column_statistics.cc

/* Copyright (c) 2017, 2023, Oracle and/or its affiliates.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License, version 2.0,
   as published by the Free Software Foundation.

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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License, version 2.0, for more details.

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   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */

#include "sql/dd/impl/system_views/column_statistics.h"

namespace dd {
namespace system_views {

const Column_statistics &Column_statistics::instance() {
  static Column_statistics *s_instance = new Column_statistics();
  return *s_instance;
}

Column_statistics::Column_statistics() {
  m_target_def.set_view_name(view_name());

  m_target_def.add_field(FIELD_SCHEMA_NAME, "SCHEMA_NAME", "SCHEMA_NAME");
  m_target_def.add_field(FIELD_TABLE_NAME, "TABLE_NAME", "TABLE_NAME");
  m_target_def.add_field(FIELD_COLUMN_NAME, "COLUMN_NAME", "COLUMN_NAME");
  m_target_def.add_field(FIELD_HISTOGRAM, "HISTOGRAM", "HISTOGRAM");
  m_target_def.add_from("mysql.column_statistics");
  m_target_def.add_where("CAN_ACCESS_TABLE(SCHEMA_NAME, TABLE_NAME)");
}

}  // namespace system_views
}  // namespace dd