column_statistics.h

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   it under the terms of the GNU General Public License, version 2.0,
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#ifndef DD_SYSTEM_VIEWS__COLUMN_STATISTICS_INCLUDED
#define DD_SYSTEM_VIEWS__COLUMN_STATISTICS_INCLUDED
 
#include "sql/dd/impl/system_views/system_view_definition_impl.h"
#include "sql/dd/impl/system_views/system_view_impl.h"
#include "sql/dd/string_type.h"
 
namespace dd {
namespace system_views {
 
/*
  The class representing INFORMATION_SCHEMA.COLUMN_STATISTICS system view
  definition.
*/
class Column_statistics
    : public System_view_impl<System_view_select_definition_impl> {
 public:
  enum enum_fields {
    FIELD_SCHEMA_NAME,
    FIELD_TABLE_NAME,
    FIELD_COLUMN_NAME,
    FIELD_HISTOGRAM
  };
 
  Column_statistics();
 
  static const Column_statistics &instance();
 
  static const String_type &view_name() {
    static String_type s_view_name("COLUMN_STATISTICS");
    return s_view_name;
  }
 
  const String_type &name() const override {
    return Column_statistics::view_name();
  }
};
 
}  // namespace system_views
}  // namespace dd
 
#endif  // DD_SYSTEM_VIEWS__COLUMN_STATISTICS_INCLUDED