Why do you think you need an array of theType v. a dependent table of theType. 
This tack is of course immune to to most future type changess. 

Sent from my iPhone

> On Apr 20, 2014, at 11:57 AM, Dorian Hoxha <dorian.ho...@gmail.com> wrote:
> 
> Was just curious about the overhead.
> 
> I know the columns, but i may need to add other columns in the future.
> Yeah, json is the alternative if this doesn't work.
> 
> 
> 
>> On Sun, Apr 20, 2014 at 7:54 PM, Fede Martinez <federicoemarti...@gmail.com> 
>> wrote:
>> If you don't know the columns your type will have, you could consider using 
>> json or hstore if the data is unstructured.
>> 
>> El 20/04/2014 14:04, "Dorian Hoxha" <dorian.ho...@gmail.com> escribió:
>> 
>>> Hi list,
>>> 
>>> I have a 
>>> create type thetype(width integer, height integer);
>>> create table mytable(thetype thetype[]);
>>> 
>>> How can i make an insert statement so if i later add fields to the 
>>> composite type, the code/query doesn't break ? 
>>> Maybe by specifying the fields of the composite type in the query ?
>>> 
>>> This can be done for normal inserts(non arrays):
>>> CREATE TABLE mytable (t thetype);
>>> INSERT INTO mytable(t.width, t.height) VALUES (11,22);
>>> 
>>> 
>>> Also how to update an whole element of an array of composites ? 
>>> Also, how to update an attribute in a specific element in an array of 
>>> composites?
>>> 
>>> (so when i add columns later to the composite, my old code doesn't break) 
>>> 
>>> How much overhead have the composite types beside the values and nulls?
>>> 
>>> Thanks
> 

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