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Stored Procedure with WHERE .. IN array parameter

The question:

I want to set a boolean on every entry in a table matching an array of row ids passed into a stored procedure. Help me crack the proper syntax to accomplish this? The following is as close as I’ve gotten.

CREATE PROCEDURE tester (id_list bigint[])
AS
$$
UPDATE some_table
SET touched = true
WHERE id IN (unnest(id_list));
$$ LANGUAGE sql;

CALL tester(ARRAY[12, 34]);

The Solutions:

Below are the methods you can try. The first solution is probably the best. Try others if the first one doesn’t work. Senior developers aren’t just copying/pasting – they read the methods carefully & apply them wisely to each case.

Method 1

Use the ANY operator:

UPDATE some_table
  SET touched = true
WHERE id = ANY (id_list);

Method 2

a_horse_with_no_name’s ANY answer is tidier, but I also found out adding a SELECT in front of the unnest function also works:

CREATE PROCEDURE tester (id_list bigint[])
AS
$$
UPDATE some_table
SET touched = true
WHERE id IN (SELECT unnest(id_list));
$$ LANGUAGE sql;


All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0

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