postgres: Setting the value of an array with a subquery?

In postgres, can you se开发者_JAVA百科t the value of an array in an INSERT to the result of a subquery? Like:

INSERT INTO mytable
VALUES( SELECT list_of_integers FROM someothertable WHERE somekey = somevalue);

Where that mytable just has as its one column a type of integer[] and that other column list_of_integers is also type integer[] ?

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You want the unnest function. I think you'd use it like:

INSERT INTO mytable
SELECT set_of_integers
FROM unnest(
  SELECT list_of_integers
  FROM someothertable
  WHERE somekey = somevalue
) t(set_of_integers)

But i don't have PostgreSQL to hand to try it out myself.

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Yes:

INSERT INTO
     mytable
    (column1, column2, an_array_of_integers_column)
VALUES
    (2, 'bbb', (SELECT list_of_integers FROM someothertable WHERE somekey = somevalue));