sql - Joining three tables with separate sets of identifying columns

Question

I have three tables that share one field with another table, so:

Employee_Data: EMP_ID, PHONE_EXTENSION
Outage_Data: DATE, EMP_ID
Phone_Data: DATE, PHONE_EXTENSION

I need to combine data where the agent data is matched with data in the other two tables. Basically, I need to combine the data from Outage_data and Phone_data (because it is all grouped by date) with Employee_Data as the "bridge".

I already have my SELECT and everything laid out like it needs to be; I just need help with the join.

EDIT By Request, here is the full query. I tried not to do this for simplicity's sake:

    With Epi AS
 (SELECT  EMP_ID, PHONE_EXTENSION, Name, Manager, EWFMDeptname, Location From Employee_Data)
,

Shrink AS
 (SELECT DATE, EMP_ID, START_MOMENT, STOP_MOMENT, SEG_CODE FROM Outage_Data)
,

OutIn AS
 (SELECT date, logid, login, logout From PHONE_DATA)

 SELECT
    ISNULL(Shrink.DATE,OutIn.DATE) AS RowDate,
    ISNULL(Epi.EMP_ID,RTRIM(LTRIM(Shrink.EMP_ID))) AS Badge,
    ISNULL(Epi.PHONE_EXTENSION, OutIn.logid) AS [ACD/Extension],
    Epi.Name,
    Epi.Manager,
    Epi.EWFMDeptName,
    Epi.Location,
    ISNULL(Shrink.START_MOMENT, (SELECT Shrink.START_MOMENT FROM Shrink WHERE SHRINK.SEG_CODE = 'SHIFT' AND Shrink.EMP_ID = EPI.EMP_ID AND SHRINK.DATE = OutIn.DATE)) AS ShiftStart,
    ISNULL(Shrink.STOP_MOMENT, (SELECT Shrink.STOP_MOMENT FROM Shrink WHERE SHRINK.SEG_CODE = 'SHIFT' AND Shrink.EMP_ID = EPI.EMP_ID AND SHRINK.DATE = OutIn.row_date)) AS ShiftStop,
    OutIn.login AS Login,
    OutIn.logout AS Logout,
    Shrink.SEG_CODE AS OUTSEG,
    IIF(Shrink.SEG_CODE = 'PABS' OR Shrink.SEG_CODE = 'UABS' OR Shrink.SEG_CODE = 'PPBA' OR Shrink.SEG_CODE = 'UPBA' OR Shrink.SEG_CODE = 'VACA' OR Shrink.SEG_CODE = 'JURY' OR Shrink.SEG_CODE = 'GOVT' OR Shrink.SEG_CODE = 'LOA' OR Shrink.SEG_CODE = 'BRVMNT' OR Shrink.SEG_CODE = 'FH', Shrink.START_MOMENT, NUll) AS OutStart,
    IIF(Shrink.SEG_CODE = 'PABS' OR Shrink.SEG_CODE = 'UABS' OR Shrink.SEG_CODE = 'PPBA' OR Shrink.SEG_CODE = 'UPBA' OR Shrink.SEG_CODE = 'VACA' OR Shrink.SEG_CODE = 'JURY' OR Shrink.SEG_CODE = 'GOVT' OR Shrink.SEG_CODE = 'LOA' OR Shrink.SEG_CODE = 'BRVMNT' OR Shrink.SEG_CODE = 'FH', Shrink.STOP_MOMENT, NUll) AS OutStop,
    IIF(DateADD(minute, 5, Shrink.START_MOMENT) < OutIn.Login, CONVERT(decimal(10,2), DATEDIFF(second ,Shrink.START_MOMENT,OutIn.Login)/60.0) ,0.00) AS Late,
    ISNULL(IIF(Convert(decimal(10,2), DATEDIFF(second, Shrink.STOP_MOMENT, OutIn.logout)/60.0) = NULL OR Convert(decimal(10,2), DATEDIFF(second, Shrink.STOP_MOMENT, OutIn.logout)/60.0) > 0.00, 0.00, ABS(Convert(decimal(10,2), DATEDIFF(second, Shrink.STOP_MOMENT, OutIn.logout)/60.0))), 0.00) AS [Left],
    IIF(OutIn.login IS NULL AND Shrink.SEG_CODE = 'SHIFT' ,DATEDIFF(minute,Shrink.START_MOMENT, Shrink.STOP_MOMENT), 0.00) AS NCNS
 FROM (Epi Right JOIN Shrink on Epi.EMP_ID = Shrink.EMP_ID) INNER JOIN OutIn ON (Shrink.DATE = OutIn.DATE) JOIN (
 WHERE Shrink.SEG_CODE = 'PABS' OR Shrink.SEG_CODE = 'UABS' OR Shrink.SEG_CODE = 'PPBA' OR Shrink.SEG_CODE = 'UPBA' OR Shrink.SEG_CODE = 'VACA' OR Shrink.SEG_CODE = 'JURY' OR Shrink.SEG_CODE = 'GOVT' OR Shrink.SEG_CODE = 'LOA' OR Shrink.SEG_CODE = 'BRVMNT' OR Shrink.SEG_CODE = 'FH' or Shrink.SEG_CODE = 'SHIFT'
 ORDER BY Badge;

