[jira] [Created] (SPARK-29737) Concat for array in Spark SQL is not the one in PostgreSQL but array_cat

["Kent Yao (Jira)" <ji...@apache.org>]

Kent Yao created SPARK-29737:
--------------------------------

             Summary: Concat for array in Spark SQL is not the one in PostgreSQL but array_cat
                 Key: SPARK-29737
                 URL: https://issues.apache.org/jira/browse/SPARK-29737
             Project: Spark
          Issue Type: Sub-task
          Components: SQL
    Affects Versions: 3.0.0
            Reporter: Kent Yao


{code:sql}
postgres=# select array_cat(array[1,2], array[2]);
 array_cat
-----------
 {1,2,2}
(1 row)

postgres=# select concat(array[1,2], array[2]);
  concat
----------
 {1,2}{2}
(1 row)
{code}

{code:sql}
// Some comments here
spark-sql> select concat(array(1,2), array(2));
[1,2,2]
{code}




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