I think this is right..
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>