SSIS Precedence Constrains Not Showing
Dec 5, 2007
I have DTSX package where all the Control Flow Boxes are connected by precedence constraints (the Green Lines).
However, only half of them visible!
If I try and add another it says:
Cannot create connector.
Only one workflow can exist between the same two executables.
I don't want to have to drop and create them all the constraints (because there are a lot of them!)
But I can't even do that - since I can't see them, I can't select them; and I don't think I can delete them without being able to select them. Am I missing something? Zooming in makes everything larger, but it doesn't make my Green Lines reappear.
Help!
And yes, I'm using the latest version of everything:-
Microsoft Visual Studio 2005
Version 8.9.50727.762 (SP.050727-7600)
SQL SERVER 2005
9.00.3054.00 SP2 Developer Edition
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Jan 31, 2007
Hi there!
I've a few tasks in my dataflow. Some of them are executed depending on an precedence constrain. Works fine.
The problem is following: I want to write a success message (execute SQL task), when all the tasks who have been executed have done this with success. For example, i ve ten tasks, and 2 of them are executed (successfully). This is good, i want to execute my task to write the success message.
I tried to set these precedence constraints with EvalOP = ExpressionOrConstraint, Values = Success and an expression, what returns TRUE, when the task above is not executed (the condition from a precedence constraint above). But the task to write my message will never be executed, because it seems the task does'nt give any result (neither success nor failure) when they ar not executed, and so my AND-Constraint for the success message task will only get TRUE, when ALL task are executed (and successful).
Is there any chance to get somethink like "isSuccess OR IsNotExecuted" into a precedence constraint?
Thanks, Torsten
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Aug 31, 2007
Dear Friends,
In my controlFlow I have 2 sequence container... Sequence1 goes to Sequence2 if an expression valuate to TRUE.
If the expression value is true, than there isn's any problem and sequence2 runs, but if the expression is FALSE the sequence2 container doesn't run.
OK?
In the case of expression valueate to FALSE I need to generate an error or an information in order to get it in the eventhandler automatic...
I can add a script task to make the package failure... but what I insert in the precedence constraint editor from Sequence1 to the scripttask?
Imagine... the expression from Sequence1 to Sequence2 is a>=b
The expression from Sequence1 to ScriotTask os a<b? (How can I define this only to run when the expression (seq1 to Seq2) is false??
Someone know how?
Regards!
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Aug 27, 2007
Dear all,
I've been searching the article for error handling in SSIS but seems no article have same problem exactly as mine. In my package there's container, it contains Data Flow task and some of Script tasks. I put an error precedence from Data Flow task into Script task that contains script for log an error that might be occured. The Data Flow task imports data from flat file into SQL Server 2005 and I've set a semicolon as the column delimiter. Unfortunately there is a data in flat file that had one column contain semicolon as its value.
This would trigger an error and I hope the error would be logged into a table as I wrote inside Script task. But it didn't work. The error precedence won't work, the package stop in flat file source instead. I've been trying the event handler but it didn't work either. Maybe I got wrong implementation, anybody can help me explain the error handler and solve the problem ?
Here is the capture of my package, since I didn't know how to attach the picture in this forum.
Thanks in advance.
Best regards,
Hery
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Oct 29, 2006
This is more a medium level annoyance than a problem. When I save a package, close it and later re-open it, the precendence constraints end up all over the place making my neatly layed out diagram a shambles.
Call me anally retentive if you like (you wont be the first ), but I find this extremely annoying. Does anybody else have this problem? Does anyone have a solution?
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Dec 13, 2007
Hi,
I'm building a package wherein I perform a SQL task(A) if the error log is not empty. This same SQL task(A) is also being used by another data flow task(B). The precedence points from B to A bottom to top. When I execute, all the tasks in the downward direction (precedence pointing downward/sideways) execute but this one doesnt as it points updwards. I can copy and paste task A and make B point to A downward, but I dont want to duplicate A in the same package.
Is there any other approach?
If you dont understand the above, see the flow:
X (SQL task) ----on success-------------> A (SQL task)
| ^
| |
...(sequence of steps) |
| |
| |
B(Data Flow Task) ---------failure --------|
Execution flow doesnt move from B to A, even though its a failure condition. Hope this explains the problem.
