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+/*****************************************************************************
+
+Copyright (c) 1997, 2016, Oracle and/or its affiliates. All Rights Reserved.
+Copyright (c) 2017, 2018, MariaDB Corporation.
+
+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 Street, Fifth Floor, Boston, MA 02110-1335 USA
+
+*****************************************************************************/
+
+/**************************************************//**
+@file include/pars0opt.h
+Simple SQL optimizer
+
+Created 12/21/1997 Heikki Tuuri
+*******************************************************/
+
+#ifndef pars0opt_h
+#define pars0opt_h
+
+#include "que0types.h"
+#include "pars0sym.h"
+#include "row0sel.h"
+
+/*******************************************************************//**
+Optimizes a select. Decides which indexes to tables to use. The tables
+are accessed in the order that they were written to the FROM part in the
+select statement. */
+void
+opt_search_plan(
+/*============*/
+	sel_node_t*	sel_node);	/*!< in: parsed select node */
+/*******************************************************************//**
+Looks for occurrences of the columns of the table in the query subgraph and
+adds them to the list of columns if an occurrence of the same column does not
+already exist in the list. If the column is already in the list, puts a value
+indirection to point to the occurrence in the column list, except if the
+column occurrence we are looking at is in the column list, in which case
+nothing is done. */
+void
+opt_find_all_cols(
+/*==============*/
+	ibool		copy_val,	/*!< in: if TRUE, new found columns are
+					added as columns to copy */
+	dict_index_t*	index,		/*!< in: index to use */
+	sym_node_list_t* col_list,	/*!< in: base node of a list where
+					to add new found columns */
+	plan_t*		plan,		/*!< in: plan or NULL */
+	que_node_t*	exp);		/*!< in: expression or condition */
+#ifdef UNIV_SQL_DEBUG
+/********************************************************************//**
+Prints info of a query plan. */
+void
+opt_print_query_plan(
+/*=================*/
+	sel_node_t*	sel_node);	/*!< in: select node */
+#endif /* UNIV_SQL_DEBUG */
+
+#endif