diff --git a/doc/src/sgml/syntax.sgml b/doc/src/sgml/syntax.sgml
index 37817d06384..4dfbbd08626 100644
--- a/doc/src/sgml/syntax.sgml
+++ b/doc/src/sgml/syntax.sgml
@@ -1065,6 +1065,18 @@ CAST ( '<replaceable>string</replaceable>' AS <replaceable>type</replaceable> )
        <entry>unary plus, unary minus</entry>
       </row>
 
+      <row>
+       <entry><token>COLLATE</token></entry>
+       <entry>left</entry>
+       <entry>collation selection</entry>
+      </row>
+
+      <row>
+       <entry><token>AT</token></entry>
+       <entry>left</entry>
+       <entry><literal>AT TIME ZONE</literal>, <literal>AT LOCAL</literal></entry>
+      </row>
+
       <row>
        <entry><token>^</token></entry>
        <entry>left</entry>
diff --git a/src/backend/parser/gram.y b/src/backend/parser/gram.y
index c224df4eccc..8c00b119ec4 100644
--- a/src/backend/parser/gram.y
+++ b/src/backend/parser/gram.y
@@ -858,7 +858,7 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
 %left		'*' '/' '%'
 %left		'^'
 /* Unary Operators */
-%left		AT				/* sets precedence for AT TIME ZONE */
+%left		AT				/* sets precedence for AT TIME ZONE, AT LOCAL */
 %left		COLLATE
 %right		UMINUS
 %left		'[' ']'