Fix documentation of to_char/to_timestamp TZ, tz, OF formatting patterns.

These are only supported in to_char, not in the other direction, but the
documentation failed to mention that.  Also, describe TZ/tz as printing the
time zone "abbreviation", not "name", because what they print is elsewhere
referred to that way.  Per bug #14558.

diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index 2d11f5cc63921ea442e5adf61eff82c27e2e60e3..02dcd064374fb4e67e57f4bb8cfcfb08d0ef0009 100644 (file)
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -5723,11 +5723,13 @@ SELECT regexp_matches('abc01234xyz', '(?:(.*?)(\d+)(.*)){1,1}');
        
        
         TZ
-        upper case time-zone name
+        upper case time-zone abbreviation
+         (only supported in to_char)
        
        
         tz
-        lower case time-zone name
+        lower case time-zone abbreviation
+         (only supported in to_char)