本文介紹了帶有 Desc/Asc 排序的 Order By 子句的 Case 語(yǔ)句的處理方法,對(duì)大家解決問(wèn)題具有一定的參考價(jià)值,需要的朋友們下面隨著小編來(lái)一起學(xué)習(xí)吧!
問(wèn)題描述
SELECT *
FROM
TableName
WHERE
ORDER BY
CASE @OrderByColumn
WHEN 1 THEN Forename
WHEN 2 THEN Surname
END;
我有一個(gè)類似上面的語(yǔ)句,它讓我可以動(dòng)態(tài)地選擇如何對(duì)查詢結(jié)果進(jìn)行排序.但是,如何指定我想要 Forename 訂購(gòu)的 DESC
和 Surname ASC
?
I have a statement like above which lets me dynamically choose how to order the results of a query. However, how do I specify that I want the Forename ordered DESC
and the Surname ASC
?
推薦答案
你需要把你的ORDER BY
分成兩部分:
You need to split your ORDER BY
in two parts:
SELECT *
FROM
TableName
WHERE
ORDER BY
(CASE @OrderByColumn
WHEN 1 THEN Forename
END) DESC -- Forename --> descending
, (CASE @OrderByColumn
WHEN 2 THEN Surname
END) ASC -- Surname --> ascending
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