Re: INHERIT

Peter Harvey wrote: >If I try to get the columns from pg_attribute using the oid of a child >table created with INHERIT
Iget its columns AND all of its inherited >columns. > >How do I just get the columns added by the child table? > >I
figureI could check each column to see if they also exist in >pg_attribute under a parent table but I figure there must
bean >easier/faster way? Another pg_* table perhaps? Besides; I am not certian >this would work if there is a common
columnbetween a child and one of >its parents (if that is even allowed)? > >As usual, any help would be greatly
appreciated.
 

SELECT a.attname FROM pg_attribute AS a,      pg_class AS c,      pg_inherits AS i WHERE a.attrelid = c.oid AND
i.inhrelid= c.oid AND       c.relname = 'child_table'       AND a.attname NOT IN ( SELECT a.attname   FROM pg_attribute
ASa,        pg_class AS c,        pg_inherits AS i   WHERE i.inhrelid = c.oid AND         a.attrelid = i.inhparent AND
      c.relname = 'child_table' )
 


-- 
Oliver Elphick                                Oliver.Elphick@lfix.co.uk
Isle of Wight                              http://www.lfix.co.uk/oliver
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