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Join several records from diferent tables of a staging area in one table on the DW Expand / Collapse
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Posted Tuesday, July 2, 2013 2:50 PM
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Hi,

I´m new using SSIS so I need help - thanks!


I´ve too tables A and B, and I need to create a C table with information of one of the tables.


Table A query

SELECT [PRODUCT_CODE]
,[DESCRIPTION]
,[PRODUCT_GROUP_ID]
,[SEASON]
FROM [DATA].[D_PRODUCT]


Table B query

SELECT [PRODUCT_GROUP_ID]
,[LONG_DESCRIPTION]
FROM [DATA].[D_PRODUCT_GROUP]


Table C query

SELECT P.[PRODUCT_CODE], P.[DESCRIPTION], P.[PRODUCT_GROUP_ID], G.[DESCRIPTION] DESCPROD, P.[PRODUCT_GENDER], P.[SEASON]
FROM [DATA].[D_PRODUCT] P, [DATA].[D_PRODUCT_GROUP] G
WHERE P.[PRODUCT_GROUP_ID] = G.[PRODUCT_GROUP_ID]


I need your help to learn how to implement this in SSIS?


The information off the A table is in a Flat File A.

The information off the B table is in a Flat File B.


In SSIS:

- I already read the A ff and put the data into a A table - in the satging area DB,


- I already read the B ff and put the data into a B table - in the satging area DB,


Now, what do I´ve to do to put the information I need in one C table in the DW DB?


Thank you.
José
Post #1469753
Posted Wednesday, July 3, 2013 4:49 AM


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You can either execute the SQL statement you provided in an Execute SQL Task, but put an INSERT INTO before it of course
Or you could use the SQL statement in an OLE DB source in a dataflow and write the results to table C using an OLE DB Destination with fast load option.

Another alternative that doesn't use the staging database is reading the two flat files A and B in a data flow, sorting them and do a MERGE JOIN on PRODUCT_GROUP_ID and writing the result to table C. The sort is necessary as it is a prerequisite for the MERGE JOIN. If your files are very large, I would choose for the staging area.




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