diff --git a/doc/src/sgml/ref/select_into.sgml b/doc/src/sgml/ref/select_into.sgml
index 787c106..0226608 100644
--- a/doc/src/sgml/ref/select_into.sgml
+++ b/doc/src/sgml/ref/select_into.sgml
@@ -24,7 +24,7 @@ PostgreSQL documentation
 [ WITH [ RECURSIVE ] <replaceable class="parameter">with_query</replaceable> [, ...] ]
 SELECT [ ALL | DISTINCT [ ON ( <replaceable class="parameter">expression</replaceable> [, ...] ) ] ]
     * | <replaceable class="parameter">expression</replaceable> [ [ AS ] <replaceable class="parameter">output_name</replaceable> ] [, ...]
-    INTO [ TEMPORARY | TEMP ] [ TABLE ] <replaceable class="parameter">new_table</replaceable>
+    INTO [ TEMPORARY | TEMP | UNLOGGED ] [ TABLE ] <replaceable class="parameter">new_table</replaceable>
     [ FROM <replaceable class="parameter">from_item</replaceable> [, ...] ]
     [ WHERE <replaceable class="parameter">condition</replaceable> ]
     [ GROUP BY <replaceable class="parameter">expression</replaceable> [, ...] ]
@@ -65,6 +65,16 @@ SELECT [ ALL | DISTINCT [ ON ( <replaceable class="parameter">expression</replac
    </listitem>
   </varlistentry>
 
+  <varlistentry>
+   <term><literal>UNLOGGED</literal></term>
+   <listitem>
+    <para>
+     If specified, the table is created as an unlogged table.  Refer
+     to <xref linkend="sql-createtable"> for details.
+    </para>
+   </listitem>
+  </varlistentry>
+
    <varlistentry>
     <term><replaceable class="PARAMETER">new_table</replaceable></term>
     <listitem>
diff --git a/src/backend/commands/sequence.c b/src/backend/commands/sequence.c
index 80ad516..1326a97 100644
--- a/src/backend/commands/sequence.c
+++ b/src/backend/commands/sequence.c
@@ -119,6 +119,12 @@ DefineSequence(CreateSeqStmt *seq)
 	int			i;
 	NameData	name;
 
+	/* Unlogged sequences are not allowed. */
+	if (seq->sequence->relpersistence == RELPERSISTENCE_UNLOGGED)
+		ereport(ERROR,
+				(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
+				 errmsg("unlogged sequences are not supported")));
+
 	/* Check and set all option values */
 	init_params(seq->options, true, &new, &owned_by);
 
diff --git a/src/backend/commands/view.c b/src/backend/commands/view.c
index 22dfc92..1042195 100644
--- a/src/backend/commands/view.c
+++ b/src/backend/commands/view.c
@@ -465,6 +465,12 @@ DefineView(ViewStmt *stmt, const char *queryString)
 						view->relname)));
 	}
 
+	/* Unlogged views are not allowed. */
+	if (view->relpersistence == RELPERSISTENCE_UNLOGGED)
+		ereport(ERROR,
+				(errcode(ERRCODE_SYNTAX_ERROR),
+				 errmsg("views cannot be unlogged because they do not have storage")));
+
 	/*
 	 * Create the view relation
 	 *
diff --git a/src/test/regress/expected/create_view.out b/src/test/regress/expected/create_view.out
index f2c0685..557e077 100644
--- a/src/test/regress/expected/create_view.out
+++ b/src/test/regress/expected/create_view.out
@@ -281,4 +281,7 @@ drop cascades to table tbl3
 drop cascades to table tbl4
 drop cascades to view mytempview
 drop cascades to view pubview
+-- should fail
+CREATE UNLOGGED VIEW unlogged_view AS SELECT 1;
+ERROR:  views cannot be unlogged because they do not have storage
 SET search_path to public;
diff --git a/src/test/regress/expected/sequence.out b/src/test/regress/expected/sequence.out
index 13e1565..be25a32 100644
--- a/src/test/regress/expected/sequence.out
+++ b/src/test/regress/expected/sequence.out
@@ -291,3 +291,6 @@ ERROR:  permission denied for sequence seq3
 ROLLBACK;
 DROP USER seq_user;
 DROP SEQUENCE seq;
+-- should fail
+CREATE UNLOGGED SEQUENCE unlogged_seq;
+ERROR:  unlogged sequences are not supported
diff --git a/src/test/regress/sql/create_view.sql b/src/test/regress/sql/create_view.sql
index 86cfc51..d24ab1b 100644
--- a/src/test/regress/sql/create_view.sql
+++ b/src/test/regress/sql/create_view.sql
@@ -194,4 +194,7 @@ And relnamespace IN (SELECT OID FROM pg_namespace WHERE nspname LIKE 'pg_temp%')
 DROP SCHEMA temp_view_test CASCADE;
 DROP SCHEMA testviewschm2 CASCADE;
 
+-- should fail
+CREATE UNLOGGED VIEW unlogged_view AS SELECT 1;
+
 SET search_path to public;
diff --git a/src/test/regress/sql/sequence.sql b/src/test/regress/sql/sequence.sql
index 29ea691..3422b83 100644
--- a/src/test/regress/sql/sequence.sql
+++ b/src/test/regress/sql/sequence.sql
@@ -120,3 +120,6 @@ ROLLBACK;
 
 DROP USER seq_user;
 DROP SEQUENCE seq;
+
+-- should fail
+CREATE UNLOGGED SEQUENCE unlogged_seq;