Re: ALTER SET DISTINCT vs. Oracle-like DBMS_STATS

Itagaki Takahiro escribió:

> It is just similar to Oracle's DBMS_STATS package.
> http://download.oracle.com/docs/cd/B28359_01/appdev.111/b28419/d_stats.htm
> If it were, "ALTER TABLE tablename ALTER COLUMN 3rd-column SET DISITNCT 100"
> could be written as:
> 
>     INSERT INTO dbms_stats.columns(starelid, ataattnum, stadistinct)
>       VALUES ('tablename'::regclass, 3, 100);
> 
> Of course ALTER SET DISTINCT is easy-to-use, so it could be an alias for
> the above INSERT command.

Why wouldn't you implement this through reloptions?  (I ask because the
syntax you propose above is awfully similar to what we used for
pg_autovacuum, which ended up being replaced by reloptions)

-- 
Alvaro Herrera                                http://www.CommandPrompt.com/
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