date_trunc also accepts 'quarter'. Noted by Yoshihisa Nakano.

diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index 6cb3be3b740ec3b6abeb9ccf59d10ea5987d4ff8..ee913ce40d4846559eece9f45cc220feb881f5a7 100644 (file)
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -1,4 +1,4 @@
-
+
 
  
   Functions and Operators
@@ -6027,6 +6027,7 @@ date_trunc('field', source
      day
      week
      month
+     quarter
      year
      decade
      century