53 lines
1.8 KiB
C++
53 lines
1.8 KiB
C++
/* Copyright (c) 2018, 2019, Alibaba and/or its affiliates. All rights reserved.
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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 also distributed 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 included with MySQL.
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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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/*
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Parse tree node classes for extended hint syntax
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*/
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#ifndef PARSE_TREE_HINTS_EXT_INCLUDED
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#define PARSE_TREE_HINTS_EXT_INCLUDED
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#include "parse_tree_hints.h"
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class PT_hint_sample_percentage : public PT_hint {
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const LEX_CSTRING sample_pct;
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typedef PT_hint super;
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public:
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explicit PT_hint_sample_percentage(const LEX_CSTRING sample)
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: PT_hint(SAMPLE_PERCENTAGE_HINT_ENUM, true), sample_pct(sample) {}
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/**
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Function initializes SAMPLE_PERCENTAGE hint
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@param pc Pointer to Parse_context object
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@return true in case of error,
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false otherwise
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*/
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virtual bool contextualize(Parse_context *pc);
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};
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#endif
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