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

diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index 5982f57ad1f1de2c85dc280ae7b1d674d6d3897e..b1669cc0f7af6aaf7757411b2a9837a2e3b9fab5 100644 (file)
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -5934,6 +5934,7 @@ date_trunc('<replaceable>field</replaceable>', <replaceable>source</replaceable>
      <member><literal>day</literal></member>
      <member><literal>week</literal></member>
      <member><literal>month</literal></member>
+     <member><literal>quarter</literal></member>
      <member><literal>year</literal></member>
      <member><literal>decade</literal></member>
      <member><literal>century</literal></member>