jackylau created FLINK-31102:
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             Summary: Add ARRAY_REMOVE supported in SQL & Table API
                 Key: FLINK-31102
                 URL: https://issues.apache.org/jira/browse/FLINK-31102
             Project: Flink
          Issue Type: Sub-task
          Components: Table SQL / Planner
    Affects Versions: 1.18.0
            Reporter: jackylau
             Fix For: 1.18.0


Remove all elements that equal to element from array.

Syntax:
array_remove(array)

Arguments:
array: An ARRAY to be handled.

Returns:

An ARRAY. If value is NULL, the result is NULL. 
Examples:
{code:sql}

 SELECT array_remove(array(1, 2, 3, null, 3), 3); 

SELECT array_size(ARRAY[1, 2, 3, 2, 1]);
-- [1,2,null]
{code}
See also
spark 
[[https://spark.apache.org/docs/latest/api/sql/index.html#array_size]|https://spark.apache.org/docs/latest/api/sql/index.html#array_remove]

presto https://prestodb.io/docs/current/functions/array.html

postgresql 
https://w3resource.com/PostgreSQL/postgresql_array_remove-function.php 



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