Question

我在想这可能是连接的问题？我试过Group by无济于事...... 任何建议都会被贬低！我已将查询放在下面：

*抱歉缺少详细信息 - Med_Prof_Record_No是唯一的值，我知道代码很乱 - 但这就是我到这里时的内容;-)这也是一个sql 2000的框，所以新的语法赢了工作......我已经清理了连接abit但是不想偏离原始查询太远 -

SELECT DISTINCT
    P.Last_name + ', ' + P.First_name AS Full_name,   
    P.Degree, 
    F.Med_Prof_Record_No, 
    F.Current_status, 
    F.Status_category, 
    F.Department_name, 
    F.Section, 
    F.SPHAffiliatedPhysiciansSurgeons AS Affiliated,
    S.Board_Name, 
    S.Specialty_Name,
    O.Office_name, 
    O.Address_1, 
    O.Address_2, 
    O.City, 
    O.State, 
    O.Zip_Code, 
    O.Phone_number_1, 
    O.Fax_number
FROM 
    Med_Prof P, Med_Prof_Facilities F, Med_Prof_Specialties S, Med_Prof_Offices O
WHERE         
    (F.Med_Prof_Record_No = P.Med_Prof_Record_No) AND 
    (F.Med_Prof_Record_No = S.Med_Prof_Record_No) AND
    (F.Med_Prof_Record_No = O.Med_Prof_Record_No) AND        
    <cfif URL.LastName is NOT "">(P.Last_name LIKE '#URL.LastName#%') AND</cfif>
    <cfif URL.Specialty is NOT "">(F.Section = '#URL.Specialty#') AND</cfif>
    <cfif URL.Group is NOT "">(O.Office_name LIKE '#URL.Group#%') AND</cfif>                
    (F.Status_category = 'active')
ORDER by Full_name

Answer 1

这是一个刺。这假设你想要决定要显示哪个办公室等（在这种情况下它是任意的），P.Med_Prof_Record_No是唯一的，只代表一个人（起初我认为Last_name + First_name是唯一的，但这似乎是一个非常危险的假设），而且您使用的是SQL Server 2005或更高版本。最后，please use properly qualified object names和please, please, please stop using lazy implicit joins of the FROM foo, bar, blat, splunge variety。

;WITH x AS
(
  SELECT 
    P.Last_name + ', ' + P.First_name AS Full_name,   
    P.Degree, 
    F.Med_Prof_Record_No, 
    -- other columns from F,
    S.Board_Name, 
    S.Specialty_Name,
    O.Office_name,
    -- other columns from O,
    rn = ROW_NUMBER() OVER (PARTITION BY P.Med_Prof_Record_No
      ORDER BY F.Current_status, S.Board_name, O.Office_name)
  FROM 
    dbo.Med_Prof AS P
  INNER JOIN 
    dbo.Med_Prof_Facilities AS F
    ON P.Med_Prof_Record_No = F.Med_Prof_Record_No
  INNER JOIN
    dbo.Med_Prof_Specialties AS S
    ON F.Med_Prof_Record_No = S.Med_Prof_Record_No
  INNER JOIN
    dbo.Med_Prof_Offices AS O
    ON F.Med_Prof_Record_No = O.Med_Prof_Record_No
  WHERE         
    <cfif ... AND</cfif>
    -- other <cfif> clauses
    (F.Status_category = 'active')
)
SELECT * FROM x WHERE rn = 1
ORDER BY Full_name;

使用SQL Query继续获取重复结果

1 个答案: