doc: change "cross product" to "Cartesian product"

Reported-by: Erik Wienhold
Discussion: https://postgr.es/m/2053109544.160895.1684955437950@office.mailbox.org

Author: Erik Wienhold

Backpatch-through: master

diff --git a/doc/src/sgml/queries.sgml b/doc/src/sgml/queries.sgml
index 3f9584928c516eb466129fe6c8ee3e38b39ccca1..8a4674e5f280a0e14d1f3d45e7e0a347105d14b3 100644 (file)
--- a/doc/src/sgml/queries.sgml
+++ b/doc/src/sgml/queries.sgml
@@ -392,7 +392,7 @@ FROM table_reference , table_r
         input tables.  As with USING, these columns appear
         only once in the output table.  If there are no common
         column names, NATURAL JOIN behaves like
-        JOIN ... ON TRUE, producing a cross-product join.
+        CROSS JOIN.
        
 
        
@@ -1362,7 +1362,7 @@ GROUPING SETS (
 
    
     If multiple grouping items are specified in a single GROUP BY
-    clause, then the final list of grouping sets is the cross product of the
+    clause, then the final list of grouping sets is the Cartesian product of the
     individual items.  For example:
 
 GROUP BY a, CUBE (b, c), GROUPING SETS ((d), (e))