Error in merge statement when trying to impliment SCD type 2 using merge...

Question

Hi ,
I'm trying to impliment SCD type 2 using Merge using below blog as reference but sime how it is erroring out with error
http://www.made2mentor.com/2013/08/how-to-load-slowly-changing-dimensions-using-t-sql-merge/
Msg 207, Level 16, State 1, Line 40
Invalid column name 'Current'.
Msg 207, Level 16, State 1, Line 38
Invalid column name 'Current'.
Msg 207, Level 16, State 1, Line 47
Invalid column name 'Current'.
Here is the code below...
--Create Temporaty table to hold dimension records
IF OBJECT_ID('tempdb..#DimVirtualQueue') IS NOT NULL
DROP TABLE #DimVirtualQueue;
CREATE TABLE #DimVirtualQueue
( [VQ_name] [varchar](50) NULL,
[contact_type] [varchar](50) NULL,
[center_node_id] [int] NULL,
[sed_id] [datetime] NULL,
[eed_id] [datetime] NULL,
[insert_date] [datetime] NULL,
[Current] [char](1) NOT NULL
INSERT INTO #DimVirtualQueue(VQ_name, contact_type, center_node_id, sed_id, eed_id, insert_date,[Current] )
SELECT VQ_name, contact_type, center_node_id, sed_id , eed_id,GETDATE(),'Y'
FROM
( --Declare Source and Target tables.
MERGE dbo.tblSwDM_dim_VQ_test AS TARGET
--Source
USING (SELECT
RTRIM(LTRIM(Stage.RESOURCE_NAME)) AS VQ_name,
'Unknown' AS contact_type,
0 AS center_node_id,
CONVERT(INT,CONVERT(VARCHAR(8),GMT_START_TIME,112)) AS sed_id,
CONVERT(INT,CONVERT(VARCHAR(8),ISNULL(GMT_END_TIME,'2070-01-01'),112)) AS eed_id,
GETDATE() AS insert_date
FROM dbo.tblGenesys_stg_RESOURCE_ Stage
WHERE resource_type = 'queue'
AND resource_subtype = 'VirtualQueue'
AND NOT EXISTS (SELECT 1 FROM dbo.tblSwDM_dim_VQ AS dim
WHERE RTRIM(LTRIM(stage.RESOURCE_NAME)) = RTRIM(LTRIM(dim.vq_name))) ) SOURCE
ON TARGET.VQ_name = SOURCE.VQ_name
WHEN NOT MATCHED BY TARGET
THEN
INSERT ( VQ_name, contact_type, center_node_id, sed_id, eed_id, insert_date,[Current] )
VALUES (SOURCE.VQ_name,SOURCE.contact_type,SOURCE.center_node_id,SOURCE.sed_id,SOURCE.eed_id,SOURCE.insert_date,'Y')
WHEN MATCHED AND TARGET.[Current] = 'Y'
AND EXISTS (
SELECT SOURCE.VQ_name
EXCEPT
SELECT TARGET.VQ_name
--Expire the records in target if exist in source.
THEN UPDATE SET TARGET.[Current] = 'N',
TARGET.[eed_id] = SOURCE.eed_id
OUTPUT $Action ActionOut, SOURCE.VQ_name,SOURCE.contact_type,SOURCE.center_node_id,SOURCE.sed_id,SOURCE.eed_id) AS MergeOut
WHERE MergeOut.ActionOut = 'UPDATE';
--Insert data into dimension
INSERT tblSwDM_dim_VQ_test
SELECT VQ_name,contact_type,center_node_id,sed_id,eed_id,insert_date,[Current] FROM #DimVirtualQueue
Any help to resolve issue is appreciated...
Thanks,
Vishal..

Answer 1

You need to show the DDL of your target table: dbo.tblSwDM_dim_VQ_test.
Do you have a column named [Current] in this table?