diff --git a/doc/src/sgml/ref/select.sgml b/doc/src/sgml/ref/select.sgml
index 0a19f894e70..ba14437764f 100644
--- a/doc/src/sgml/ref/select.sgml
+++ b/doc/src/sgml/ref/select.sgml
@@ -1,5 +1,5 @@
@@ -1457,6 +1457,19 @@ SELECT distributors.* WHERE distributors.name = 'Westward';
+
+ ONLY and Parentheses
+
+
+ The SQL standard requires parentheses around the table name
+ after ONLY, as in SELECT * FROM ONLY
+ (tab1), ONLY (tab2) WHERE .... PostgreSQL supports that
+ as well, but the parentheses are optional. (This point applies
+ equally to all SQL commands supporting the ONLY
+ option.)
+
+
+
Namespace Available to GROUP BY and ORDER BY