Sorry its kind of messy. Again, Thank you

EDIT2

Per request, here is some of my data:

Shrink:

      EMP_SK    EMP_ID  EMP_LAST_NAME   EMP_FIRST_NAME  EMP_SORT_NAME   EMP_SHORT_NAME  EMP_SENIORITY   EMP_EFF_HIRE_DATE   NOM_DATE    SEG_CODE    START_MOMENT    STOP_MOMENT
-9.88181E+11    73485   BLAH    BLAH    BLAH    BLAH    20130812000 8/12/2013 0:00:00   10/6/2013 0:00:00   SHIFT   10/6/2013 12:00:00  10/6/2013 21:00:00
-9.88181E+11    73485   BLAH    BLAH    BLAH    BLAH    20130812000 8/12/2013 0:00:00   10/7/2013 0:00:00   SHIFT   10/7/2013 12:00:00  10/7/2013 21:00:00
-9.88768E+11    192329  BLAH    BLAH    BLAH    BLAH    20130715000 7/15/2013 0:00:00   10/7/2013 0:00:00   SHIFT   10/7/2013 6:00:00   10/7/2013 15:00:00
-9.88741E+11    224579  BLAH    BLAH    BLAH    BLAH    20091214000 12/14/2009 0:00:00  10/7/2013 0:00:00   SHIFT   10/7/2013 8:00:00   10/7/2013 17:00:00
-9.88741E+11    224579  BLAH    BLAH    BLAH    BLAH    20091214000 12/14/2009 0:00:00  10/8/2013 0:00:00   SHIFT   10/8/2013 8:00:00   10/8/2013 17:00:00
-9.88181E+11    73485   BLAH    BLAH    BLAH    BLAH    20130812000 8/12/2013 0:00:00   10/8/2013 0:00:00   SHIFT   10/8/2013 12:00:00  10/8/2013 21:00:00
-9.88768E+11    192329  BLAH    BLAH    BLAH    BLAH    20130715000 7/15/2013 0:00:00   10/8/2013 0:00:00   SHIFT   10/8/2013 6:00:00   10/8/2013 15:00:00

Epi:

     Badge  Name    NT Login    Email   MBadge  Manager Vendor  Business Unit   Business Unit Desc  Sub-Support Name    Segment Location    Subqueue    Phone Queue Title   EWFMDeptCode    EWFMDeptName    EWFMTeamCode    EWFMTeamName    ACD/Extension   Switch Name DomsID  DomsID2 DomsID3 Tech-ID (DPS)   Tech-ID2 (DPS2) KanaUserID  NetAgentID  Part_Time   Alias   Miscellaneous   Hiredate    Cost Center Jack    Building    QueueStatus Training Class  Trainer TeamCodeName    TeamCodeAbbr
    73485   blah    blah    blah    315413  blah    blah    blah    Service Desk Delivery   blah    Tech Support    blah    blah    Client Specialty Queue  Phone Agent blah    blah    Not Assigned    Not Assigned    4341776 AC03    NULL    NULL    NULL    NULL    NULL    NULL    NULL    0   NULL    NULL    00:00.0 blah    blah    blah    Normal  Generic Class   Instructor  Not Assigned    Not Assigned
    224579  blah    blah    blah    626985  blah    blah    blah    Service Desk Delivery   blah    Tech Support    blah    blah    Client Specialty Queue  Phone Agent blah    blah    Not Assigned    Not Assigned    4341991 AC03    NULL    NULL    NULL    211212  NULL    0   0   0   NULL    NULL    00:00.0 blah    blah    blah    Normal  Generic Class   Instructor  Not Assigned    Not Assigned
    192329  blah    blah    blah    364970  blah    blah    blah    Service Desk Delivery   blah    Tech Support    blah    blah    Client Specialty Queue  Phone Agent blah    blah    Not Assigned    Not Assigned    4341937 AC03    NULL    NULL    NULL    NULL    NULL    0   0   0   NULL    NULL    00:00.0 blah    blah    blah    Normal  Generic Class   Instructor  Not Assigned    Not Assigned

