innodb部分内部操作

tab_node_t*
tab_create_graph_create(
/*====================*/
  dict_table_t* table,  /*!< in: table to create, built as a memory data
        structure */
  mem_heap_t* heap, /*!< in: heap where created */
  fil_encryption_t mode,  /*!< in: encryption mode */
  const CreateInfoEncryptionKeyId &create_info_encryption_key_id) /*!< in: encryption key_id */
{
  tab_node_t* node;

  node = static_cast<tab_node_t*>(
    mem_heap_alloc(heap, sizeof(tab_node_t)));

  node->common.type = QUE_NODE_CREATE_TABLE;

  node->table = table;

  node->state = TABLE_BUILD_TABLE_DEF;
  node->heap = mem_heap_create(256);
        node->mode= mode;
        node->create_info_encryption_key_id= create_info_encryption_key_id;

  node->tab_def = ins_node_create(INS_DIRECT, dict_sys->sys_tables,
          heap);
  node->tab_def->common.parent = node;

  node->col_def = ins_node_create(INS_DIRECT, dict_sys->sys_columns,
          heap);
  node->col_def->common.parent = node;

  node->v_col_def = ins_node_create(INS_DIRECT, dict_sys->sys_virtual,
                                          heap);
  node->v_col_def->common.parent = node;

  return(node);
}

先创建一个执行树，按照执行树执行