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与 AND 运算符不同的 Easy SQL 语法似乎被忽略

发布于 2024-09-10 10:04:09 字数 8525 浏览 2 评论 0原文

非常感谢您的帮助！我在这里似乎所做的一切都不起作用。我想要做的是删除特定列中具有特定值的行。就像这样：

Where SegStart_Date between getdate()-90 and getdate()-1
    And q.Center not like 'Collections Center'
    And q.Center not like 'Cable Store'
    And q.Center not like 'Business Services Center'
    And q.Center not like 'Escalations'

然而，我所有的尝试都是徒劳的，因为查询无论如何都会返回带有它们的行。我在这里做错了什么？

整个查询如下：

Select segstart,
CASE
--when hour is = 0 and min < 30 then 0
WHEN DATEPART(HOUR, segstart) = 0 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('0' as int)
--when hour is = 0 and min > 30 then 30
WHEN DATEPART(HOUR, segstart) = 0 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('30' as int)
--when hour is 1 and min < 30 then 100
WHEN DATEPART(HOUR, segstart) = 1 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('100' as int)
--when hour is 1 and min > 30 then 130
WHEN DATEPART(HOUR, segstart) = 1 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('130' as int)
--when hour is 2 and min < 30 then 200
WHEN DATEPART(HOUR, segstart) = 2 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('200' as int)
--when hour is 2 and min > 30 then 230
WHEN DATEPART(HOUR, segstart) = 2 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('230' as int)
--when hour is 3 and min < 30 then 300
WHEN DATEPART(HOUR, segstart) = 3 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('300' as int)
--when hour is 3 and min > 30 then 330
WHEN DATEPART(HOUR, segstart) = 3 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('330' as int)
--when hour is 4 and min < 30 then 400
WHEN DATEPART(HOUR, segstart) = 4 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('400' as int)
--when hour is 4 and min > 30 then 430
WHEN DATEPART(HOUR, segstart) = 4 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('430' as int)
--when hour is 5 and min < 30 then 500
WHEN DATEPART(HOUR, segstart) = 5 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('500' as int)
--when hour is 5 and min > 30 then 530
WHEN DATEPART(HOUR, segstart) = 5 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('530' as int)
--when hour is 6 and min < 30 then 600
WHEN DATEPART(HOUR, segstart) = 6 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('600' as int)
--when hour is 6 and min > 30 then 630
WHEN DATEPART(HOUR, segstart) = 6 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('630' as int)
--when hour is 7 and min < 30 then 700
WHEN DATEPART(HOUR, segstart) = 7 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('700' as int)
--when hour is 7 and min > 30 then 730
WHEN DATEPART(HOUR, segstart) = 7 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('730' as int)
--when hour is 8 and min < 30 then 800
WHEN DATEPART(HOUR, segstart) = 8 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('800' as int)
--when hour is 8 and min > 30 then 830
WHEN DATEPART(HOUR, segstart) = 8 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('830' as int)
--when hour is 9 and min < 30 then 900
WHEN DATEPART(HOUR, segstart) = 9 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('900' as int)
--when hour is 9 and min > 30 then 930
WHEN DATEPART(HOUR, segstart) = 9 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('930' as int)
--when hour is 10 and min < 30 then 1000
WHEN DATEPART(HOUR, segstart) = 10 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('1000' as int)
--when hour is 10 and min > 30 then 1030
WHEN DATEPART(HOUR, segstart) = 10 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('1030' as int)
--when hour is 11 and min < 30 then 1100
WHEN DATEPART(HOUR, segstart) = 11 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('1100' as int)
--when hour is 11 and min > 30 then 1130
WHEN DATEPART(HOUR, segstart) = 11 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('1130' as int)
