Sub data flow (Optimized SQL) execution order ?

I am looking for a solution in Designer of Data Services XI 3.2.
Is there a way to specifiy in a Data Flow
(without using 'Transaction control' options and Embedded Data Flow )
the order in which Sub data flows ( Optimized SQL ) are executed ?
Thank you in advance.
Georg

First, if you are using MDX to calculate the value of C - don’t.  MDX script logic can be extremely inefficient from a processing and memory utilization standpoint vs. SQL logic even if the syntax is shorter.
Logic executes in the order you place the code in the script.  You have three commit blocks and they would execute in that order.  I notice you don't have a commit after the calculation for C.  You should always put a commit statement after each calculation section or you can get uncommitted data even though there is an implied commit after the last line of code executes.  Don't get in the habit of relying on this.
You can see the logic logs from the temp folders on the file server as suggested above but they will mainly give you the SQL queries generated which can be helpful in debugging scoping issues but they can be hard to sift through.
I recommend trying putting a commit statement after your calculation of C and that will probably resolve the issue.  I also strongly suggest you switch the calculation to SQL logic to avoid performance issues when you start having these calculations run under high concurrency or on larger volumes of data than what you're probably testing with.

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