OutIn:

row_date            logid   login                   logout
10/6/2013 0:00:00   4341776 10/6/2013 12:00:15  10/6/2013 21:00:26
10/7/2013 0:00:00   4341937 10/7/2013 6:04:48   10/7/2013 15:15:22
10/7/2013 0:00:00   4341991 10/7/2013 7:54:34   10/7/2013 17:00:39
10/7/2013 0:00:00   4341776 10/7/2013 12:00:16  10/7/2013 21:20:36
10/8/2013 0:00:00   4341937 10/8/2013 5:59:47   10/8/2013 15:01:31
10/8/2013 0:00:00   4341991 10/8/2013 7:58:46   10/8/2013 17:03:26
10/8/2013 0:00:00   4341776 10/8/2013 12:00:10  10/8/2013 14:32:20
10/8/2013 0:00:00   4341776 10/8/2013 14:32:20  10/8/2013 21:00:04

Thank you again

Final EDIT

I finally figured it out. Here is the completed code:

SELECT
    a.NOM_DATE AS RowDate, 
    a.EMP_ID AS Badge,
    ISNULL(a.[Extension], a.logid) AS [Extension],
    a.Name,
    a.Manager,
    a.DeptName,
    a.Location,
    a.START_MOMENT AS ShiftStart,
    a.STOP_MOMENT AS ShiftStop,
    a.login AS Login,
    a.logout AS Logout,
    a.SEG_CODE AS OUTSEG,
    IIF(a.SEG_CODE = 'PABS' OR a.SEG_CODE = 'UABS' OR a.SEG_CODE = 'PPBA' OR a.SEG_CODE = 'UPBA' OR a.SEG_CODE = 'VACA' OR a.SEG_CODE = 'JURY' OR a.SEG_CODE = 'GOVT' OR a.SEG_CODE = 'LOA' OR a.SEG_CODE = 'BRVMNT' OR a.SEG_CODE = 'FH', a.START_MOMENT, NUll) AS OutStart,
    IIF(a.SEG_CODE = 'PABS' OR a.SEG_CODE = 'UABS' OR a.SEG_CODE = 'PPBA' OR a.SEG_CODE = 'UPBA' OR a.SEG_CODE = 'VACA' OR a.SEG_CODE = 'JURY' OR a.SEG_CODE = 'GOVT' OR a.SEG_CODE = 'LOA' OR a.SEG_CODE = 'BRVMNT' OR a.SEG_CODE = 'FH', a.STOP_MOMENT, NUll) AS OutStop,
    IIF(DateADD(minute, 5, a.START_MOMENT) < a.Login, CONVERT(decimal(10,2), DATEDIFF(second ,a.START_MOMENT,a.Login)/60.0) ,0.00) AS Late,
    ISNULL(IIF(Convert(decimal(10,2), DATEDIFF(second, a.STOP_MOMENT, a.logout)/60.0) = NULL OR Convert(decimal(10,2), DATEDIFF(second, a.STOP_MOMENT, a.logout)/60.0) > 0.00, 0.00, ABS(Convert(decimal(10,2), DATEDIFF(second, a.STOP_MOMENT, a.logout)/60.0))), 0.00) AS [Left],
    IIF(a.login IS NULL AND a.SEG_CODE = 'SHIFT' ,DATEDIFF(minute,a.START_MOMENT, a.STOP_MOMENT), 0.00) AS NCNS
 FROM (SELECT l.row_date, l.logid, l.[login], l.logout, f.NOM_DATE, f.EMP_ID, f.START_MOMENT, f.STOP_MOMENT, f.SEG_CODE,
f.Badge, f.Extension, f.Name, f.Manager, f.Deptname, f.Location FROM LogInOutActual l
right Join 
(SELECT NOM_DATE, RTRIM(LTRIM(EMP_ID)) as EMP_ID, START_MOMENT, STOP_MOMENT, SEG_CODE, Badge,
Extension, Name, Manager, Deptname, Location FROM Shrink_Raw
LEFT OUTER JOIN Epicenter ON Shrink_Raw.EMP_ID = Epicenter.Badge 
WHERE Shrink_Raw.SEG_CODE = 'PABS' OR Shrink_Raw.SEG_CODE = 'UABS' OR Shrink_Raw.SEG_CODE = 'PPBA'
OR Shrink_Raw.SEG_CODE = 'UPBA' OR Shrink_Raw.SEG_CODE = 'VACA' OR Shrink_Raw.SEG_CODE = 'JURY'
OR Shrink_Raw.SEG_CODE = 'GOVT' OR Shrink_Raw.SEG_CODE = 'LOA' OR Shrink_Raw.SEG_CODE = 'BRVMNT'
OR Shrink_Raw.SEG_CODE = 'FH' or Shrink_Raw.SEG_CODE = 'SHIFT') as f
on l.row_date = f.NOM_DATE AND l.logid = f.[ACD/Extension]) as a
WHERE Extension IS NOT NULL AND Name IS NOT NULL AND Manager IS NOT NULL and DeptName IS NOT NULL  AND Location IS NOT NULL
 ORDER BY RowDate, Badge;