--when hour is 12 and min < 30 then 1200
WHEN DATEPART(HOUR, segstart) = 12 AND DATEPART(MINUTE, segstart) < 30  THEN CAST('1200' as int)
--when hour is 12 and min < 30 then 1230
WHEN DATEPART(HOUR, segstart) = 12 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('1230' as int)
--when hour is 13 and min < 30 then 1300
WHEN DATEPART(HOUR, segstart) = 13 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('1300' as int)
--when hour is 13 and min > 30 then 1330
WHEN DATEPART(HOUR, segstart) = 13 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('1330' as int)
--when hour is 14 and min < 30 then 1400
WHEN DATEPART(HOUR, segstart) = 14 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('1400' as int)
--when hour is 14 and min > 30 then 1430
WHEN DATEPART(HOUR, segstart) = 14 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('1430' as int)
--when hour is 15 and min < 30 then 1500
WHEN DATEPART(HOUR, segstart) = 15 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('1500' as int)
--when hour is 15 and min > 30 then 1530
WHEN DATEPART(HOUR, segstart) = 15 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('1530' as int)
--when hour is 16 and min < 30 then 1600
WHEN DATEPART(HOUR, segstart) = 16 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('1600' as int)
--when hour is 16 and min > 30 then 1630
WHEN DATEPART(HOUR, segstart) = 16 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('1630' as int)
--when hour is 17 and min < 30 then 1700
WHEN DATEPART(HOUR, segstart) = 17 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('1700' as int)
--when hour is 17 and min > 30 then 1730
WHEN DATEPART(HOUR, segstart) = 17 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('1730' as int)
--when hour is 18 and min < 30 then 1800
WHEN DATEPART(HOUR, segstart) = 18 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('1800' as int)
--when hour is 18 and min > 30 then 1830
WHEN DATEPART(HOUR, segstart) = 18 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('1830' as int)
--when hour is 19 and min < 30 then 1900
WHEN DATEPART(HOUR, segstart) = 19 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('1900' as int)
--when hour is 19 and min > 30 then 1930
WHEN DATEPART(HOUR, segstart) = 19 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('1930' as int)
--when hour is 20 and min < 30 then 2000
WHEN DATEPART(HOUR, segstart) = 20 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('2000' as int)
--when hour is 20 and min > 30 then 2030
WHEN DATEPART(HOUR, segstart) = 20 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('2030' as int)
--when hour is 21 and min < 30 then 2100
WHEN DATEPART(HOUR, segstart) = 21 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('2100' as int)
--when hour is 21 and min > 30 then 2130
WHEN DATEPART(HOUR, segstart) = 21 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('2130' as int)
--when hour is 22 and min < 30 then 2200
WHEN DATEPART(HOUR, segstart) = 22 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('2200' as int)
--when hour is 22 and min > 30 then 2230
WHEN DATEPART(HOUR, segstart) = 22 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('2230' as int)
--when hour is 23 and min < 30 then 2300
WHEN DATEPART(HOUR, segstart) = 23 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('2300' as int)
--when hour is 23 and min > 30 then 2330
WHEN DATEPART(HOUR, segstart) = 23 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('2330' as int)
ELSE Null End as Interval,
    FiscalMonthYear,
    SegStart_Date,
    dialed_num,
    callid,
    Name,
    t.Queue AS 'Xferto',
    TransferType,
    RepLName+', '+RepFName AS Agent,
    SupLName+', '+SupFName AS Sup,
    MgrLName+', '+MgrFName AS Manager,
    q.Center,
    q.Queue AS 'Xferfrom',
    e.anslogin,
    e.origlogin,
    t.Extension,
    transferred,
    disposition,
    talktime,
    dispsplit
From CMS_ECH.dbo.CaliforniaECH e

