diff -r 57512456d26d trytond/ir/sequence.py
--- a/trytond/trytond/ir/sequence.py	Thu Mar 01 22:53:06 2018 +0100
+++ b/trytond/trytond/ir/sequence.py	Tue Apr 10 15:02:58 2018 +0200
@@ -163,10 +163,31 @@
         cursor = Transaction().cursor
         sql_name = self._sql_sequence_name
         if sql_sequence and not self._strict:
-            cursor.execute('SELECT '
-                'CASE WHEN NOT is_called THEN last_value '
-                    'ELSE last_value + increment_by '
-                'END FROM "%s"' % sql_name)
+            cursor.execute('SELECT version()')
+            cursor.execute('SHOW server_version_num')
+            version, = cursor.fetchone()
+            major, rest = divmod(int(version), 10000)
+            minor, patch = divmod(rest, 100)
+            version = (major, minor)
+            if version >= (10, 0):
+                param = Flavor.get().param
+                cursor.execute(
+                    'SELECT increment_by '
+                    'FROM pg_sequences '
+                    'WHERE sequencename=%s '
+                    % param, (sql_name,))
+                increment, = cursor.fetchone()
+                cursor.execute(
+                    'SELECT CASE WHEN NOT is_called THEN last_value '
+                    'ELSE last_value + %s '
+                    'END '
+                    'FROM "%s"' % (param, sql_name),
+                    (increment,))
+            else:
+                cursor.execute('SELECT '
+                    'CASE WHEN NOT is_called THEN last_value '
+                        'ELSE last_value + increment_by '
+                    'END FROM "%s"' % sql_name)
             return cursor.fetchone()[0]
         else:
             return self.number_next_internal