Show aggregate return types in psql \da output.

Greg Sabino Mullane

doc/src/sgml/ref/psql-ref.sgml

 <!--
-$PostgreSQL: pgsql/doc/src/sgml/ref/psql-ref.sgml,v 1.188 2007/03/03 17:19:11 momjian Exp $
+$PostgreSQL: pgsql/doc/src/sgml/ref/psql-ref.sgml,v 1.189 2007/03/16 08:28:01 mha Exp $
 PostgreSQL documentation
 -->
 
@@ -875,8 +875,8 @@ testdb=&gt;
 
         <listitem>
         <para>
-        Lists all available aggregate functions, together with the data
-        types they operate on. If <replaceable
+        Lists all available aggregate functions, together with their
+        return type and the data types they operate on. If <replaceable
         class="parameter">pattern</replaceable>
         is specified, only aggregates whose names match the pattern are shown.
         </para>

src/bin/psql/describe.c

@@ -3,7 +3,7 @@
  *
  * Copyright (c) 2000-2007, PostgreSQL Global Development Group
  *
- * $PostgreSQL: pgsql/src/bin/psql/describe.c,v 1.152 2007/02/20 10:23:38 petere Exp $
+ * $PostgreSQL: pgsql/src/bin/psql/describe.c,v 1.153 2007/03/16 08:28:01 mha Exp $
  */
 #include "postgres_fe.h"
 #include "describe.h"
@@ -62,6 +62,7 @@ describeAggregates(const char *pattern, bool verbose)
 	printfPQExpBuffer(&buf,
 					  "SELECT n.nspname as \"%s\",\n"
 					  "  p.proname AS \"%s\",\n"
+					  "  pg_catalog.format_type(p.prorettype, NULL) AS \"%s\",\n" 
 					  "  CASE WHEN p.pronargs = 0\n"
 					  "    THEN CAST('*' AS pg_catalog.text)\n"
 					  "    ELSE\n"
@@ -76,7 +77,7 @@ describeAggregates(const char *pattern, bool verbose)
 					  "FROM pg_catalog.pg_proc p\n"
 					  "     LEFT JOIN pg_catalog.pg_namespace n ON n.oid = p.pronamespace\n"
 					  "WHERE p.proisagg\n",
-					  _("Schema"), _("Name"),
+					  _("Schema"), _("Name"), _("Result data type"),
 					  _("Argument data types"), _("Description"));
 
 	processSQLNamePattern(pset.db, &buf, pattern, true, false,