Detecting Duplicates by Reference Code

Detecting Duplicates by Reference Code

In some scenarios, you need to ensure that a reference code is completely unique among a record type.

 
To do this, use the following SQL script:

  1. --Look for duplicate records in the __M_Matters table
  2. SELECT
  3.     *
  4. FROM
  5.     --Change this to the table we want to identify duplicates in
  6.     __M_Matters V1,
  7.     (
  8.         SELECT
  9.             Final_ReferenceCode,
  10.             COUNT(*) as Duplicates
  11.         FROM
  12.             __M_Matters --This needs to match the same table as above
  13.         GROUP BY
  14.             Final_ReferenceCode
  15.         HAVING 
  16.             COUNT(*) > 1
  17.      ) V2
  18. WHERE 1=1
  19.     AND V1.Final_ReferenceCode = V2.Final_ReferenceCode
  20. ORDER BY
  21.     V1.Final_ReferenceCode





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