54 lines
2.2 KiB
C++
54 lines
2.2 KiB
C++
/* Copyright (c) 2000, 2024, Oracle and/or its affiliates.
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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, version 2.0,
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as published by the Free Software Foundation.
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This program is designed to work with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have either included with
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the program or referenced in the documentation.
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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, version 2.0, 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_RANGE_OPTIMIZER_RANGE_ANALYSIS_H_
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#define SQL_RANGE_OPTIMIZER_RANGE_ANALYSIS_H_
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#include "my_table_map.h"
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class SEL_TREE;
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class RANGE_OPT_PARAM;
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class Item;
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class THD;
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/*
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RangeAnalysisModule
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A module that accepts a condition, index (or partitioning) description,
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and builds lists of intervals (in index/partitioning space), such that
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all possible records that match the condition are contained within the
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intervals.
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The entry point for the range analysis module is get_mm_tree()
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(mm=min_max) function.
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The lists are returned in form of complicated structure of interlinked
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SEL_TREE/SEL_IMERGE/SEL_ROOT/SEL_ARG objects.
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See quick_range_seq_next, find_used_partitions for examples of how to walk
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this structure.
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All direct "users" of this module are located within this file, too.
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*/
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SEL_TREE *get_mm_tree(THD *thd, RANGE_OPT_PARAM *param, table_map prev_tables,
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table_map read_tables, table_map current_table,
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bool remove_jump_scans, Item *cond);
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#endif // SQL_RANGE_OPTIMIZER_RANGE_ANALYSIS_H_
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