Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

SSIS 2008 Lookup Task for Child Table Population

Posted on 2011-03-22
2
Medium Priority
?
594 Views
Last Modified: 2012-05-11
I am creating an SSIS 2008 (R2) package to do a data transformation job.  I have child tables and a parent. The primary key of the child record is stored in a column in the parent.  I want to use SSIS (perhaps the lookup task will do this) to insert records into the child where they do not exist already, and put the appropriate key into the parent table.  Will the Lookup component do this?  

To illustrate, here is the current T-SQL from a stored proc that populates the child table.

How would I accomplish this using SSIS data flow tasks?  Obviously, I can output to a table and execute this SQL but I am wondering if the Lookup, Merge or other tasks would do this more efficiently?


-- This inserts only new records that do not exist
INSERT INTO dbo.Users_ChildTable (    
    FullName
   ,LastName
   ,FirstName
   ,MI
   ,Address1
   ,Address2
   ,PostalCode
   ,Department
   ,SSN
   ,CreateDate
)
SELECT DISTINCT
    a.UserFullName,
    a.UserLastName,
    a.UserFirstName,
    a.UserMI,
    a.UserAddress1,
    a.UserAddress2,
    a.UserPostalCode,
    a.UserDept,
    a.UserSSN,
    GETDATE()
FROM
    dbo.ParentTableData a LEFT JOIN
    dbo.Users_ChildTable u ON
        ISNULL(a.UserLastName,'') = ISNULL(u.LastName,'') AND
        ISNULL(a.UserFirstName,'') = ISNULL(u.FirstName,'') AND
        ISNULL(a.UserMI,'') = ISNULL(u.MI,'') AND
        ISNULL(a.UserAddress1,'') = ISNULL(u.Address1,'') AND
        ISNULL(a.UserAddress2,'') = ISNULL(u.Address2,'') AND
        ISNULL(a.UserPostalCode,'') = ISNULL(u.PostalCode,'') AND
        ISNULL(a.UserDept,'') = ISNULL(u.Department,'') AND
        ISNULL(a.UserSSN,'') = ISNULL(u.SSN,'') 
WHERE
    u.SSN IS NULL AND
    u.LastName IS NULL;
    
-- Now update the key field in the parent for the appropriate UserID

    UPDATE dbo.ParentTableData
    SET dbo.ParentTableData.UserID = u.UserID
    FROM
        dbo.ParentTableData a INNER JOIN
        dbo.Users_ChildTable u ON
        ISNULL(a.UserLastName,'') = ISNULL(u.LastName,'') AND
        ISNULL(a.UserFirstName,'') = ISNULL(u.FirstName,'') AND
        ISNULL(a.UserMI,'') = ISNULL(u.MI,'') AND
        ISNULL(a.UserAddress1,'') = ISNULL(u.Address1,'') AND
        ISNULL(a.UserAddress2,'') = ISNULL(u.Address2,'') AND
        ISNULL(a.UserPostalCode,'') = ISNULL(u.PostalCode,'') AND
        ISNULL(a.UserDept,'') = ISNULL(u.Department,'') AND
        ISNULL(a.UserSSN,'') = ISNULL(u.SSN,'')

Open in new window

0
Comment
Question by:richxyz
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 16

Accepted Solution

by:
vdr1620 earned 750 total points
ID: 35199489
You can use Lookup to do this.. you will need to do the Lookup on the key column and use OLEDB command Task to update the Values or OLEDB destination to insert values.

In the OLEDB command make sure the parameters are mapped correctly in the same order

http://www.sqlis.com/post/OLE-DB-Command-Transformation.aspx
0
 

Author Closing Comment

by:richxyz
ID: 35235254
I was curious about how efficient, i.e. performance, doing it with the lookup task would be as opposed to my current stored procedure method.  That's why I said PARTIALLY.
0

Featured Post

Will your db performance match your db growth?

In Percona’s white paper “Performance at Scale: Keeping Your Database on Its Toes,” we take a high-level approach to what you need to think about when planning for database scalability.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article shows gives you an overview on SQL Server 2016 row level security. You will also get to know the usages of row-level-security and how it works
When trying to connect from SSMS v17.x to a SQL Server Integration Services 2016 instance or previous version, you get the error “Connecting to the Integration Services service on the computer failed with the following error: 'The specified service …
Using examples as well as descriptions, and references to Books Online, show the different Recovery Models available in SQL Server and explain, as well as show how full, differential and transaction log backups are performed
Via a live example, show how to extract insert data into a SQL Server database table using the Import/Export option and Bulk Insert.

722 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question