mysql UNION 有重複的資料，如何解決

mysql UNION 有重複的資料，怎麼解決？
SELECT * , 1 AS xh
FROM text
WHERE (
id <312
AND `title` LIKE '%德國%'
AND `title` LIKE '%丹麥%'
)
UNION SELECT * , 2 AS xh
FROM text
WHERE (
id <312
AND `title` LIKE '%德國%'
OR `title` LIKE '%丹麥%'
)
ORDER BY xh
LIMIT 6

------解決方案--------------------
改成'x''X'.....這麼詭異的注意你也能想出來....嗯, 至少要加個注釋,要不將來被N個讀代碼的罵不要怪我.....

關於括弧:
id <312 AND `title` LIKE '%德國%' OR `title` LIKE '%丹麥%'
相當於 ( id <312 AND `title` LIKE '%德國%' ) OR `title` LIKE '%丹麥%'

這個和
id <312 AND ( `title` LIKE '%德國%' OR `title` LIKE '%丹麥%' )
是不同的, 應該明白了吧,

還不明白加條 有"丹麥"並且 id>312的記錄 並且能讓它排進前6的話就明白了
------解決方案--------------------
不至於搞得那麼複雜吧？

SQL code

SELECT * , 1 AS xhFROM textWHERE (id <312AND `title` LIKE '%德國%'AND `title` LIKE '%丹麥%')UNION SELECT * , 2 AS xhFROM textWHERE (id <312AND (`title` LIKE '%德國%')+(`title` LIKE '%丹麥%') = 1ORDER BY xhLIMIT 6
