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851
by Brian Aker
Class rewrite of Session (aka get all of the junk out) |
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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
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* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
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*
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* Copyright (C) 2008 Sun Microsystems
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*
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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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*
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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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*
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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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*/
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#ifndef DRIZZLED_TMP_TABLE_PARAM_H
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#define DRIZZLED_TMP_TABLE_PARAM_H
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/*
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Param to create temporary tables when doing SELECT:s
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NOTE
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This structure is copied using memcpy as a part of JOIN.
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*/
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class Tmp_Table_Param :public Sql_alloc |
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{
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private: |
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/* Prevent use of these (not safe because of lists and copy_field) */
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Tmp_Table_Param(const Tmp_Table_Param &); |
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void operator=(Tmp_Table_Param &); |
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public: |
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1030.1.3
by Brian Aker
Final bits to structure alignment |
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KEY *keyinfo; |
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851
by Brian Aker
Class rewrite of Session (aka get all of the junk out) |
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List<Item> copy_funcs; |
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List<Item> save_copy_funcs; |
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1052.2.2
by Nathan Williams
No actual code changes. Changed Copy_field to CopyField, to reflect the coding standards. |
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CopyField *copy_field, *copy_field_end; |
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CopyField *save_copy_field, *save_copy_field_end; |
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851
by Brian Aker
Class rewrite of Session (aka get all of the junk out) |
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unsigned char *group_buff; |
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Item **items_to_copy; /* Fields in tmp table */ |
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MI_COLUMNDEF *recinfo,*start_recinfo; |
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ha_rows end_write_records; |
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1030.1.3
by Brian Aker
Final bits to structure alignment |
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uint32_t field_count; |
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uint32_t sum_func_count; |
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uint32_t func_count; |
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851
by Brian Aker
Class rewrite of Session (aka get all of the junk out) |
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uint32_t hidden_field_count; |
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1030.1.3
by Brian Aker
Final bits to structure alignment |
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uint32_t group_parts,group_length,group_null_parts; |
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uint32_t quick_group; |
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bool using_indirect_summary_function; |
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851
by Brian Aker
Class rewrite of Session (aka get all of the junk out) |
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bool schema_table; |
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1030.1.3
by Brian Aker
Final bits to structure alignment |
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851
by Brian Aker
Class rewrite of Session (aka get all of the junk out) |
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/*
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True if GROUP BY and its aggregate functions are already computed
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by a table access method (e.g. by loose index scan). In this case
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query execution should not perform aggregation and should treat
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aggregate functions as normal functions.
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*/
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bool precomputed_group_by; |
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1030.1.3
by Brian Aker
Final bits to structure alignment |
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851
by Brian Aker
Class rewrite of Session (aka get all of the junk out) |
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bool force_copy_fields; |
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1030.1.3
by Brian Aker
Final bits to structure alignment |
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/* If >0 convert all blob fields to varchar(convert_blob_length) */
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uint32_t convert_blob_length; |
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const CHARSET_INFO *table_charset; |
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851
by Brian Aker
Class rewrite of Session (aka get all of the junk out) |
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/*
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If true, create_tmp_field called from create_tmp_table will convert
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all BIT fields to 64-bit longs. This is a workaround the limitation
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that MEMORY tables cannot index BIT columns.
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*/
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bool bit_fields_as_long; |
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Tmp_Table_Param() |
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1030.1.3
by Brian Aker
Final bits to structure alignment |
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:copy_field(0), |
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group_parts(0), |
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group_length(0), |
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group_null_parts(0), |
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schema_table(false), |
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precomputed_group_by(false), |
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force_copy_fields(false), |
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convert_blob_length(0), |
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bit_fields_as_long(false) |
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851
by Brian Aker
Class rewrite of Session (aka get all of the junk out) |
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{}
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~Tmp_Table_Param() |
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{
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cleanup(); |
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}
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void init(void); |
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void cleanup(void); |
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};
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#endif /* DRIZZLED_TMP_TABLE_PARAM_H */ |