Add markup for new constraint_name mention.

diff --git a/doc/src/sgml/ref/create_table.sgml b/doc/src/sgml/ref/create_table.sgml
index 2c5e14caf2438ad097560684e5c6d1ee8299f426..49e849b959483bd1e57e03eafef90c5ad68d63e8 100644 (file)
--- a/doc/src/sgml/ref/create_table.sgml
+++ b/doc/src/sgml/ref/create_table.sgml
@@ -1,5 +1,5 @@
 
 
@@ -295,9 +295,10 @@ and table_constraint is:
      
       An optional name for a column or table constraint.  If the
       constraint is violated, the constraint name is present in error messages,
-      so constraint names like "col must be positive" can be used to communicate
-      helpful constraint information to client applications.  If not specified,
-      the system generates a name.
+      so constraint names like "col must be positive" can be used
+      to communicate helpful constraint information to client applications.
+      (Double-quotes are required for constraint names that contain spaces.)
+      If not specified, the system generates a name.