Обсуждение: inheritance/oid questions

Suppose I have table a and b (b inherits a).

Then I do select * from a*;

Now, I'd like to know which table this particular row came from (a or b).
Is this possible? Or do I have to have a column where I'd store what kind
of object this is?

-alex

In the up and coming version of postgres there will be a special column
called "tableoid" which gives the oid from pg_class of the table it came
from. If you are not using the current CVS sources, you will have to
keep a column updated yourself.

Alex Pilosov wrote:
> 
> Suppose I have table a and b (b inherits a).
> 
> Then I do select * from a*;
> 
> Now, I'd like to know which table this particular row came from (a or b).
> Is this possible? Or do I have to have a column where I'd store what kind
> of object this is?
> 
> -alex

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Chris Bitmead
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