Re: select from composite type

On 2/4/24 14:50, Lorusso Domenico wrote:
> Hello guys,
> I'm trying to find out the equivalent behaviour of unnest, when I've got
> just a composite type.
>
> This is the statement is something like that (but more complex):
>
>  _sqlUpdate text=$$
> with s as (
> select * from ($1)
> )
> update myView as q set
> (attribute_fullname, modify_user_id)
> =(s.attribute_fullname, $2)
> where  s.product_code=q.product_code
> and s.attribute_uid=q.attribute_uid
> $$;
>
> And I use this command.
> execute _sqlUpdate using  attribute_list[_i], _modify_user_id;

Is the above in a plpgsql function?

>
> attribute_list is  an array of composite type (with 20 fields).

I am trying to wrap my head around "array of composite type". Please
provide an example.

>
> If I use the unnest with the entire array the sql works, but I can't
> find a way to treat the single record as a row of  a table.
>
>
> Any suggestions?
>
> Bye and thanks'
>
> Domenico

--
Adrian Klaver
adrian(dot)klaver(at)aklaver(dot)com