Question

我有一个SQL语句可以做一些数学运算。它计算基点，奖励积分和总积分（基数+奖金=总数）。

大部分时间（99％）的计算都符合预期。但有时返回的总数不是基数+奖金。我无法弄清楚为什么会这样。

这是相关的SQL

   SUM(CASE
        WHEN validated = 1 AND invalidated = 0
        THEN ptsBase
        ELSE 0
        END) AS awardedPoints,
    SUM(CASE
        WHEN validated = 1 AND invalidated = 0
        THEN ptsBonus
        ELSE 0
        END) AS awardedBonus,
    SUM(CASE
        WHEN validated = 1 AND invalidated = 0
        THEN ptsBase + ptsBonus
        ELSE 0
        END) AS awardedTotal,

注意：awardPoints和grantedBonus的计算总是准确的。据我所知，awardTotal计算是唯一一个关闭的计算。

在我正在看的情况下

awardPoints = 1345
awardBonus = 46
awardTotal = 1377（预计为1391，减少14分）

Answer 1

谢谢Martin Smith，McNets和CBroe。你们都钉了它。我正准备发布奖励积分栏有时候是空的。将代码更改为以下工作...

    SUM(CASE
        WHEN validated = 1 AND invalidated = 0
        THEN ptsBase
        ELSE 0
        END) AS awardedPoints,
    SUM(CASE
        WHEN validated = 1 AND invalidated = 0
        THEN ptsBonus
        ELSE 0
        END) AS awardedBonus,
    SUM(CASE
        WHEN validated = 1 AND invalidated = 0
        THEN ptsBase + COALESCE(ptsBonus, 0)
        ELSE 0
        END) AS awardedTotal,

CASE语句数学并不总是有意义的

1 个答案: