| From: | Peter Eisentraut <peter_e(at)gmx(dot)net> |
|---|---|
| To: | Patrick Welche <prlw1(at)newn(dot)cam(dot)ac(dot)uk> |
| Cc: | <pgsql-patches(at)postgresql(dot)org> |
| Subject: | Re: doc fix |
| Date: | 2002-02-11 16:07:19 |
| Message-ID: | Pine.LNX.4.30.0202111107010.686-100000@peter.localdomain |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-patches |
Patrick Welche writes:
> I think this is right..
No, it's talking about relational algebra, not SQL.
>
> Patrick
>
> Index: sql.sgml
> ===================================================================
> RCS file: /projects/cvsroot/pgsql/doc/src/sgml/sql.sgml,v
> retrieving revision 1.24
> diff -p -r1.24 sql.sgml
> *** sql.sgml 2001/10/23 16:42:36 1.24
> --- sql.sgml 2002/02/11 15:37:47
> *************** attributes are taken from. We often writ
> *** 488,494 ****
>
> <listitem>
> <para>
> ! DIFFERENCE (− or ∖): builds the set difference of
> two tables. Let <classname>R</classname> and <classname>S</classname>
> again be two tables with the same
> arity. <classname>R</classname> - <classname>S</classname>
> --- 488,494 ----
>
> <listitem>
> <para>
> ! EXCEPT (− or ∖): builds the set difference of
> two tables. Let <classname>R</classname> and <classname>S</classname>
> again be two tables with the same
> arity. <classname>R</classname> - <classname>S</classname>
>
--
Peter Eisentraut peter_e(at)gmx(dot)net
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