/* Copyright (c) 2006, 2010, Oracle and/or its affiliates. All rights reserved.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; version 2 of the License.

   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 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 SQL_DERIVED_INCLUDED
#define SQL_DERIVED_INCLUDED

struct TABLE_LIST;
class THD;
struct LEX;

bool mysql_handle_derived(LEX *lex, uint phases);
bool mysql_handle_single_derived(LEX *lex, TABLE_LIST *derived, uint phases);
bool mysql_derived_reinit(THD *thd, LEX *lex, TABLE_LIST *derived);

/**
   Cleans up the SELECT_LEX_UNIT for the derived table (if any).

   @param  thd         Thread handler
   @param  lex         LEX for this thread
   @param  derived     TABLE_LIST for the derived table

   @retval  false  Success
   @retval  true   Failure
*/
bool mysql_derived_cleanup(THD *thd, LEX *lex, TABLE_LIST *derived);

Item *delete_not_needed_parts(THD *thd, Item *cond);

bool pushdown_cond_for_derived(THD *thd, Item *cond, TABLE_LIST *derived);

#endif /* SQL_DERIVED_INCLUDED */