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76 lines
2.4 KiB
Objective-C
76 lines
2.4 KiB
Objective-C
/* Copyright (c) 2017, MariaDB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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#ifndef SQL_TVC_INCLUDED
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#define SQL_TVC_INCLUDED
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#include "sql_type.h"
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typedef List<Item> List_item;
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typedef bool (Item::*Item_processor) (void *arg);
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class select_result;
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class Explain_select;
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class Explain_query;
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class Item_func_in;
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class st_select_lex_unit;
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typedef class st_select_lex SELECT_LEX;
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class Type_holder;
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/**
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@class table_value_constr
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@brief Definition of a Table Value Construction(TVC)
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It contains a list of lists of values which this TVC is defined by and
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reference on SELECT where this TVC is defined.
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*/
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class table_value_constr : public Sql_alloc
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{
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public:
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List<List_item> lists_of_values;
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select_result *result;
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SELECT_LEX *select_lex;
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Type_holder *type_holders;
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enum { QEP_NOT_PRESENT_YET, QEP_AVAILABLE} have_query_plan;
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Explain_select *explain;
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ulonglong select_options;
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table_value_constr(List<List_item> tvc_values, SELECT_LEX *sl,
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ulonglong select_options_arg) :
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lists_of_values(tvc_values), result(0), select_lex(sl), type_holders(0),
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have_query_plan(QEP_NOT_PRESENT_YET), explain(0),
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select_options(select_options_arg)
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{ };
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ha_rows get_records() { return lists_of_values.elements; }
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bool prepare(THD *thd_arg, SELECT_LEX *sl,
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select_result *tmp_result,
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st_select_lex_unit *unit_arg);
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bool to_be_wrapped_as_with_tail();
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int save_explain_data_intern(THD *thd_arg,
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Explain_query *output);
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bool optimize(THD *thd_arg);
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bool exec(SELECT_LEX *sl);
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void print(THD *thd_arg, String *str, enum_query_type query_type);
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bool walk_values(Item_processor processor, bool walk_subquery, void *arg);
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};
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st_select_lex *wrap_tvc_with_tail(THD *thd, st_select_lex *tvc_sl);
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#endif /* SQL_TVC_INCLUDED */
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