doc: Postgres date-style date-only output is ISO

Backpatch to 9.3

Report from MauMau

diff --git a/doc/src/sgml/datatype.sgml b/doc/src/sgml/datatype.sgml
index b7d7d80028708c39e1dcc49e428fbeddae765e73..30fd9bb598d3e2af42151dba2cc22006a993e650 100644 (file)
--- a/doc/src/sgml/datatype.sgml
+++ b/doc/src/sgml/datatype.sgml
@@ -2205,8 +2205,10 @@ January 8 04:05:06 1999 PST
      historical accident.)  
      linkend="datatype-datetime-output-table"> shows examples of each
      output style.  The output of the date and
-     time types is of course only the date or time part
-     in accordance with the given examples.
+     time types is generally only the date or time part
+     in accordance with the given examples.  However, the
+     POSTGRES style outputs date-only values in
+     ISO format.