PostgreSQL JOIN with array type with array elements order, how to implement?

Posted by Adiasz on Stack Overflow See other posts from Stack Overflow or by Adiasz
Published on 2010-03-21T10:36:30Z Indexed on 2010/03/21 10:41 UTC
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Hello

I have two tables in database:

CREATE TABLE items(
 id SERIAL PRIMARy KEY,
 ... some other fields
);

This table contains come data row with unique ID.

CREATE TABLE some_choosen_data_in_order(
 id SERIAL PRIMARy KEY,
 id_items INTEGER[],

);

This table contains array type field. Each row contains values of IDs from table "items" in specyfic order. For example: {2,4,233,5}.

Now, I want to get data from table "items" for choosen row from table "some_choosen_data_in_order" with order for elements in array type.

The my attempt is JOIN:

SELECT I.* FROM items AS I 
JOIN some_choosen_data_in_order AS S ON I.id = ANY(S.id_items) WHERE S.id = ?

Second attempt was subquery like:

SELECT I.* FROM items AS I 
WHERE I.id = ANY 
(ARRAY[SELECT S.id_items FROM some_choosen_data_in_order  WHERE id = ?])

But none of them keep IDs order in array field. Could You help me, how to get data from "items" table with correspond with array IDs order from "some_choosen_data_in_order" table for specyfic row?

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