Sql 前面 Manufacturer DateOF Status Prefer Dell 05-2014 ComputerInstalled 30 Dell 05-2014 Com

前面

Manufacturer    DateOF  Status              Prefer
Dell            05-2014 ComputerInstalled   30
Dell            05-2014 ComputerUninstalled 70
Dell            05-2014 ComputerUninstalled 70
Dell            05-2014 ComputerUninstalled 70
Dell            05-2014 ComputerInstalled   30
Dell            05-2014 ComputerUninstalled 70
Dell            05-2014 ComputerNew         26
Dell            05-2014 ComputerNew         26
Dell            05-2014 ComputerInstalled   30
Dell            05-2014 ComputerInstalled   30

SELECT sq.*
FROM
(
SELECT
*,
RANK() OVER (PARTITION BY Manufacturer,DateOF ORDER BY Prefer) AS RankPrefer
FROM
table1
WHERE
RankPrefer = 1
) sq

Manufacturer    DateOF  Status              Prefer
Dell            05-2014 ComputerNew         26
Dell            05-2014 ComputerNew         26

Manufacturer    DateOF  Status              Prefer
Dell            05-2014 ComputerInstalled   30
Dell            05-2014 ComputerInstalled   30
Dell            05-2014 ComputerNew         26
Dell            05-2014 ComputerNew         26
Dell            05-2014 ComputerInstalled   30
Dell            05-2014 ComputerInstalled   30

INSERT Table1 VALUES ('HP10011','04/01/2014','ComputerUninstalled',70)
INSERT Table1 VALUES ('HP10011','04/04/2014','ComputerOld',26)
INSERT Table1 VALUES ('HP10011','04/04/2014','ComputerOld',26)
INSERT Table1 VALUES ('HP10011','04/30/2014','ComputerUninstalled',70)
INSERT Table1 VALUES ('HP10011','05/23/2014','QuickDispose',10)
INSERT Table1 VALUES ('HP10011','06/03/2014','QuickDispose',10)
INSERT Table1 VALUES ('HP10077','04/01/2014','ComputerUninstalled',70)
INSERT Table1 VALUES ('HP1910','04/25/2014','QuickDispose',10)
INSERT Table1 VALUES ('HP1910','05/01/2014','ComputerInstalled',30)
INSERT Table1 VALUES ('HP1910','05/01/2014','ComputerInstalled',30)
INSERT Table1 VALUES ('HP1910','05/01/2014','ComputerInstalled',30)
INSERT Table1 VALUES ('HP1910','05/01/2014','ComputerInstalled',30)
INSERT Table1 VALUES ('HP1910','05/01/2014','ComputerUninstalled',70)
INSERT Table1 VALUES ('HP1910','05/01/2014','ComputerUninstalled',70)
INSERT Table1 VALUES ('HP1910','05/01/2014','ComputerUninstalled',70)
INSERT Table1 VALUES ('HP1910','05/01/2014','ComputerUninstalled',70)
INSERT Table1 VALUES ('HP1910','05/02/2014','ComputerInstalled',30)
INSERT Table1 VALUES ('HP1910','05/02/2014','ComputerInstalled',30)
INSERT Table1 VALUES ('HP3720','05/07/2014','ComputerInstalled',30)
INSERT Table1 VALUES ('HP3720','05/07/2014','ComputerInstalled',30)
INSERT Table1 VALUES ('HP3720','05/07/2014','ComputerUninstalled',70)
INSERT Table1 VALUES ('HP3720','05/07/2014','ComputerUninstalled',70)
INSERT Table1 VALUES ('HP3720','05/07/2014','ComputerUninstalled',70)
INSERT Table1 VALUES ('HP3720','05/07/2014','ComputerUninstalled',70)
INSERT Table1 VALUES ('HP3720','05/08/2014','ComputerInstalled',30)
INSERT Table1 VALUES ('HP3720','05/08/2014','ComputerInstalled',30)
INSERT Table1 VALUES ('HP3720','05/08/2014','ComputerInstalled',30)
INSERT Table1 VALUES ('HP3720','05/08/2014','ComputerUninstalled',70)
INSERT Table1 VALUES ('HP3720','06/06/2014','ComputerUninstalled',70)
INSERT Table1 VALUES ('HP3720','06/06/2014','ComputerUninstalled',70)
INSERT Table1 VALUES ('HP3720','06/10/2014','ComputerOld',26)
INSERT Table1 VALUES ('HP3720','06/10/2014','ComputerUninstalled',70)
INSERT Table1 VALUES ('HP3720','06/10/2014','ComputerUninstalled',70)
INSERT Table1 VALUES ('HP3720','06/11/2014','ComputerOld',26)
INSERT Table1 VALUES ('HP3720','06/11/2014','ComputerUninstalled',70)
INSERT Table1 VALUES ('HP3720','06/11/2014','ComputerUninstalled',70)