After sleeping on it, I realized what to do. I did one join in a subquery and then another join in another subquery. It was so simple I feel stupid for posting it. Thank you to everyone that help the thinking process!

score 1 · Accepted Answer

Select * from employee_data e
join outage_data d on e.emp_id = d.emp_id
join phone_data p on d.date = p.date

score 1 · Accepted Answer

假设您在 Shrink 上使用 RIGHT JOIN，您的查询看起来大部分都很好，这样您就不会错过任何没有匹配 Employee_Data 行的行。我删除了您的条款JOIN (末尾的一个无关紧要的内容：FROM

    With Epi AS
 (SELECT  EMP_ID, PHONE_EXTENSION, Name, Manager, EWFMDeptname, Location From Employee_Data)
,

Shrink AS
 (SELECT DATE, EMP_ID, START_MOMENT, STOP_MOMENT, SEG_CODE FROM Outage_Data)
,

OutIn AS
 (SELECT date, logid, login, logout From PHONE_DATA)

 SELECT
    -- These fields are always the same because of the inner join, 
    -- no need to check for nulls 
    -- ISNULL(Shrink.DATE,OutIn.DATE) AS RowDate,
    Shrink.DATE AS RowDate, 
    -- These fields are always the same because of the right join 
    -- unless there is no matching Epi row, then Epi.EMP_ID will 
    -- be null. You can just use Shrink.EMP_ID. If this field
    -- really needs to be trimmed, then we should be trimming
    -- this field in the RIGHT JOIN clause as well. 
    -- ISNULL(Epi.EMP_ID,RTRIM(LTRIM(Shrink.EMP_ID))) AS Badge,
    Shrink.EMP_ID AS Badge,
    ISNULL(Epi.PHONE_EXTENSION, OutIn.logid) AS [ACD/Extension],
    Epi.Name,
    Epi.Manager,
    Epi.EWFMDeptName,
    Epi.Location,
    -- I've added an alias to Shrink in the subqueries 
    -- to help clarify what is getting filtered.
    -- I also changed the where clause in the subquery 
    -- a bit so give this a try.
    -- If these are the problem fields, try not doing the 
    -- subqueries so you can get the actual data in the rows, 
    -- and mess around with just the subquery using values 
    -- from the original rows until you get the right START_MOMENT/STOP_MOMENT 
    ISNULL(Shrink.START_MOMENT, (SELECT Shrink.START_MOMENT FROM Shrink s WHERE s.SEG_CODE = 'SHIFT' AND s.EMP_ID = Shrink.EMP_ID AND s.DATE = Shrink.DATE)) AS ShiftStart,
    ISNULL(Shrink.STOP_MOMENT, (SELECT Shrink.STOP_MOMENT FROM Shrink s WHERE s.SEG_CODE = 'SHIFT' AND s.EMP_ID = Shrink.EMP_ID AND s.DATE = Shrink.DATE)) AS ShiftStop,
    OutIn.login AS Login,