INNER JOIN Cal_RemReporting.dbo.TransferVDNs t on e.dialed_num = t.Extension
INNER JOIN InfoQuest.dbo.IQ_Employee_Profiles_v3_AvayaId q on e.origlogin = q.AvayaID
INNER JOIN Cal_RemReporting.dbo.udFiscalMonthTable f on e.SegStart_Date = f.Tdate

Where SegStart_Date between getdate()-90 and getdate()-1
    And q.Center not like 'Collections Center'
    And q.Center not like 'Cable Store'
    And q.Center not like 'Business Services Center'
    And q.Center not like 'Escalations'
    And SegStart_Date between RepToSup_StartDate and RepToSup_EndDate
    And SegStart_Date between SupToMgr_StartDate and SupToMgr_EndDate
    And SegStart_Date between Avaya_StartDate and Avaya_EndDate
    And SegStart_Date between RepQueue_StartDate and RepQueue_EndDate
    AND e.transferred like '1'
    OR e.disposition like '4' order by center
原文

Thank you so much for helping! Nothing I seem to do works here. What I want to do is remove rows with a certain value in a certain column. Like so:

Where SegStart_Date between getdate()-90 and getdate()-1
    And q.Center not like 'Collections Center'
    And q.Center not like 'Cable Store'
    And q.Center not like 'Business Services Center'
    And q.Center not like 'Escalations'

Yet all my attempts to NOT are futile as the query returns rows with them anyway. What did I do wrong here?

The whole query is provided below:

