What is the difference between Execute SQL Task and OLE DB Command

Besides the obvious, Execute SQL Task being used in Control Flow, and
OLE DB Command being used in Data Flow what is the difference between the two? Is one supposed to use
Execute SQL Task to produce a result set that then gets handed over to
Data Flow and OLE DB Command ? Everything that I have seen on
OLE DB Command is pretty much execution of a Stored Procedure with ? parameters. It seems as though I got to a point where I had to perform my data edits pretty much entirely in a Stored Procedure executed by
OLE DB Command rather than trying to use the SSIS GUI for everything. I didn't really see in any of my Google searches out there that simply used
OLE DB Command as a straight parameterized SQL against tables for editing and cleansing purposes and handling returns back from SQL Server for COUNT(*), etc..
I know I have posted multiple forums out there regarding this issue but I cannot seem to get a straight answer and some solid direction. So for now, my
Execute SQL Task gives me my editable result set and then control is handed off to
Data Flow and ultimately to my Stored Procedure executed by an
OLE DB Command which pretty much does the chunking for me and performs my data edits and handles my record anomalies through SQL Server Table data stores accordingly or sets flags accordingly if the data passes.
I welcome your thoughts and Thanks for your review and Thanks in advance for any replies and direction that anyone might provide.

Hi ITBobbyP,
OLE DB Command will always process data row by row, whereas Execute SQL task if you call a Stored Procedure it can process data in bulk. As you said, the biggest difference is that Execute SQL Task being used in Control Flow, and OLE DB Command being
used in Data Flow. They are used in different places.
Using Execute SQL Task, we can save the rowset returned from a query into a variable. The Execute SQL task can be used in combination with the Foreach Loop and For Loop containers to run multiple SQL statements. These containers implement repeating control
flows in a package and they can run the Execute SQL task repeatedly. For example, using the Foreach Loop container, a package can enumerate files in a folder and run an Execute SQL task repeatedly to execute the SQL statement stored in each file. I think this
is a big advantage for Execute SQL Task.
As to OLE DB Command, we can easily run an SQL statement for each row transformation in a data flow, then directly insert the outputs to a destination.
To sum up, there are many difference between those two components. We should make better choice based on our actual requirement.
Thanks,
Katherine Xiong
Katherine Xiong
TechNet Community Support

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