    OutIn.logout AS Logout,
    Shrink.SEG_CODE AS OUTSEG,
    IIF(Shrink.SEG_CODE = 'PABS' OR Shrink.SEG_CODE = 'UABS' OR Shrink.SEG_CODE = 'PPBA' OR Shrink.SEG_CODE = 'UPBA' OR Shrink.SEG_CODE = 'VACA' OR Shrink.SEG_CODE = 'JURY' OR Shrink.SEG_CODE = 'GOVT' OR Shrink.SEG_CODE = 'LOA' OR Shrink.SEG_CODE = 'BRVMNT' OR Shrink.SEG_CODE = 'FH', Shrink.START_MOMENT, NUll) AS OutStart,
    IIF(Shrink.SEG_CODE = 'PABS' OR Shrink.SEG_CODE = 'UABS' OR Shrink.SEG_CODE = 'PPBA' OR Shrink.SEG_CODE = 'UPBA' OR Shrink.SEG_CODE = 'VACA' OR Shrink.SEG_CODE = 'JURY' OR Shrink.SEG_CODE = 'GOVT' OR Shrink.SEG_CODE = 'LOA' OR Shrink.SEG_CODE = 'BRVMNT' OR Shrink.SEG_CODE = 'FH', Shrink.STOP_MOMENT, NUll) AS OutStop,
    IIF(DateADD(minute, 5, Shrink.START_MOMENT) < OutIn.Login, CONVERT(decimal(10,2), DATEDIFF(second ,Shrink.START_MOMENT,OutIn.Login)/60.0) ,0.00) AS Late,
    ISNULL(IIF(Convert(decimal(10,2), DATEDIFF(second, Shrink.STOP_MOMENT, OutIn.logout)/60.0) = NULL OR Convert(decimal(10,2), DATEDIFF(second, Shrink.STOP_MOMENT, OutIn.logout)/60.0) > 0.00, 0.00, ABS(Convert(decimal(10,2), DATEDIFF(second, Shrink.STOP_MOMENT, OutIn.logout)/60.0))), 0.00) AS [Left],
    IIF(OutIn.login IS NULL AND Shrink.SEG_CODE = 'SHIFT' ,DATEDIFF(minute,Shrink.START_MOMENT, Shrink.STOP_MOMENT), 0.00) AS NCNS
 FROM (Epi Right JOIN Shrink on Epi.EMP_ID = Shrink.EMP_ID) INNER JOIN OutIn ON (Shrink.DATE = OutIn.DATE) 
 WHERE Shrink.SEG_CODE = 'PABS' OR Shrink.SEG_CODE = 'UABS' OR Shrink.SEG_CODE = 'PPBA' OR Shrink.SEG_CODE = 'UPBA' OR Shrink.SEG_CODE = 'VACA' OR Shrink.SEG_CODE = 'JURY' OR Shrink.SEG_CODE = 'GOVT' OR Shrink.SEG_CODE = 'LOA' OR Shrink.SEG_CODE = 'BRVMNT' OR Shrink.SEG_CODE = 'FH' or Shrink.SEG_CODE = 'SHIFT'
 ORDER BY Badge;

score 0 · Accepted Answer

  SELECT *
  FROM   Employee_Data ED

         INNER JOIN  Phone_Data PD ON
         ED.PHONE_EXTENSION = PD.PHONE_EXTENSION

         INNER JOIN Outage_Data OD ON
         ED.EMP_ID = OD.EMP_ID

score 0 · Accepted Answer

在没有看到您的 SELECT 语句的情况下，这里将返回完整的表数据：

SELECT *
FROM Employee_Data E
JOIN Outage_Data O on E.EMP_ID = O.EMP_ID
JOIN Phone_Data P on P.DATE = O.DATE
ORDER By P.DATE

您可以根据需要进行调整。

sql - Joining three tables with separate sets of identifying columns

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