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

Here's the "inline" way:

SELECT 1 AS anycolumn, (
  SELECT array_agg(c1)
  FROM (
    SELECT DISTINCT c1
    FROM (
      SELECT unnest(ARRAY[1234,5343,6353,1234,1234]) AS c1
    ) AS t1
  ) AS t2
) AS the_array;

First we create a set from array, then we select only distinct entries, and then aggregate it back into array.