MySQL錯誤＃1064在創建存儲過程

Question

下面是代碼：

IF(selected_item_id IS NOT NULL AND selected_category IS NOT NULL) THEN 

    IF(selected_item_id <> "all") THEN 

     SELECT i.id, i.name, i.summary, i.description, i.location, c.name AS 'category_name' FROM items i, categories c WHERE i.category_id = c.id AND i.id LIKE selected_item_id; 

    ELSE IF(selected_item_id = "all" AND selected_category <> "all" AND selected_category in (SELECT name FROM categories)) THEN 

     SELECT i.id, i.name, i.summary, i.description, i.location, c.name AS 'category_name' FROM items i, categories c WHERE i.category_id = c.id AND c.name LIKE selected_category; 

    ELSE IF(selected_item_id = "all" AND selected_category = "all") THEN 

     SELECT i.id, i.name, i.summary, i.description, i.location, c.name AS 'category_name' FROM items i, categories c WHERE i.category_id = c.id; 

    END IF 

END IF 

當我試圖挽救它，我得到：

MySQL表示：＃1064附近 'END IF' 的第17行（這是最後的END IF）

非常感謝幫助。

Answer 1

您不需要在ELSE和IF之間添加空格。詳細信息請參見this。最後以分號結尾。