如何在MYSQL

Question

使用SELECT內COUNT我有這樣的看法：

MyView的：（ID，百分比）

我要讓另一種觀點，至極將是這樣的：

LASTVIEW： （lastID，lastPR，計數器）

和「evrey line」中的「counter」我想知道money id的百分比大於這一行的百分比。所以我嘗試過：

CREATE VIEW LASTVIEW(lastID, lastPR, counter) AS 
SELECT id AS lastID, percent AS lastPR 
COUNT (SELECT id FROM myVIEW WHERE percent < lastPR) AS counter, 
FROM myVIEW; 

Answer 1

你幾乎在那裏。試試這個：

SELECT id AS lastID, percent AS lastPR, (SELECT Count(id) 
FROM myVIEW bigger 
WHERE bigger.percent > myv.percent) AS counter 
FROM myVIEW myv 

Answer 2

使用下面的select查詢創建視圖

SELECT lastID,lastPR,counter 
FROM (SELECT A.id AS lastID,A.percent AS lastPR,count(B.id) AS counter 
FROM myVIEW A,myVIEW B WHERE B.percent<A.percent 
GROUP BY A.id,A.percent)