Update GRANT USAGE on schema permission description.

diff --git a/doc/src/sgml/ref/grant.sgml b/doc/src/sgml/ref/grant.sgml
index 8230f2078bf066f7b432ca77d60a57127743cbcf..e7ca4d1ba94c5dfe52bc331a7b160c4e79c83771 100644 (file)
--- a/doc/src/sgml/ref/grant.sgml
+++ b/doc/src/sgml/ref/grant.sgml
@@ -1,5 +1,5 @@
 
 
@@ -276,8 +276,8 @@ GRANT role [, ...]
        schema (assuming that the objects' own privilege requirements are
        also met).  Essentially this allows the grantee to look up
        objects within the schema.  Without this permission, it is still
-       possible to see the object names by querying the system tables, but
-       they cannot be accessed via SQL.
+       possible to see the object names, e.g. by querying the system tables,
+       so this is not a completely secure way to prevent object access.
       
       
        For sequences, this privilege allows the use of the