在查詢中使用UNION運算符創建mysql視圖

Question

我正在嘗試使用UNION運算符在其上創建sql視圖。在將它嵌入到視圖之前，我嘗試執行sql，結果是成功。但是，當我嘗試嵌入到創建視圖時，它返回了此錯誤

「錯誤代碼：1064 您的SQL語法有錯誤;請檢查與您的MySQL服務器版本對應的手冊，以獲取要使用的正確語法在8號線 附近 'UNION SELECT p.product_media_id AS media_id，p.product_title標題，p.product'「

我還保證所有列具有相同的數據類型。

SQL視圖：

CREATE 
/*[ALGORITHM = {UNDEFINED | MERGE | TEMPTABLE}] 
[DEFINER = { user | CURRENT_USER }] 
[SQL SECURITY { DEFINER | INVOKER }]*/ 
VIEW `mydbname`.`s_views` 
AS 
(SELECT c.media_id AS media_id, 
    c.title AS title, 
    c.title_slug AS slug, 
    c.content_one  AS description, 
    c.type AS cat 
FROM content_content c 
WHERE c.type = 'news' 
    OR c.type='travel_genius' 
    AND c.media_id IS NOT NULL 
    AND c.status = 1 
UNION 
SELECT p.product_media_id AS media_id, 
    p.product_title AS title, 
    p.product_title_slug AS slug, 
    p.product_description AS description, 
    'product' AS cat 
FROM p_views p 
WHERE p.product_media_id IS NOT NULL); 

Answer 1

它是在MySQL中的錯誤。這是觸發它的括號： -

http://bugs.mysql.com/bug.php?id=21614