問題你應該看看我想在這裏做的，但它不工作UNION和ORDER BY在MySQL
$getquery = "SELECT *
FROM highscore
WHERE score >= '$score'
ORDER BY score ASC
LIMIT 6
UNION
SELECT *
FROM highscore
WHERE score < '$score'
ORDER BY score DESC
LIMIT 5";
mysql_error()回報：「ORDER的不當使用BY與UNION」。
嘗試：
$getquery = "(SELECT *
FROM highscore
WHERE score >= '$score'
ORDER BY score ASC
LIMIT 6)
UNION ALL -- guaranteed to be beneficial in this case as Johan commented
(SELECT *
FROM highscore
WHERE score < '$score'
ORDER BY score DESC
LIMIT 5)";
見comments to my answer on the related question。
或consult the fine manual。
另外@CanSpice，每個子選擇都不需要自己的別名嗎？並且'UNION ALL'會快得多，尤其是因爲這裏不會有重疊。 – Johan
@Johan;這些不是實際的子選擇，所以它們不是。我添加了一個鏈接到mysql文檔。但是'聯盟全部'好點！ –
通過或LIMIT應用於爲了將個人選擇，將子句括起來，括號內的SELECT：
(SELECT *
FROM highscore
WHERE score >= '$score'
ORDER BY score ASC
LIMIT 6)
UNION
(SELECT *
FROM highscore
WHERE score < '$score'
ORDER BY score DESC
LIMIT 5)
聯合查詢通常僅能在最後一個查詢是聯合在一起的order by語句，這適用於工會的結果。使用括號（如下面Erwin的答案）可以讓您單獨查詢並繞過此限制。 –