diff --git a/doc/src/sgml/ref/select.sgml b/doc/src/sgml/ref/select.sgml
index 0ffc9cecb73..9ace534bc31 100644
--- a/doc/src/sgml/ref/select.sgml
+++ b/doc/src/sgml/ref/select.sgml
@@ -1,5 +1,5 @@
@@ -618,7 +618,7 @@ ORDER BY expression [ ASC | DESC |
The ordinal number refers to the ordinal (left-to-right) position
of the result column. This feature makes it possible to define an ordering
- on the basis of a column that does not have a proper name.
+ on the basis of a column that does not have a unique name.
This is never absolutely necessary because it is always possible
to assign a name to a result column using the AS clause, e.g.:
@@ -663,6 +663,12 @@ SELECT name FROM distributors ORDER BY code;
descending sort order nulls sort at the beginning.
+
+ Data of character types is sorted according to the locale-specific
+ collation order that was established when the database cluster
+ was initialized.
+
+