column_statistics.h

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#ifndef DD_TABLES__COLUMN_STATISTICS_INCLUDED
#define DD_TABLES__COLUMN_STATISTICS_INCLUDED
 
#include "sql/dd/impl/types/entity_object_table_impl.h"
#include "sql/dd/object_id.h"  // Object_id
#include "sql/dd/string_type.h"
#include "sql/dd/types/column_statistics.h"
 
namespace dd {
 
class Dictionary_object;
class Item_name_key;
class Object_key;
class Raw_record;
 
namespace tables {
 
///////////////////////////////////////////////////////////////////////////
 
class Column_statistics final : public Entity_object_table_impl {
 public:
  static const Column_statistics &instance();
 
  enum enum_fields {
    FIELD_ID = static_cast<uint>(Common_field::ID),
    FIELD_CATALOG_ID,
    FIELD_NAME,
    FIELD_SCHEMA_NAME,
    FIELD_TABLE_NAME,
    FIELD_COLUMN_NAME,
    FIELD_HISTOGRAM,
    FIELD_OPTIONS,
    NUMBER_OF_FIELDS  // Always keep this entry at the end of the enum
  };
 
  enum enum_indexes {
    INDEX_PK_ID = static_cast<uint>(Common_index::PK_ID),
    INDEX_UK_CATALOG_ID_NAME = static_cast<uint>(Common_index::UK_NAME),
    INDEX_UK_CATALOG_ID_SCHEMA_NAME_TABLE_NAME_COLUMN_NAME
  };
 
  enum enum_foreign_keys { FK_CATALOG_ID };
 
  Column_statistics();
 
  dd::Column_statistics *create_entity_object(
      const Raw_record &) const override;
 
  static bool update_object_key(Item_name_key *key, Object_id catalog_id,
                                const String_type &name);
 
  static Object_key *create_key_by_catalog_id(Object_id catalog_id);
};
 
///////////////////////////////////////////////////////////////////////////
 
}  // namespace tables
}  // namespace dd
 
#endif  // DD_TABLES__COLUMN_STATISTICS_INCLUDED