Re: Update a composite nested type variable

Luca Vernini wrote
> I'm writing a system with havy use of composite types.
> I have a doubt.
>
> I'm writing all in functions with language plpgsql.
> When I read a field from a composite type I must write something like
> this:
> status = ((in_customer.customer_data).customer_status).status_id
>
> And this works fine. I need to enclose the base type, but this is not a
> problem.
>
> When I need to assign a value I try to write something like:
> (in_customer.customer_data).field_a := NULL;
>
> But postgresql rise an error:
> ERROR: syntax error at or near "("
> SQL state: 42601
>
> If I dont use parentesis I rise a different error:
>
> ERROR: "in_customer.customer_data.field_a" is not a known variable
> SQL state: 42601
>
> 2 questions:
> Why is the behavior so different in read and in assign.
> How can I workaround this and update my values?
>
> Luca.

This may be a pl/pgsql limitation but you should probably provide a complete
self-contained example with your attempt so that user-error can be
eliminated.

David J.

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