You've already forked mariadb-columnstore-engine
mirror of
https://github.com/mariadb-corporation/mariadb-columnstore-engine.git
synced 2025-07-29 08:21:15 +03:00
53b9a2a0f9
The idea is relatively simple - encode prefixes of collated strings as integers and use them to compute extents' ranges. Then we can eliminate extents with strings. The actual patch does have all the code there but miss one important step: we do not keep collation index, we keep charset index. Because of this, some of the tests in the bugfix suite fail and thus main functionality is turned off. The reason of this patch to be put into PR at all is that it contains changes that made CHAR/VARCHAR columns unsigned. This change is needed in vectorization work.
97 lines
2.4 KiB
C++
97 lines
2.4 KiB
C++
/* Copyright (C) 2014 InfiniDB, Inc.
|
|
|
|
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 Street, Fifth Floor, Boston,
|
|
MA 02110-1301, USA. */
|
|
|
|
//
|
|
// $Id: dictstep-jl.h 9655 2013-06-25 23:08:13Z xlou $
|
|
// C++ Interface: dictstep-js
|
|
//
|
|
// Description:
|
|
//
|
|
//
|
|
// Author: Patrick LeBlanc <pleblanc@calpont.com>, (C) 2008
|
|
//
|
|
// Copyright: See COPYING file that comes with this distribution
|
|
//
|
|
//
|
|
/** @file */
|
|
|
|
#pragma once
|
|
|
|
#include "jobstep.h"
|
|
#include "command-jl.h"
|
|
|
|
namespace joblist
|
|
{
|
|
class DictStepJL : public CommandJL
|
|
{
|
|
public:
|
|
DictStepJL();
|
|
DictStepJL(const pDictionaryStep&);
|
|
virtual ~DictStepJL();
|
|
|
|
void setLBID(uint64_t data, uint32_t dbroot); // converts a rid or dictionary token to an LBID. For
|
|
// ColumnCommandJL it's a RID, for a DictStep it's a token.
|
|
uint8_t getTableColumnType();
|
|
std::string toString();
|
|
|
|
/* XXXPAT: The width is only valid for projection steps and the output
|
|
type is TUPLE at the moment. */
|
|
void setWidth(uint16_t);
|
|
uint16_t getWidth();
|
|
|
|
CommandType getCommandType()
|
|
{
|
|
return DICT_STEP;
|
|
}
|
|
|
|
void createCommand(messageqcpp::ByteStream&) const;
|
|
void runCommand(messageqcpp::ByteStream&) const;
|
|
|
|
messageqcpp::ByteStream getFilterString() const
|
|
{
|
|
return filterString;
|
|
}
|
|
uint32_t getFilterCount() const
|
|
{
|
|
return filterCount;
|
|
}
|
|
messageqcpp::ByteStream reencodedFilterString() const;
|
|
|
|
uint8_t getBop() const
|
|
{
|
|
return BOP;
|
|
}
|
|
|
|
private:
|
|
DictStepJL(const DictStepJL&);
|
|
|
|
// uint64_t lbid;
|
|
// uint32_t fbo;
|
|
uint32_t traceFlags; // probably move this to Command
|
|
uint8_t BOP;
|
|
uint16_t colWidth;
|
|
int compressionType;
|
|
messageqcpp::ByteStream filterString;
|
|
uint32_t filterCount;
|
|
std::vector<std::string> eqFilter;
|
|
bool hasEqFilter;
|
|
uint8_t eqOp; // COMPARE_EQ or COMPARE_NE
|
|
uint32_t charsetNumber;
|
|
};
|
|
|
|
}; // namespace joblist
|