virtual Field *make_table_field(MEM_ROOT *root,

                                  const LEX_CSTRING *name,

                                  const Record_addr &addr,

                                  const Type_all_attributes &attr,

                                  TABLE *table) const= 0;

  virtual Field *

  make_table_field_from_def(TABLE_SHARE *share,

                            MEM_ROOT *mem_root,

                            const LEX_CSTRING *name,

                            const Record_addr &addr,

                            const Bit_addr &bit,

                            const Column_definition_attributes *attr,

                            uint32 flags) const= 0;