Re: iterating over relation's attributes

Tom Lane wrote:
> Andrew Dunstan <andrew@dunslane.net> writes:
>   
>> What is the approved way to iterate over a relation's attributes?
>>     
>
> Most places scan through the relation's tuple descriptor, rather
> than expending multiple catalog lookups in pg_attribute.
>
>     
>   

Doesn't that require me to open the relation? Is that a good thing if I 
wouldn't otherwise be doing that?

This is in the context of making CheckAttributeType recurse into 
composite types.

cheers

andrew