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create table your_function_output(result int[]); insert into your_function_output values ( null ),--plain null (ARRAY[ null ]::int[]),--an array with a null in it (ARRAY[ ]::int[]),--an empty array (ARRAY[ 1 ]::int[]),--single-element array (ARRAY[1,2,3 ]::int[]),--multiple-element array (ARRAY[1,-5,2]::int[]),--different order (ARRAY[1,null]::int[]) --array with a null as one of the elements returning *;
CREATE TABLE
result
null
{NULL}
{}
{1}
{1,2,3}
{1,-5,2}
{1,NULL}
INSERT 0 7