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Path: big/SRC/mariadb-11.7.2/storage/columnstore/columnstore/utils/regr/

✏️ Editing: covar_pop.h

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. */

/***********************************************************************
 *   $Id$
 *
 *   covar_pop.h
 ***********************************************************************/

/**
 * Columnstore interface for for the covar_pop function
 *
 *
 *    CREATE AGGREGATE FUNCTION covar_pop returns REAL soname 'libregr_mysql.so';
 *
 */
#pragma once

#include <cstdlib>
#include <string>
#include <vector>
#include <tr1/unordered_map>

#include "mcsv1_udaf.h"
#include "calpontsystemcatalog.h"
#include "windowfunctioncolumn.h"

#define EXPORT

namespace mcsv1sdk
{
// Return the covar_pop value of the dataset

class covar_pop : public mcsv1_UDAF
{
 public:
  // Defaults OK
  covar_pop() : mcsv1_UDAF(){};
  virtual ~covar_pop(){};

virtual ReturnCode init(mcsv1Context* context, ColumnDatum* colTypes);

virtual ReturnCode reset(mcsv1Context* context);

virtual ReturnCode nextValue(mcsv1Context* context, ColumnDatum* valsIn);

virtual ReturnCode subEvaluate(mcsv1Context* context, const UserData* valIn);

virtual ReturnCode evaluate(mcsv1Context* context, static_any::any& valOut);

virtual ReturnCode dropValue(mcsv1Context* context, ColumnDatum* valsDropped);

protected:
};

};  // namespace mcsv1sdk

#undef EXPORT

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