Select segstart,
CASE
--when hour is = 0 and min < 30 then 0
WHEN DATEPART(HOUR, segstart) = 0 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('0' as int)
--when hour is = 0 and min > 30 then 30
WHEN DATEPART(HOUR, segstart) = 0 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('30' as int)
--when hour is 1 and min < 30 then 100
WHEN DATEPART(HOUR, segstart) = 1 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('100' as int)
--when hour is 1 and min > 30 then 130
WHEN DATEPART(HOUR, segstart) = 1 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('130' as int)
--when hour is 2 and min < 30 then 200
WHEN DATEPART(HOUR, segstart) = 2 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('200' as int)
--when hour is 2 and min > 30 then 230
WHEN DATEPART(HOUR, segstart) = 2 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('230' as int)
--when hour is 3 and min < 30 then 300
WHEN DATEPART(HOUR, segstart) = 3 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('300' as int)
--when hour is 3 and min > 30 then 330
WHEN DATEPART(HOUR, segstart) = 3 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('330' as int)
--when hour is 4 and min < 30 then 400
WHEN DATEPART(HOUR, segstart) = 4 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('400' as int)
--when hour is 4 and min > 30 then 430
WHEN DATEPART(HOUR, segstart) = 4 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('430' as int)
--when hour is 5 and min < 30 then 500
WHEN DATEPART(HOUR, segstart) = 5 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('500' as int)
--when hour is 5 and min > 30 then 530
WHEN DATEPART(HOUR, segstart) = 5 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('530' as int)
--when hour is 6 and min < 30 then 600
WHEN DATEPART(HOUR, segstart) = 6 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('600' as int)
--when hour is 6 and min > 30 then 630
WHEN DATEPART(HOUR, segstart) = 6 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('630' as int)
--when hour is 7 and min < 30 then 700
WHEN DATEPART(HOUR, segstart) = 7 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('700' as int)
--when hour is 7 and min > 30 then 730
WHEN DATEPART(HOUR, segstart) = 7 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('730' as int)
--when hour is 8 and min < 30 then 800
WHEN DATEPART(HOUR, segstart) = 8 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('800' as int)
--when hour is 8 and min > 30 then 830
WHEN DATEPART(HOUR, segstart) = 8 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('830' as int)
--when hour is 9 and min < 30 then 900
WHEN DATEPART(HOUR, segstart) = 9 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('900' as int)
--when hour is 9 and min > 30 then 930
WHEN DATEPART(HOUR, segstart) = 9 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('930' as int)
--when hour is 10 and min < 30 then 1000
WHEN DATEPART(HOUR, segstart) = 10 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('1000' as int)
--when hour is 10 and min > 30 then 1030
WHEN DATEPART(HOUR, segstart) = 10 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('1030' as int)
--when hour is 11 and min < 30 then 1100
WHEN DATEPART(HOUR, segstart) = 11 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('1100' as int)
--when hour is 11 and min > 30 then 1130
WHEN DATEPART(HOUR, segstart) = 11 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('1130' as int)
--when hour is 12 and min < 30 then 1200
WHEN DATEPART(HOUR, segstart) = 12 AND DATEPART(MINUTE, segstart) < 30  THEN CAST('1200' as int)
--when hour is 12 and min < 30 then 1230
WHEN DATEPART(HOUR, segstart) = 12 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('1230' as int)
--when hour is 13 and min < 30 then 1300
WHEN DATEPART(HOUR, segstart) = 13 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('1300' as int)
--when hour is 13 and min > 30 then 1330
WHEN DATEPART(HOUR, segstart) = 13 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('1330' as int)
--when hour is 14 and min < 30 then 1400
WHEN DATEPART(HOUR, segstart) = 14 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('1400' as int)
--when hour is 14 and min > 30 then 1430
WHEN DATEPART(HOUR, segstart) = 14 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('1430' as int)
--when hour is 15 and min < 30 then 1500
WHEN DATEPART(HOUR, segstart) = 15 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('1500' as int)
--when hour is 15 and min > 30 then 1530
WHEN DATEPART(HOUR, segstart) = 15 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('1530' as int)
--when hour is 16 and min < 30 then 1600
WHEN DATEPART(HOUR, segstart) = 16 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('1600' as int)
--when hour is 16 and min > 30 then 1630
WHEN DATEPART(HOUR, segstart) = 16 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('1630' as int)
--when hour is 17 and min < 30 then 1700
WHEN DATEPART(HOUR, segstart) = 17 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('1700' as int)
--when hour is 17 and min > 30 then 1730
WHEN DATEPART(HOUR, segstart) = 17 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('1730' as int)
--when hour is 18 and min < 30 then 1800
WHEN DATEPART(HOUR, segstart) = 18 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('1800' as int)
--when hour is 18 and min > 30 then 1830
WHEN DATEPART(HOUR, segstart) = 18 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('1830' as int)
--when hour is 19 and min < 30 then 1900
WHEN DATEPART(HOUR, segstart) = 19 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('1900' as int)
--when hour is 19 and min > 30 then 1930
WHEN DATEPART(HOUR, segstart) = 19 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('1930' as int)
--when hour is 20 and min < 30 then 2000
WHEN DATEPART(HOUR, segstart) = 20 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('2000' as int)
--when hour is 20 and min > 30 then 2030
WHEN DATEPART(HOUR, segstart) = 20 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('2030' as int)
--when hour is 21 and min < 30 then 2100
WHEN DATEPART(HOUR, segstart) = 21 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('2100' as int)
--when hour is 21 and min > 30 then 2130
WHEN DATEPART(HOUR, segstart) = 21 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('2130' as int)
--when hour is 22 and min < 30 then 2200
WHEN DATEPART(HOUR, segstart) = 22 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('2200' as int)
--when hour is 22 and min > 30 then 2230
WHEN DATEPART(HOUR, segstart) = 22 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('2230' as int)
--when hour is 23 and min < 30 then 2300
WHEN DATEPART(HOUR, segstart) = 23 AND DATEPART(MINUTE, segstart) < 30 THEN CAST('2300' as int)
--when hour is 23 and min > 30 then 2330
WHEN DATEPART(HOUR, segstart) = 23 AND DATEPART(MINUTE, segstart) >= 30 THEN CAST('2330' as int)
ELSE Null End as Interval,
    FiscalMonthYear,
    SegStart_Date,
    dialed_num,
    callid,
    Name,
    t.Queue AS 'Xferto',
    TransferType,
    RepLName+', '+RepFName AS Agent,
    SupLName+', '+SupFName AS Sup,
    MgrLName+', '+MgrFName AS Manager,
    q.Center,
    q.Queue AS 'Xferfrom',
    e.anslogin,
    e.origlogin,
    t.Extension,
    transferred,
    disposition,
    talktime,
    dispsplit
From CMS_ECH.dbo.CaliforniaECH e

INNER JOIN Cal_RemReporting.dbo.TransferVDNs t on e.dialed_num = t.Extension
INNER JOIN InfoQuest.dbo.IQ_Employee_Profiles_v3_AvayaId q on e.origlogin = q.AvayaID
INNER JOIN Cal_RemReporting.dbo.udFiscalMonthTable f on e.SegStart_Date = f.Tdate

