Question

I am trying to get all the duplicated records based on :

accession_id, 
  check_num,
  procedure_code,
  paid_amt,

this query will return the above along with the number of times those fields were repeated.

however, i want to only return those that occur more than once.

  select    
  ACCESSION_PAYMENTS_DAILY_KEY, 
  accession_id, 
  check_num,
  procedure_code,
  paid_amt,
  row_number() 
  over 
  (partition by   accession_id, check_num,procedure_code,paid_amt order by ACCESSION_PAYMENTS_DAILY_KEY) as occurrence
          from      [MILLENNIUM_DW_DEV].[dbo].[F_PAYOR_PAYMENTS_DAILY]         
   where PROCEDURE_CODE is not null
   and PAID_AMT>0

when i add the filter condition occurrence>1 to the above query, i am getting this error:

Msg 207, Level 16, State 1, Line 13
Invalid column name 'occurrence'.

how can i return the records only if they occur more than once?

Answer 1

If you want to use an alias in a WHERE clause then you can wrap it in another SELECT statement.

SELECT *
FROM
(
  select ACCESSION_PAYMENTS_DAILY_KEY, 
    accession_id, 
    check_num,
    procedure_code,
    paid_amt,
    row_number() over (partition by   accession_id, check_num,procedure_code,paid_amt order by ACCESSION_PAYMENTS_DAILY_KEY) as occurrence
  from      [MILLENNIUM_DW_DEV].[dbo].[F_PAYOR_PAYMENTS_DAILY]         
  where PROCEDURE_CODE is not null
     and PAID_AMT>0
) x
WHERE x.occurrence>1