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SSIS Dataflow merge join  and sort tranfomation (fully block performance)

Posted on 2012-04-05
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Last Modified: 2012-06-27
Hi,
Currently working with Dataflow task in ssis having an issue with merge join.

merge join always require sorted property o set true.

then if we want to use multiple merge join then we have use sort tranformation which is fully block so which reduces the performance.

Is there any way to overcome these problem.

Thank in Advance.
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Question by:nishant joshi
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Expert Comment

by:SThaya
ID: 37815549
Hi,

  For sorting incomming rows ,instead Sort Transformation .you can set the sort operation in OLD DB source .
check the below link

http://www.ssistalk.com/2009/09/17/ssis-avoiding-the-sort-components/

if suppose you are doing any join opeartion use Look up ... this is fast in performance wise .

by using the above you can redirect your matching and nonmatching rows like merge join .

if you want more information , pleaae let me know your Scenario.

Thaya.S
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Accepted Solution

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nishant joshi earned 0 total points
ID: 37815730
Thanks for comment.
I want use multiple joins

like

select * from test t
join xys on xyz. =
join xyz1 on xyz1. = 

Open in new window


i know look up with is fast for less data not for big data.
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LVL 14

Author Closing Comment

by:nishant joshi
ID: 38103378
Not get solution
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