Add documentation example of using interval multiplication with 'days'.

Backpatch to 8.1.X.

diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index 914d6d64a31c7c2927db55d92008d72ea87fcf19..86e01ff113d7021c2dd5a02d37e3c5b83221b165 100644 (file)
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -1,5 +1,5 @@
 
 
@@ -5207,6 +5207,12 @@ SELECT SUBSTRING('XY1234Z', 'Y*?([0-9]{1,3})');
         interval '00:15:00'
        
 
+       
+         * 
+        21 * interval '1 day'
+        interval '21 days'
+       
+
        
          * 
         double precision '3.5' * interval '1 hour'