Stored Procedure - usp_DimCurriculumLoad

Property	Value
Name	usp_DimCurriculumLoad_DupKeyCheck
Schema	dbo
Is Encrypted	False
Ansi Nulls Status	True
Quoted Identifier Status	True
Description

Name

Data Type

Direction

Description

Name	Type
Verify_dbo_DimCurriculum	Table

Name	Type
Verify_dbo_DimCurriculum	TABLE

Object

Property

Value

Object

Property

Value

/****** Object: StoredProcedure [dbo].[usp_DimCurriculumLoad_DupKeyCheck] Script Date: 03/09/2017 17:21:49 ******/
SET ANSI_NULLS ON
SET QUOTED_IDENTIFIER ON
/* Check for Duplicate Curriculum rows after the primary SELECT Statement*/
CREATE PROC [dbo].[usp_DimCurriculumLoad_DupKeyCheck]
AS
SET NOCOUNT ON
-- Create in-memory table for later use within this proc
CREATE TABLE #Curriculum_Dup
    (
    [ReferenceNumberAK] VARCHAR(15) NOT NULL
    )
-- populate table with duplicate StudentTermAK values
INSERT INTO #Curriculum_Dup
    (
    [ReferenceNumberAK]
    )
    select ReferenceNumberAK
    from Verify_dbo_DimCurriculum
    group by ReferenceNumberAK
    having COUNT(ReferenceNumberAK) > 1

--Detect duplicate records and set flag
UPDATE Verify_dbo_DimCurriculum
SET RowIsDuplicate = 'Y'
FROM Verify_dbo_DimCurriculum
WHERE ReferenceNumberAK
IN
(
select ReferenceNumberAK
from #Curriculum_Dup
);
--Set RowIsSelected = N for duplicated records (detected above)
UPDATE RecordsToIgnore
SET RowIsSelected = 'N'
FROM dbo.Verify_dbo_DimCurriculum RecordsToIgnore
INNER JOIN
(
--Returns the first record for a set of duplicated StudentTerms
--(as defined as minimum of surrogate key of temp table)
SELECT ReferenceNumberAK, MIN(VerifyCurriculumSK) as Min_VerifyCurriculumSK
FROM Verify_dbo_DimCurriculum
WHERE ReferenceNumberAK in
  (
    select ReferenceNumberAK
    from #Curriculum_Dup
  )
GROUP BY ReferenceNumberAK
) as Keeper
ON (
Keeper.ReferenceNumberAK = RecordsToIgnore.ReferenceNumberAK
AND
Keeper.Min_VerifyCurriculumSK <> RecordsToIgnore.VerifyCurriculumSK
)
WHERE RecordsToIgnore.RowIsDuplicate = 'Y';