Thanks and Regards,
Subha Fernando
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Oct 4, 2006
Hello
What are your experiences with the alignment of constrains between tasks?
I find it hard to align two task in an exact same vertical or horizontal position.
When you grab the green constrain lines with your mouse, you can see a soft pink dashed line which tels you which way to go with your mouse but it is so hard to get straight lines.
Is there a auto align task feature or something else I don't know of?
How do you guys do it?
Regards,
Worf
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Oct 12, 2007
Hello!
I'm looking for some ideas about how
to ensure constraints on multiple rows.
Of course one can use stored procedures and/or triggers while inserting.
Other ideas?
The reason for this question is that it could be hard to ensure,
because if lock level is not high enough, you can get duplicates during concurrency,
if lock level is too high, it can result in deadlocks.
Thanks
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May 29, 2008
Hello, is possible Enable or disable constrains in a defined schema? or Alter constrains in a defined schema.
For example in schema1 for user1 the constrains definitions are enabled.
There are another schema called schema2 for user2 and constrains definitions are disabled.
Thanks.
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Mar 7, 2008
Hi,
We use SSIS to download data from a DB2 database using DB2 Connect and MS OLE DB as source and target drivers. It runs fine most of the time BUT there is one issue that we can not solve.
Sometime DB2 table is being used by some other processes, or in other words two different processes are trying to access same table and rows and the situation is what termed as CONTENTION. So one of those processes will fail and finally only one will succeed. We don't have a control over this DB2 source, and don't know what other processes might be running on it.
Our problem is SSIS fails and doesn't returns any error in the log file for this Contention situation. We only know it when our application reports that certain data is missing OR we check that DTS failed on some step (not neccesarily on same always), but then error log doesn't gives us any error message.
Could anyone please analyze and instruct if there are some ways in SSIS 2005 to catch such errors, or to avoid such situations. Feel free to write questions if you have any.
Regards
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Oct 25, 2015
I installed the Feature Pack Balanced Data Distributor control on my PC to use with SQL Server 2014 64 bit. I have used the control with SQL Server 2014 and SSDT so I was familiar with the process. Unfortunately, I cannot get the control to appear in the toolbox. No error messages appear, BDD just doesn't appear in the toolbox. I have tried un-installing, reinstalling, installing SQL Server 2014 SP1, installing again, rebooting a number and nothing works. The control just does not appear in the toolbox. It doesn't not appear when I go to choose items either. What does it take to get BBD to appear in the SSIS Toolbox for VS?
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Mar 13, 2008
How is the column precedence determined when more then one column is included in the group by clause? I am using T-SQL.
for example:
SELECT VendorName, VendorState, SUM(Invoices.InvoiceTotal) AS InvoiceSum
FROM Vendors JOIN Invoices ON
Vendors.VendorID = Invoices.InvoiceID
GROUP BY VendorState, VendorName
I would expect this statement to group by VendorState first but my result set is grouping by VendorName and then VendorState.
Am I missing something?
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May 22, 2008
hi all - this is the first time i've worked with SSIS / Business Intelligence, and I'm having an issue with a piece of basic functinoality.
I'm working with some dtsx jobs which were all conversions from Sql Server 2000 DTS jobs. The conversion process "seemed" to go smoothly. I used the Migration Wizard, and it successfully converted my outputted DTS job files into DTSX files.
In the Business Intelligence design environment (Control Flow) for a specific dtsx package, I have two tasks that are linked together by a Precedence Constraint.
* Task A Truncates all data in Database B --> Table A
* the precedence constraint says that if Task A is successful, then go on to Task B (or at least i think it does)
* Task B copies the newest data from Database A --> Table A over to Database B --> Table A
Everything appears to be correct, but if i right-click Task A and perform an "Execute Task" command, Task A will run successfully, but then stops short without running Task B.
Are there any common "gotchas" or issues that I might be missing which would cause this behavior? I deleted the existing precedence constraint, and added back a new one with the same settings, but Task B still will not run.
thanks for any help on this
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Aug 7, 2006
Hello folks,
I have probably a dumb newbie question but I can't find the answer anywhere.