Where SegStart_Date between getdate()-90 and getdate()-1
    And q.Center not like 'Collections Center'
    And q.Center not like 'Cable Store'
    And q.Center not like 'Business Services Center'
    And q.Center not like 'Escalations'
    And SegStart_Date between RepToSup_StartDate and RepToSup_EndDate
    And SegStart_Date between SupToMgr_StartDate and SupToMgr_EndDate
    And SegStart_Date between Avaya_StartDate and Avaya_EndDate
    And SegStart_Date between RepQueue_StartDate and RepQueue_EndDate
    AND e.transferred like '1'
    OR e.disposition like '4' order by center

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评论（4）

妳是的陽光 2024-09-17 10:04:09

底部有一个 OR ，我认为它会吸收某些行，即使它们具有排除的值。不带括号的效果是(A AND B AND C ... AND Z) OR W。也许您需要以不同的方式对谓词进行分组。

当我们这样做时，您不需要在这里使用LIKE，因为您正在寻找完全匹配的内容。这样做：

Where SegStart_Date between getdate()-90 and getdate()-1
    And q.Center not in ('Collections Center',
                         'Cable Store',
                         'Business Services Center',
                         'Escalations')

对于底部的东西也是如此。

There is an OR right at the bottom, which I presume will suck in some rows even if they have the excluded values. The effect, without parentheses, is (A AND B AND C ... AND Z) OR W. Perhaps you need to group your predicates differently.

While we're at it, you don't need LIKE here, since you are looking for exact matches. Do this instead:

Where SegStart_Date between getdate()-90 and getdate()-1
    And q.Center not in ('Collections Center',
                         'Cable Store',
                         'Business Services Center',
                         'Escalations')

The same goes for the stuff towards the bottom.

回复 原文
饮惑 2024-09-17 10:04:09

您对 AND 和 OR 之间的优先级感到困惑。

OR 的优先级低于 AND，这使得您的查询返回任何 e.disposition like '4' 的行，

我在对 几周前需要有关正确 SQL 的帮助。

You are confused about the precedence between AND and OR.

OR has lower precedence than AND, which makes your query return any row where e.disposition like '4'

I wrote a lengthy explanation for an equivalent problem in my answer to Need help with correct SQL a couple of weeks ago.

回复 原文
过期以后 2024-09-17 10:04:09

你有一个包围问题：

   AND e.transferred like '1'
    OR e.disposition like '4'

应该是

   AND (e.transferred like '1'
    OR e.disposition like '4')

or

   (... 
   AND e.transferred like '1')
    OR e.disposition like '4'

吗？

You have a bracketing problem:

   AND e.transferred like '1'
    OR e.disposition like '4'

Is that supposed to be

   AND (e.transferred like '1'
    OR e.disposition like '4')

or

   (... 
   AND e.transferred like '1')
    OR e.disposition like '4'

?

回复 原文
银河中√捞星星 2024-09-17 10:04:09

正如其他人指出的，SQL 中布尔运算符的优先级如下。

  • 不是
  • And
  • Or

解释了您所看到的问题。

我在您发布的代码中注意到的另一件事是，它包含类似这样的行

WHEN DATEPART(HOUR, segstart) = 0 
      AND DATEPART(MINUTE, segstart) < 30 THEN CAST('0' as int)

This can/should be write without thecast from string to int as

WHEN DATEPART(HOUR, segstart) = 0 AND DATEPART(MINUTE, segstart) < 30 THEN 0

但事实上，我认为您可以摆脱整个巨大的 case 表达式并将其替换为

100*DATEPART(HOUR, segstart) +30*(DATEPART(MINUTE, segstart)/30)  as Interval

As others have pointed out the precedence for boolean operators in SQL is the following order.

  • Not
  • And
  • Or

which explains the problem you were seeing.

Another thing I noticed in the code you posted is that it contains lines like

WHEN DATEPART(HOUR, segstart) = 0 
      AND DATEPART(MINUTE, segstart) < 30 THEN CAST('0' as int)

This could/should be written without the cast from string to int as

WHEN DATEPART(HOUR, segstart) = 0 AND DATEPART(MINUTE, segstart) < 30 THEN 0

But in fact I think you could get rid of that whole huge case expression and replace it with

100*DATEPART(HOUR, segstart) +30*(DATEPART(MINUTE, segstart)/30)  as Interval
回复 原文
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