'HP1910','05/01/2014','ComputerInstalled',30
'HP1910','05/01/2014','ComputerUninstalled',70

Manufacturer    DateOF  Status          Prefer
HP10011 2014-04-01  ComputerUninstalled 70
HP10011 2014-04-04  ComputerOld         26
HP10011 2014-04-04  ComputerOld         26
HP10011 2014-04-30  ComputerUninstalled 70
HP10011 2014-05-23  QuickDispose        10
HP10011 2014-06-03  QuickDispose        10
HP10077 2014-04-01  ComputerUninstalled 70
HP1910  2014-04-25  QuickDispose        10
HP1910  2014-05-01  ComputerInstalled   30
HP1910  2014-05-01  ComputerInstalled   30
HP1910  2014-05-01  ComputerInstalled   30
HP1910  2014-05-01  ComputerInstalled   30
HP3720  2014-05-07  ComputerInstalled   30
HP3720  2014-05-07  ComputerInstalled   30
HP3720  2014-05-08  ComputerInstalled   30
HP3720  2014-05-08  ComputerInstalled   30
HP3720  2014-05-08  ComputerInstalled   30
HP3720  2014-06-06  ComputerUninstalled 70
HP3720  2014-06-06  ComputerUninstalled 70
HP3720  2014-06-10  ComputerOld         26
HP3720  2014-06-10  ComputerUninstalled 70
HP3720  2014-06-10  ComputerUninstalled 70
HP3720  2014-06-11  ComputerOld         26
HP3720  2014-06-11  ComputerUninstalled 70
HP3720  2014-06-11  ComputerUninstalled 70

WITH sq AS
( SELECT *, RANK() OVER (PARTITION BY Manufacturer,DateOF ORDER BY Prefer) AS RankPrefer
  FROM table1
)
SELECT *
FROM   sq
WHERE  RankPrefer <= (SELECT TOP 1 RankPrefer FROM sq WHERE Status != 'ComputerNew' ORDER BY RankPrefer)

with r as (
      select t.*,
             rank() over (partition by manufacturer, dateof order by Prefer) as seqnum
      from table1 t
     ),
     r1 as (
      select r.*
      from r
      where seqnum = 1
     )
select r.*
from r
where r.seqnum = 1 or
      (exists (select 1 from r1 where status = 'ComputerNew' and r1.dateof = r.dateof) and r.status = 'ComputerInstalled' or
       exists (select 1 from r1 where status = 'ComputerOld' and r1.dateof = r.dateof) and r.status = 'ComputerUninstalled'
      );

;with r as (
      select t.*,
             CAST(MONTH(dateof) AS VARCHAR(2)) + '-' + CAST(YEAR(dateof) AS VARCHAR(4)) AS EffDate,
             rank() over (partition by manufacturer, CAST(MONTH(dateof) AS VARCHAR(2)) + '-' + CAST(YEAR(dateof) AS VARCHAR(4)) order by Prefer) as seqnum
      from Table1 t
     ),
     r1 as (
      select r.*
      from r
      where seqnum = 1
     )
select r.*
from r
where r.seqnum = 1 
or
(
  r.Status = 'ComputerUninstalled' and 
  exists ( Select 1 
           from  r1 
           where r1.Manufacturer = r.Manufacturer
           and   r1.EffDate = r.EffDate
           and   r1.Status = 'ComputerOld' )
  and   r.seqNum = ( Select Min(SeqNum) From r as r2
                      Where r2.Manufacturer = r.Manufacturer
                      And   r2.EffDate = r.EffDate
                      And   r2.SeqNum > 1 )          
)
or
(
  r.Status = 'ComputerInstalled' and 
  exists ( Select 1 
           from  r1 
           where r1.Manufacturer = r.Manufacturer
           and   r1.EffDate = r.EffDate
           and   r1.Status = 'ComputerNew' )
  and   r.seqNum = ( Select Min(SeqNum) From r as r2
                      Where r2.Manufacturer = r.Manufacturer
                      And   r2.EffDate = r.EffDate
                      And   r2.SeqNum > 1 )          
);