On my Control Flow design pane I have two objects: a SQL task object and a Data flow task object. The first 'points' to the second. From my digging I believed that by indicating with the arrow from 1 to 2 that 1 would execute to finish before 2 was started.
My SQL taks is to truncate a table to receive the new data coming from the data flow task object. Instead 2 executes first and then 1. You can imagine producing an empty table was not my goal for this package.
Can anybody give me a clue?
Thanks....
Jim
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Nov 7, 2007
Hello,
I've recently begun exploring Integration Services and have a question regarding a Control Flow element.
I'm trying to understand precedence constraints. Specificially, the logical AND and logic OR components. If I have two constaints A and B where A is using a logical AND and B is using a logical OR, how are the constraints evaluated? The Evaluation Operation is set to "Expression and Constraint" for both constraints.
If my understanding is correct, path A would be followed if both A AND B are true. Path B would be followed if A OR B is true. Is this correct?
Regards,
Orlanzo
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Apr 29, 2004
I'm having problems with the query below. It works fine until the "NOT IN" part and I'm not sure why. Basically, I'm getting records where their educ_audio field is set to "no". I've messed with the parens to try to force SQL to process the NOT IN part before the other clauses without avail. Can someone shed some light?
TIA
SELECT distinct contacts.fname, contacts.lname, contacts.company, contacts.contact_id, contacts.business_phone, contacts.emailAddress, contacts.dateLastContact FROM journal INNER JOIN contacts ON journal.contact_id = contacts.contact_id INNER JOIN products ON journal.product_code = products.product_code WHERE ( journal.product_code IN ('ABLE') ) OR (( journal.product_code IN ('JOBS') ) AND ( journal.product_status IN ('12','14','15') )) OR (( products.prod_design IN ('audio') ) AND ( products.library_code IN ('hrss') )) AND (journal.journal_id NOT IN (SELECT journal.journal_id FROM journal INNER JOIN contacts ON journal.contact_id = contacts.contact_id INNER JOIN products ON products.product_code = journal.product_code where ( contacts.educ_audio IN ('no') ) )) ORDER BY contacts.lname asc, contacts.fname
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Dec 20, 2007
I have two packages - one works, the other doesn't. Both have two tasks: an Execute SQL Task and a dependent Send Mail Task. I am using a precedence constraint where the evaluation operation is an expression evaluating a variable created by a select count(*) as variable in the query. Both variables are defined as int32, initial value of 0 with a scope for the entire package.
The expression that works tests for an error_counts > 0 condition; the one that doesn't tests for load_counts < 24. The > 0 sends mail when the error_count is greater than 0 but doesn't send mail when it is 0, which is as I intended. The less than 24 package always sends mail even though the variable resultset_singlerow is usually 24. When I look at both properties for the Execute SQL Task steps side by side, they have no differences. When I look at the properties for the constraint, the only difference is in the EvaluatesTrue, which is set to False for the one that works and True for the one that doesn't. Unfortunately, that property is grayed out (not modifiable) and doesn't seem to be an option when I edit via the Precedence Constraint Editor.
I've looked a Books Online & Google with no references to a similar situation. Does anyone have a solution? Is the EvaluatesTrue the problem? And if it is, how can I change the setting? If not, what is the problem?
Thanks in advance for any help.
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May 2, 2006
An application filters records based on names found in them. Forexample, looking through property buyer names, looking for banks andrelocation companies.I have a table of names and patterns:CREATE TABLE #Filters (Pattern varchar(100), IfWildCard int, Categoryint)INSERT #Filters SELECT 'Bank Of America', 0, 1INSERT #Filters SELECT '% Bank %', 1, 2INSERT #Filters SELECT 'Bank %', 1, 2INSERT #Filters SELECT '% Bank', 1, 2INSERT #Filters SELECT 'Credant Reloc%', 1, 3INSERT #Filters SELECT '%Relocation%, 1, 3The filtering matches the table of candidate names against the filters,and returns Category, where the where clause or join is(Candidate = Pattern AND IfWildCard = 0)OR (Candidate LIKE Pattern AND IfWildCard = 1)"Bank of America" matches an exact pattern, and also a wildcardpattern, and the two different matches give different values forCategory. Is there a way to control which match takes precedence, oris necessary to do it multiple times in the desired order, removingthose that hae already matched from consideration?Thanks,Jim Geissman
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Jan 25, 2007
Has anyone seen precedence constraints disappear in a package after closing and opening again? In this case, it's not package-wide. Only constraints inside one Foreach Loop container disappeared. Any idea what causes this to happen?
