/* Copyright (c) 2017, 2024, Oracle and/or its affiliates.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License, version 2.0,
   as published by the Free Software Foundation.

   This program is designed to work with certain software (including
   but not limited to OpenSSL) that is licensed under separate terms,
   as designated in a particular file or component or in included license
   documentation.  The authors of MySQL hereby grant you an additional
   permission to link the program and your derivative works with the
   separately licensed software that they have either included with
   the program or referenced in the documentation.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License, version 2.0, for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA
*/

#ifndef WINDOW_LEX_INCLUDED
#define WINDOW_LEX_INCLUDED

/**
  Cf. SQL 2003 7.11 \<window frame units\> and class PT_border
*/
enum enum_window_frame_unit { WFU_ROWS, WFU_RANGE, WFU_GROUPS };

/**
  Cf. SQL 2003 7.11 \<window frame extent\> and class PT_border
  The Window::comparators array depends on the order of values in this enum.
*/
enum enum_window_border_type {
  WBT_CURRENT_ROW = 0,
  WBT_VALUE_PRECEDING,
  WBT_VALUE_FOLLOWING,
  WBT_UNBOUNDED_PRECEDING,
  WBT_UNBOUNDED_FOLLOWING,
};

/**
  Cf. SQL 2003 7.11 \<window frame exclusion\> and class PT_exclusion
*/
enum enum_window_frame_exclusion {
  WFX_CURRENT_ROW,
  WFX_GROUP,
  WFX_TIES,
  WFX_NO_OTHERS
};

/**
  Cf. SQL 2011 6.10 null treatment
*/
enum enum_null_treatment { NT_NONE, NT_RESPECT_NULLS, NT_IGNORE_NULLS };

/**
  Cf. SQL 2011 6.10 from first or last
*/
enum enum_from_first_last { NFL_NONE, NFL_FROM_FIRST, NFL_FROM_LAST };

#endif /* WINDOW_LEX_INCLUDED */