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Composite Types, arrays, and functions

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I am getting an “invalid input syntax for type double precision” error when I return an array as part of a composite type from my C-language function. I can re-create this situation with just a type and a function.

 

My type is declared as follows:

 

CREATE TYPE my_grid AS (min_x double precision, min_y double precision, max_x double precision, max_y double precision, my_arr double precision[][]);

 

My function is defined as:

 

CREATE FUNCTION my_test()

RETURNS void AS $$

DECLARE

mine                      my_grid;

BEGIN

 

                SELECT INTO mine (0.1, 0.2, 0.3, 0.4,'{{88.9}}'::double precision[][])::my_grid;

END

$$

LANGUAGE plpgsql

SECURITY DEFINER

SET search_path = public;

 

 

To get the error, I run the following query:

 

SELECT MY_TEST();

 

If I do a plain “SELECT (0.1, 0.2, 0.3, 0.4,'{{88.9}}'::double precision[][])::my_grid;” everything looks good.

 

Any help would be appreciated.


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