在SQL查詢中缺少運算符

-1

我想從MS Access查詢棒球數據庫，但是我的SQL語句一直卡在缺少的運算符上。下面是我通過SQL查詢：在SQL查詢中缺少運算符

SELECT 
    Master.nameFirst, Master.nameLast, 
    Master.nameFirst + ' ' + Master.nameLast as FULLNAME, 
    (SUM(Batting.H) + SUM(Batting.BB) + SUM(Batting.HBP))/(SUM(Batting.AB) + SUM(Batting.BB) + SUM(Batting.HBP)) as OBP, 
    SUM(Batting.H)/(SUM(Batting.H) + SUM(Batting.BB) + SUM(Batting.HBP)) as HitP, 
    (SUM(Batting.2B) + SUM(Batting.3B) + SUM(Batting.HR))/SUM(Batting.H) as ExtraP, 
    SUM(Batting.HR)/(SUM(Batting.2B) + SUM(Batting.3B) + SUM(Batting.HR)) as HRP, 
    SUM(Batting.3B)/(SUM(Batting.2B) + SUM(Batting.3B)) as TriplePerc, 
    SUM(Batting.HBP)/(SUM(Batting.BB) + SUM(Batting.HBP)) as HBPP 
FROM 
    Master 
INNER JOIN 
    Batting ON Master.playerID = Batting.playerID 
WHERE 
    (Batting.playerID IN (SELECT playerID 
          FROM Master 
          WHERE (nameFirst = 'Ryan' AND nameLast = 'Howard'))

丟失的操作錯誤似乎把重點放在這個單一的表達：

(SUM(Batting.2B) + SUM(Batting.3B) + SUM(Batting.HR))/SUM(Batting.H) as ExtraP

但老實說，我看不出有什麼不妥的地方。我錯過了什麼？

來源

2016-12-04 jDave1984

爲什麼不通過在條件解決之前刪除條件來簡化查詢？如果你仍然不解決問題，那就問一個問題。 –

真的是你的專欄名稱嗎？這應該是問題。你正在使用哪個DBMS？ –

請添加 - （1）數據庫+版本的相關標籤（2）相關表格的DDL（想想支持您的容易程度） –

而且，只是爲了讓一個建議，如果你使用的別名，並格式化你的SQL，你會發現你的代碼更容易閱讀，理解和調試：

SELECT m.nameFirst, m.nameLast, 
    m.nameFirst + ' ' + m.nameLast FULLNAME, 
    (SUM(b.H) + SUM(b.BB) + SUM(b.HBP))/
    (SUM(b.AB) + SUM(b.BB) + SUM(b.HBP)) OBP, 
    SUM(b.H)/(SUM(b.H) + SUM(b.BB) + SUM(b.HBP)) HitP, 
    (SUM(b.2B) + SUM(b.3B) + SUM(b.HR))/SUM(b.H) ExtraP, 
    SUM(b.HR)/(SUM(b.2B) + SUM(b.3B) + SUM(b.HR)) HRP, 
    SUM(b.3B)/(SUM(b.2B) + SUM(b.3B)) TriplePerc, 
    SUM(b.HBP)/(SUM(b.BB) + SUM(b.HBP)) HBPP 
FROM Master m JOIN Batting b 
    ON b.playerID = m.playerID 
    and b.playerId IN 
     (SELECT playerID FROM Master 
     WHERE(nameFirst = 'Ryan' 
      AND nameLast = 'Howard')

來源

2016-12-04 15:38:21

它是C＃字符串的一部分。對窮人格式化抱歉！ – jDave1984

我認爲你錯過了所有'AS xxx'的計算？看看'SUM（b.3B））TriplePerc，' –

這些「as」在SQL中是可選的。 –

這是四線，如：

SUM(Batting.H)/(SUM(Batting.H) + SUM(Batting.BB) + SUM(Batting.HBP)) as HitP,

應該是：

SUM(Batting.H)/((SUM(Batting.H) + SUM(Batting.BB) + SUM(Batting.HBP)) as HitP,

或：

SUM(Batting.H)/(SUM(Batting.H) + SUM(Batting.BB) + SUM(Batting.HBP) as HitP,

編輯

噢，我的，那些都錯了。這是丟失的右括號 - 或者說省略掉第一個左括號：

WHERE 
    (Batting.playerID IN (SELECT playerID 
          FROM Master 
          WHERE (nameFirst = 'Ryan' AND nameLast = 'Howard'))

來源

2016-12-04 16:18:25 Gustav

也許我已經爲足球做好準備了，但是你確定'應該'的語法嗎？（）對現在看起來不平衡？ –

嗯，我不知道計算的目的是什麼，所以第一個_將H與（H + BB + HBP）分開，而第二個_與H分開H，然後加上BB + HBP_。但最後一個沒有什麼意義，我現在看到了。所以「應該」似乎對我來說是正確的。 – Gustav

我做老'保持parens計數，爲每個'加'1（'和減去1'）。希望以零結束。我得到一個額外的'（'與'你應該'和'或'：'我錯過了什麼？:) –

在SQL查詢中缺少運算符

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