doc: Update serial explanation

The CREATE SEQUENCE command should include a data type specification,
since PostgreSQL 10.

Reported-by: mjf@pearson.co.uk

diff --git a/doc/src/sgml/datatype.sgml b/doc/src/sgml/datatype.sgml
index 6fdcc12661b08df76d925b0aab1e557395a75586..281fdb6d600c3ad34a229660a16caee3cf1c73c2 100644 (file)
--- a/doc/src/sgml/datatype.sgml
+++ b/doc/src/sgml/datatype.sgml
@@ -861,7 +861,7 @@ CREATE TABLE <replaceable class="parameter">tablename</replaceable> (
      is equivalent to specifying:
 
 <programlisting>
-CREATE SEQUENCE <replaceable class="parameter">tablename</replaceable>_<replaceable class="parameter">colname</replaceable>_seq;
+CREATE SEQUENCE <replaceable class="parameter">tablename</replaceable>_<replaceable class="parameter">colname</replaceable>_seq AS integer;
 CREATE TABLE <replaceable class="parameter">tablename</replaceable> (
     <replaceable class="parameter">colname</replaceable> integer NOT NULL DEFAULT nextval('<replaceable class="parameter">tablename</replaceable>_<replaceable class="parameter">colname</replaceable>_seq')
 );