234])

Returns something similar to: ARRAY[1234, 6353, 5343]

Or if you require sorting:

SELECT ANYARRAY_SORT(ANYARRAY_UNIQ(ARRAY[1234,5343,6353,1234,1234]))

Return exactly: ARRAY[1234, 5343, 6353]