Minor doc tweak: "NOT NULL" is redundant with "SERIAL" in example.

diff --git a/doc/src/sgml/ref/create_domain.sgml b/doc/src/sgml/ref/create_domain.sgml
index db015e15537005ce8e2b3ebfc329ac42577ab3ab..4beb0ae53b8393ce7066f37ea687faa7aa0edd84 100644 (file)
--- a/doc/src/sgml/ref/create_domain.sgml
+++ b/doc/src/sgml/ref/create_domain.sgml
@@ -1,5 +1,5 @@
 
 
@@ -20,7 +20,7 @@ PostgreSQL documentation
 
  
 
-CREATE DOMAIN name [AS] data_type
+CREATE DOMAIN name [ AS ] data_type
     [ DEFAULT expression ]
     [ constraint [ ... ] ]
 
@@ -185,7 +185,7 @@ OR VALUE ~ '^\\d{5}-\\d{4}$'
 );
 
 CREATE TABLE us_snail_addy (
-  address_id SERIAL NOT NULL PRIMARY KEY
+  address_id SERIAL PRIMARY KEY
 , street1 TEXT NOT NULL
 , street2 TEXT
 , street3 TEXT