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Question

我想從數據庫中獲取行的ID不等於鏈接表中ID的返回值。這可以通過連接完成嗎？

select * 
    from module_items_profile people 
     where people.item_id not in (
      select link.people_id 
        from link_page_people link 
         where link.page_id = $page_id 
         ) 

謝謝。

Answer 1

是的，但使用LEFT JOIN與IS NULL斷言：

select * 
from module_items_profile AS people 
LEFT JOIN 
(
    SELECT * 
    FROM link_page_people 
    where page_id = $page_id 
) AS link ON people.item_id = link.people_id 
WHERE link.people_id IS NULL;