Minor improvement to CREATE AGGREGATE docs: add an xref to the docs for

builtin aggregate functions.

diff --git a/doc/src/sgml/ref/create_aggregate.sgml b/doc/src/sgml/ref/create_aggregate.sgml
index 0a991619ea2da420ee392829ba7196c6983cac90..e3098538fac84e745531b6f933b2a8c4c80bbca3 100644 (file)
--- a/doc/src/sgml/ref/create_aggregate.sgml
+++ b/doc/src/sgml/ref/create_aggregate.sgml
@@ -1,5 +1,5 @@
 
 
@@ -34,12 +34,12 @@ CREATE AGGREGATE name (
   Description
 
   
-   CREATE AGGREGATE defines a new aggregate function. Some aggregate functions
-   for base types such as min(integer)
-   and avg(double precision) are already provided in the standard
-   distribution. If one defines new types or needs an aggregate function not
-   already provided, then CREATE AGGREGATE
-   can be used to provide the desired features.
+   CREATE AGGREGATE defines a new aggregate
+   function. Some basic and commonly-used aggregate functions are
+   included with the distribution; they are documented in 
+   linkend="functions-aggregate">. If one defines new types or needs
+   an aggregate function not already provided, then CREATE
+   AGGREGATE can be used to provide the desired features.