CODEWITHSUNDEEP
sqlsql-serversql-server-2005t-sql
Waheed
Waheed

Reputation: 10216

Removing duplicate records

I am using the following query 

SELECT SS.sightseeingId AS 'sID'
     , SS.SightseeingName
     , SS.displayPrice AS 'Price'
     , SST.fromDate 
FROM tblSightseeings SS INNER JOIN 
     tblSightseeingTours SST ON SS.sightseeingId =  SST.sightseeingId
WHERE SS.isActive = 1 AND SS.isDisplayOnMainPage = 1

and getting result like this 

sID | SightseeingName                        | Price | fromDate 
------------------------------------------------------------------------------
  2 | Dinner Cruise Bateaux London (Premier) |    40 | 2009-04-01 00:00:00.000
  2 | Dinner Cruise Bateaux London (Premier) |    40 | 2009-12-29 00:00:00.000
 30 | Jack The Ripper, Ghosts and Sinister   |  35.1 | 2009-04-01 00:00:00.000
 30 | Jack The Ripper, Ghosts and Sinister   |  35.1 | 2009-10-01 00:00:00.000
 40 | Grand Tour of London                   |     0 | 2009-05-01 00:00:00.000
 40 | Grand Tour of London                   |     0 | 2010-05-01 00:00:00.000
 87 | Warwick, Stratford, Oxford and The     |    25 | 2009-04-01 00:00:00.000
 87 | Warwick, Stratford, Oxford and The     |    25 | 2009-11-01 00:00:00.000

I want to display the unique records 2 one time 30 one time 40 one time. The duplicate records are due to SST.fromDate.

How do I correct my query??

Upvotes: 2

Views: 434

Answers (4)

Acron
Acron

Reputation: 1398

Wouldn't it enough to just exclude the

SST.fromDate

from the select?

Upvotes: -1

Josh
Josh

Reputation: 6322

try this (example will return the highest date in the group):

SELECT   SS.sightseeingId,
         SS.SightseeingName,
         SS.displayPrice,
         MAX(SST.fromDate) 
FROM     tblSightseeings SS
INNER JOIN  tblSightseeingTours SST 
         ON SS.sightseeingId = SST.sightseeingId
WHERE    SS.isActive = 1 and SS.isDisplayOnMainPage = 1
GROUP BY SS.sightseeingId,
         SS.SightseeingName,
         SS.displayPrice

Depending on what date you want to show you can select the highest using MAX or the lowest using MIN. If you have other criteria you may need to do a subquery.

Upvotes: 1

Alex_L
Alex_L

Reputation: 2654

You can try next query:

select  SS.sightseeingId, SS.SightseeingName, SS.displayPrice,  MAX(SST.fromDate)
from      tblSightseeings SS inner join 
              tblSightseeingTours SST on SS.sightseeingId =  SST.sightseeingId
where    SS.isActive = 1 and SS.isDisplayOnMainPage = 1
GROUP by SS.sightseeingId, SS.SightseeingName, SS.displayPrice

Upvotes: 1

Dave Markle
Dave Markle

Reputation: 97701

Well, the records aren't actually duplicated, because the dates are different. You could do something like:

select  SS.sightseeingId, SS.SightseeingName, SS.displayPrice,  MIN(SST.fromDate) AS FromDate 
from      tblSightseeings SS inner join 
              tblSightseeingTours SST on SS.sightseeingId =  SST.sightseeingId
where    SS.isActive = 1 and SS.isDisplayOnMainPage = 1
GROUP BY ss.sightseeingid, ss.sightseeingname, ss.displayprice

Upvotes: 1

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