p.s: Yes, I did Save All. Most of these contraints were saved in the package for more than a week anyway.
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Aug 21, 2007
Hello,
I have a SQL Task the executes the following statement;
SELECT COUNT(SettleDate) AS CountResult
FROM SettleDateCount
I have the SQL Task Editor configured for a Single Row result set. The Result Name is CountResult, and the variable it populates is RowCountRes. RowCountRes is Int32 with EvaluateAsExpression set to False.
I have a boolean variable called RowCountStatus. It evaluates as the following expression;
@[User::RowCountRes] > 1
From the SQL Task, I have two different constraints, both of which evaluate with an expression. One constraint evaluates this way; @[User::RowCountStatus] = True
The other evaluates this way; @[User::RowCountStatus] = False
The idea is that if the count comes back from the sql statement greater than 1 then execution continues down one path, else it goes down the other path. Currently, the result comes back = 1. I expect that the 'False' path will execute, but the 'True' path executes instead.
What am I doing wrong?
Thank you for your help!
cdun2
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Dec 20, 2007
I have two packages - one works, the other doesn't. Both have two tasks: an Execute SQL Task and a dependent Send Mail Task. I am using a precedence constraint where the evaluation operation is an expression evaluating a variable created by a select count(*) as variable in the query. Both variables are defined as int32, initial value of 0 with a scope for the entire package. The expression that works tests for an error_counts > 0 condition; the one that doesn't tests for load_counts < 24. The > 0 sends mail when the error_count is greater than 0 but doesn't send mail when it is 0, which is as I intended. The less than 24 package always sends mail even though the variable resultset_singlerow is usually 24.
When I look at both properties for the Execute SQL Task steps side by side, they have no differences. When I look at the properties for the constraint, the only difference is in the EvaluatesTrue, which is set to False for the one that works and True for the one that doesn't. Unfortunately, that property is greyed out (not modifiable) and doesn't seem to be an option when I edit via the Precedence Constraint Editor.
I've looked a Books Online & Google with no references to a similar situation. Does anyone have a solution? Is the EvaluatesTrue the problem? And if it is, how can I change the setting?
Thanks in advance for any help.
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Feb 14, 2007
I have three sequence containers setup to run in parallel. I have a final step that parses the log file and displays results, and I want to this to occur when all three containers have completed, success or failure. I therefore have a constraint from each container that feeds into my final step, and all three constraint types are set to "completion".
When I run the package and one of the tasks within a container fails (and fails its parent, but not the package) the final step is not executed.
If I take off all the constraints except one, the final step is executed as expected.
I am using checkpointing if that has any impact. Disabling it makes no difference.
Any thoughts/alternatives I might try?
thanks
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May 1, 2008
Hi,
I have 3 data flows connected sequentially on my workflow before processing dimensions and facts which checks data from different databases and if conditions does not meet then writes to log table. So if it writes to log table , I have to quit and finish the workflow.
How can I do that?
thanks,
J
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Aug 29, 2006
Hello,
I have a package that executes 2 sql tasks then another SSIS package. My precedence constraints between sql task 1 and sql task 2, and sql task 2 and the SSIS package check that @ErrorValue == 0.
@ErrorValue is set after each sql task (both of which execute stored procs) with the value of the output parameter for the stored proc. I have run both stored procs on the server and both return 0 in the output parameter.
When I run the package the two sql tasks execute as expected (tasks turn green indicating success) but the package stops at that point and the SSIS package task never executes.
If I remove the second sql task and connect the first sql task to the package task with the @ErrorValue == 0 precendence constraint the package task still does not execute (even though the constraint worked to get the sql task 2 to execute).
