Re: [HACKERS] Re: [QUESTIONS] using composite types

> What you want to do can probably be accomplished with inheritance, but
> that only seems to work if you have unique names for more of your
> fields:
> 
>   create table A ( a int, b int);
>   create table D ( c int) inherits (A);
> 
> But, if you try
> 
>   create table D ( b int) inherits (A);
> 
> then the new column in D gets lost without warning!


Patient:  Ow, doctor, it hurts when I do this.
Doctor:   Well, then don't do that.

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This is a pretty bizarre example, and I am not sure how the system will
handle this.  My guess is that it finds only the first b.  Seems like we
need a check somewhere when making inheritance.  I will add it to the
TODO.

	* disallow inherited columns with the same name as new columns

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