括号中的括号放置

Question

我已经阅读了本网站Are brackets in the WHERE clause standard sql上的一些资源和帖子。但是，我仍然无法让所有过滤器工作。

运行以下代码时，我的结果仍会返回包含我尝试过滤掉的值以外的值的记录。

我试图返回所有具有（1）PT_ACUITY等于3 - Two+ Resources并且还有（2）Track_Group equaling 'ED Tracking Group'and（3）的CHECKIN_DATE_TIME属于状态和结束日期变量的值以及（4）谁也没有REASON_FOR_VISIT包含任何通配符。

我希望返回的记录能够满足所有四个参数。谢谢！

use EMTCQIData

DECLARE @StartDate Date
DECLARE @EndDate Date

Set @StartDate = '01/01/2017'
Set @EndDate = '12/21/2018'

Select pt_fin, TRACKING_GROUP, PT_MRN, RESULT_DT_TM, NOTE_TYPE, 
RESULT_TITLE_TEXT, AUTHOR, ACTION_PRSNL, Result

from ED_NOTES_MASTER    

WHERE   (TRACK_GROUP    =   'ED Tracking Group')
AND     (PT_ACUITY      =   '3 - Two+ Resources')
AND     (CHECKIN_DATE_TIME > @StartDate and CHECKIN_DATE_TIME < @EndDate)
AND     (REASON_FOR_VISIT Not Like '%asthma%')
Or      (REASON_FOR_VISIT Not Like '%psych%')
Or      (REASON_FOR_VISIT Not Like '%suicide%')
Or      (REASON_FOR_VISIT Not Like '%suicidal%')
Or      (REASON_FOR_VISIT Not Like '%homicide%')
Or      (REASON_FOR_VISIT Not Like '%homicidal%')
Or      (REASON_FOR_VISIT Not Like '%FD-12%')
Or      (REASON_FOR_VISIT Not Like '%behavioral%')
OR      (REASON_FOR_VISIT Not Like '%overdose%')
Or      (REASON_FOR_VISIT Not Like '%aggression%') 

Answer 1

如果你想要一个变量@x不等于1或2，那么你可以写

@X <> 1 AND @X <> 2

但如果你写了

@X <> 1或@X <> 2

那么对于任何数字都是如此，所以如果@X为1，则下半部分为真，使整个事情成真

WHERE TRACK_GROUP = 'ED Tracking Group' AND  PT_ACUITY='3 - Two+ Resources' AND CHECKIN_DATE_TIME > @StartDate and CHECKIN_DATE_TIME < @EndDate 
    AND 
        (REASON_FOR_VISIT Not Like '%asthma%'   --it needs to be NOT like any of these, so all the conditions have to be true
     AND REASON_FOR_VISIT Not Like '%psych%')   --that is to say, each of the conditions is NOT like the value in quotes
     AND REASON_FOR_VISIT Not Like '%suicide%' 
     AND REASON_FOR_VISIT Not Like '%suicidal%'
     AND REASON_FOR_VISIT Not Like '%homicide%'
     AND REASON_FOR_VISIT Not Like '%homicidal%'
     AND REASON_FOR_VISIT Not Like '%FD-12%'
     AND REASON_FOR_VISIT Not Like '%behavioral%'
     AND REASON_FOR_VISIT Not Like '%overdose%'
     AND REASON_FOR_VISIT Not Like '%aggression%' )

Answer 2

首先，格式化查询将使您更容易阅读和剖析。

如果我理解你的问题。

WHERE  TRACK_GROUP = 'ED Tracking Group'
  AND  PT_ACUITY='3 - Two+ Resources'
  AND  CHECKIN_DATE_TIME > @StartDate 
  AND  CHECKIN_DATE_TIME < @EndDate
  AND  (    REASON_FOR_VISIT Not Like '%asthma%' 
        AND REASON_FOR_VISIT Not Like '%psych%' 
        AND REASON_FOR_VISIT Not Like '%suicide%' 
        AND REASON_FOR_VISIT Not Like '%suicidal%' 
        AND REASON_FOR_VISIT Not Like '%homicide%' 
        AND REASON_FOR_VISIT Not Like '%homicidal%' 
        AND REASON_FOR_VISIT Not Like '%FD-12%' 
        AND REASON_FOR_VISIT Not Like '%behavioral%' 
        AND REASON_FOR_VISIT Not Like '%overdose%' 
        AND REASON_FOR_VISIT Not Like '%aggression%' 
       )

Answer 3

好吧，基于你的WHERE子句，你可能不需要任何括号，但我将它们组合在一起如下：

WHERE 
(TRACK_GROUP = 'ED Tracking Group' AND  PT_ACUITY='3 - Two+ Resources' 
AND CHECKIN_DATE_TIME > @StartDate and CHECKIN_DATE_TIME < @EndDate)
 AND (REASON_FOR_VISIT Not Like '%asthma%'
 AND REASON_FOR_VISIT Not Like '%psych%' 
 AND REASON_FOR_VISIT Not Like '%suicide%' 
 AND REASON_FOR_VISIT Not Like '%suicidal%' 
 AND REASON_FOR_VISIT Not Like '%homicide%' 
 AND REASON_FOR_VISIT Not Like '%homicidal%' 
 AND REASON_FOR_VISIT Not Like '%FD-12%' 
 AND REASON_FOR_VISIT Not Like '%behavioral%' 
 AND REASON_FOR_VISIT Not Like '%overdose%' 
 AND REASON_FOR_VISIT Not Like '%aggression%') 

你的问题是那里有所有那些OR