The package only runs if I remove the expression in the second precedence constraint (between sql task 2 and the package) thus changing it to simply 'on success'.
Please help!
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Jul 30, 2007
Hi all
I've got a package that checks the length of chars in a flatfile and if it's correct it executes the dataflow task.
How can i write an expression in the precedense constraint editor to skip the dataflow task if there is an error in the script task?
Thank you
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May 3, 2006
Is it possible to use objects in precedence constraints? For example, I have a collection object that may or may not be populated in a script at some point and want to be able to execute different paths depending upon whether the Count property equals zero or not.
I realize I could very easily just create another int variable and populate it accordingly, but I am just curious about this. I couldn't get it to work, but then I am really just starting out here and just not sure if I am doing it wrong.
Thanks!
Brandon
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Mar 5, 2008
I am struggling here with precendece constraints and variables.
I have the following scenario:
Task A
Task B
Task C
@var1!=0
@var1==0
Task A, Task B and TaskC
Task A (Execute SQL Task which assigns a value to a variable say, var1) determines if TaskB will execute i.e.
IF var1 !=0 Execute Task B and then Execute Task C
IF var1== Execute Task C
Is this possible in SSIS?
Problem:
Each time I try to do this, the package never executes Task C. It always either Executes Task A or Task A and Task B.
For example if var1 !=0 it executes Task A and Task B
but if var1 == 0 it executes only Task A.
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Jan 5, 2008
I am confused with Precedence constraint editor regarding Evaluation Operation and Multiple Constraints options. In the Evaluation Operation dropdown list, there are: Expression and Constraint and Expression OR Constraint. Why it still needs LOGICAL AND and LOGICAL OR in the multiple constraints options? Is it clear that Expression and Constraint is "LOGICAL AND" and "Expression OR Constraint" is "LOGICAL OR"?
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Jun 15, 2007
hi all,
i have a package here which updates a DB from a flat file source.now the problem is i may get multiple files.i have used a for each loop to handle this. it takes files based on the files name9(file names has a timestamp in it).but i want to give files in order of its Creation time.
Please help me on this.i have written a script task before the for each loop and i have got the minimum creation date from all the files,i am not able to going forward from here.
does any body has an idea!!
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Jul 17, 2007
I have about 12 sequence containers mapped out to execute separately based on a precedence contraint and an expression. These lie at the same level and order in my sequence. Only one of these will execute based on an expression. After any of these executes, I have a consecutive sequence container that I'm attempting to execute. I've set the precedence contraint from all twelve of the prior sequence containers to this single sequence container that I would like to run after any of the 12. My problem is that the package will only allow one of these twelve sequence containers to become a precedence of this second single sequence container at a time. The package will let me graphically attach the precedence constraint from all 12 to this single sequence container, but when the package runs, it fails to follow through to this single sequence container. I'm trying to figure out why this is the case and how I can get what I would like to work -- work. Thanks.
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Jan 3, 2008
I have three control flow tasks that are executing in consecutive order. Tasks 1 and 3 will always execute, but sometimes (based on an expression) task 2 will not. I would like to use precedence constraints in such a way that task 3 will execute regardless of whether task 2 executes, but in the event task 2 does execute, task 3 will only execute AFTER task 2 completes. Is there a way to accomplish this without setting the disabled property of task 2 at runtime?
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Jun 20, 2007
Is it possible in a precedence constraint to have multiple expressions evaluated? IE
Operation set to Expression and expression to evaluate is: @File = x or @File = y
Thanks
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Dec 20, 2007
I have created a task that uses a ForEachFile Loop. Within that loop I load 5 files. Once those 5 files have loaded successfully I want to run a stored procedure. I placed this stored procedure into a script task. The script task has 5 precedence constraints,. They are a success on the load of the files. When I run the task, the 5 files load, but the script task will not start. I have gone so far as to check each load individually to see if it would start the script task, which they do. It's only when I add more than 1 precedence constraint that the script task will not run. The precedence constraints are set to AND, so they all are required. They all succeed. What am I doing wrong?
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