MySQL聯盟輸出查詢

Question

如何獲取輸出或查詢行所在的表。 我需要知道輸出行包含哪個表。

sprinf(SELECT id,alias,title,id_category FROM blog_article 
UNION 
SELECT id,alias,title,id_category FROM forum_thread 
WHERE LOWER(title) LIKE '%s%%' LIMIT 5, $key); 

Answer 1

sprinf(SELECT "blog_article" as tbl,id,alias,title,id_category FROM blog_article 
UNION 
SELECT "forum_thread" as tbl,id,alias,title,id_category FROM forum_thread 
WHERE LOWER(title) LIKE '%s%%' LIMIT 5, $key); 

的行將要麼blog_article或forum_thread爲第一場「TBL」，從中可以找出行來到該表從