mysql 服务器端命令源码（四）--show create table / view

bool
mysqld_show_create(THD *thd, TABLE_LIST *table_list)
{
Protocol *protocol= thd->protocol;
char buff[2048];
String buffer(buff, sizeof(buff), system_charset_info);
DBUG_ENTER("mysqld_show_create");
DBUG_PRINT("enter",("db: %s table: %s",table_list->db,
table_list->table_name));

/* We want to preserve the tree for views. */
thd->lex->view_prepare_mode= TRUE;

{
Show_create_error_handler view_error_suppressor(thd, table_list);
thd->push_internal_handler(&view_error_suppressor);
bool error= open_normal_and_derived_tables(thd, table_list, 0);
thd->pop_internal_handler();
if (error && (thd->killed || thd->is_error()))
DBUG_RETURN(TRUE);
}

/* TODO: add environment variables show when it become possible */
if (thd->lex->only_view && !table_list->view)
{
my_error(ER_WRONG_OBJECT, MYF(0),
table_list->db, table_list->table_name, "VIEW");
DBUG_RETURN(TRUE);
}
视图和表展示的区别