Current File : //usr/include/mysql/server/private/sql_tvc.h
/* Copyright (c) 2017, MariaDB
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_TVC_INCLUDED
#define SQL_TVC_INCLUDED
#include "sql_type.h"
typedef List<Item> List_item;
typedef bool (Item::*Item_processor) (void *arg);
class select_result;
class Explain_select;
class Explain_query;
class Item_func_in;
class st_select_lex_unit;
typedef class st_select_lex SELECT_LEX;
class Type_holder;
/**
@class table_value_constr
@brief Definition of a Table Value Construction(TVC)
It contains a list of lists of values which this TVC is defined by and
reference on SELECT where this TVC is defined.
*/
class table_value_constr : public Sql_alloc
{
public:
List<List_item> lists_of_values;
select_result *result;
SELECT_LEX *select_lex;
Type_holder *type_holders;
enum { QEP_NOT_PRESENT_YET, QEP_AVAILABLE} have_query_plan;
Explain_select *explain;
ulonglong select_options;
table_value_constr(List<List_item> tvc_values, SELECT_LEX *sl,
ulonglong select_options_arg) :
lists_of_values(tvc_values), result(0), select_lex(sl), type_holders(0),
have_query_plan(QEP_NOT_PRESENT_YET), explain(0),
select_options(select_options_arg)
{ };
ha_rows get_records() { return lists_of_values.elements; }
bool prepare(THD *thd_arg, SELECT_LEX *sl,
select_result *tmp_result,
st_select_lex_unit *unit_arg);
bool to_be_wrapped_as_with_tail();
int save_explain_data_intern(THD *thd_arg,
Explain_query *output);
bool optimize(THD *thd_arg);
bool exec(SELECT_LEX *sl);
void print(THD *thd_arg, String *str, enum_query_type query_type);
bool walk_values(Item_processor processor, bool walk_subquery, void *arg);
};
st_select_lex *wrap_tvc_with_tail(THD *thd, st_select_lex *tvc_sl);
#endif /* SQL_TVC_INCLUDED */
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