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SQL Server 2005
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SQL Server 2005 Integration Services
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Precedence Constraints
Precedence Constraints
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aprasy
aprasy
Posted Wednesday, April 22, 2009 1:36 AM
SSC Rookie
Group: General Forum Members
Last Login: Wednesday, May 19, 2010 3:52 AM
Points: 35,
Visits: 129
Hi All,
I have a question about Precedence Constraints in data flow task. My scenario is i have used multicast to connect multiple destination. In that destination i have inserted to some of the tables. Destination2 table having foreign key of destination1. The destination2 will start once the destination1 completes. I dont know how it was worked. Whether i need to put any precedence over there.
Thanks in advance
Pras
Post #702097
CozyRoc
CozyRoc
Posted Wednesday, April 22, 2009 8:00 AM
Ten Centuries
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Last Login: 2 days ago @ 11:51 AM
Points: 1,106,
Visits: 2,111
aprasy (4/22/2009)
Hi All,
I have a question about Precedence Constraints in data flow task. My scenario is i have used multicast to connect multiple destination. In that destination i have inserted to some of the tables. Destination2 table having foreign key of destination1. The destination2 will start once the destination1 completes. I dont know how it was worked. Whether i need to put any precedence over there.
Thanks in advance
Pras
Split your loading process in two separate data flows and make the second data flow execute only after the first data flow is done. There is no precedence constraint in a data flow.
---
SSIS Tasks Components Scripts Services | http://www.cozyroc.com/
Post #702355
aprasy
aprasy
Posted Tuesday, April 28, 2009 12:12 AM
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Last Login: Wednesday, May 19, 2010 3:52 AM
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Thanks for your reply. I dont know how to run the second data flow task while the first data flow task is done. Can u clear this? I am curious to know how to do that.
Thanks
Post #705524
Phil Parkin
Phil Parkin
Posted Tuesday, April 28, 2009 1:17 AM
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You will have two dataflows appearing on your Control Flow - simply join (a) to (b) and you can be sure that (b) will execute after (a).
Not sure that helps you - as you want all of the processing controlled within a single DF task, I think. I can't see an obvious way of controlling precedence immediately after a Multicast, but I'm betting CozyRoc has a solution.
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Post #705547
CozyRoc
CozyRoc
Posted Tuesday, April 28, 2009 5:46 AM
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aprasy (4/28/2009)
Thanks for your reply. I dont know how to run the second data flow task while the first data flow task is done. Can u clear this? I am curious to know how to do that.
Thanks
You just connect the data flow tasks with the standard connector.
---
SSIS Tasks Components Scripts Services | http://www.cozyroc.com/
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