I have 1 .csv file that I import. Because of the layout of the file I need to import it again to get a certain value that needs to be used for the next Data Flow task that will use that value for every row.
Below is an example of the file:
I need STATEMENT DATE for all records.
This is how the package looks like:
Inside Get Statement Date task I have the following Data Flow:
I don't really want to export the column I just want it to go into a variable that I can use in the next task And I am not sure were this should be done.
I am still learning how SSIS works.
Any help would be much appreciated.
Use a script component as Destination and assign that column to your variable.
Keep in mind the variable Datatype should be compatible.
Declare a variable in class ScriptMain to store your value:
public DateTime t;
On Input0_ProcessInputRow(Input0Buffer Row):
t = Row.StatementDate;
On PostExecute:
Variables.teste = t;
It will assign it the number of rows you actually have.(it's not a problem since you are only retrieving one row I guess). Only the last row will actually be saved to your variable.
Use RecordSet Destination. This can be used to store temporary results which will be stored in a variable of type object. You can use this along with Foreach loop to process each record. you can refer this link for more info.
RecordSet Destination
Related
I'd like to define start_date and end_date parameters in my SSIS package, and have a foreach container that runs for each date in between these 2 (inclusive), which executes a SQL query taking in the current date value (ie starting at start_date) and using it as a parameter for the query.
I'm quite new to SSIS programming and I cannot find information on how to do this.
You can simply add a for loop container and use these variables as mentioned in the image below:
Where #[User:Loop], #[User:MinDate], #[User::MaxDate] are of type System.DateTime
image reference
How do I loop through date values stored as numbers within For Loop container?
Passing parameters to Execute SQL Task
You can refer to the following posts for more details:
Passing Variables to and from an SSIS task
How to pass variable as a parameter in Execute SQL Task SSIS?
A For Loop would be the better option to do this. Assuming that the start and end dates as supplied as parameters to the package as indicated in your question, be aware that parameters cannot be updated in an SSIS package however variables can be. This, as well as an example of the process outlined in your question, is further detailed below.
Create an SSIS datetime variable. As mentioned earlier, this will be used to store in initial value of the start date parameter.
Next add a For Loop on the Control Flow. In the screenshot below, the variable #[User::vStartDate] is set to the same value as the package parameter #[$Package::pStartDate] in the InitExpression on the For Loop. Iterations of the loop continue while the start date variable is less than/equal to the end date parameter, which is specified in the EvalExpression field.
After the Execute SQL Task (or however the SQL query is executed) add a Script Task. This will increment the value of the start date variable, so make sure this is the last task in the loop. An example C# script is below, which simply sets the value of the start date SSIS variable to a C# variable, increments the C# variable by one day, then writes that value back to the SSIS variable. Make sure to add the SSIS start date variable in the ReadWriteVariables field on the Script Task. This will go in the Main method of the script as follows. Although there’s just an increment of the date and update of the variable done in the Script Task, having this in place will allow for easier sustainability in the long term in case more logic needs to be added to this as C# provides much more functionality.
Script Task:
public void Main()
{
//get value in current iteration of loop
DateTime currentIterationValue = Convert.ToDateTime(Dts.Variables["User::vStartDate"].Value);
//increment by one day
currentIterationValue = currentIterationValue.AddDays(1);
//update SSIS variable
Dts.Variables["User::vStartDate"].Value = currentIterationValue;
Dts.TaskResult = (int)ScriptResults.Success;
}
I used an Execute SQL Task to store the dates (results) as a Result Set in a user defined variable. Then, inside the foreach loop container, I used the foreach ADO Enumerator on the user defined variable which has the set of dates. Using the variable mapping in the foreach loop container, you can map the start_date and end_dates from the user defined variable and pass it to other variables.
For example:
I have a SELECT statement which selects 2 rows with columns start_date and end_date. This will be stored as a result set in a variable called "main_dates". The foreach ADO Enumerator will enumerate on this "main_dates" variable (for each row in main_dates run the for loop). Then in the Variable Mapping section, you can create 2 new variables called u_start_date and u_end_date and map the columns 0 and 1 to these variables.
Inside the foreach loop whenever you execute a stored procedure, you can pass the u_start_date and u_end_date variables as parameters.
In my SSIS package, I have a Script Component that creates a +1 new customer ID when the package runs.
I want to assign the numerical value of the ID to a variable. The variable will be used in a File System Task to create a directory with the Customer ID as the folder name.
Example - C:\Customer Orders\<CO_ID>
I have created a derived column (sequence) transformation in the data flow named (CO_ID). However, I am stuck on the proper syntax for the variable expression.
Any advice is appreciated.
Without the error message and more details, it is difficult to say what's wrong. But I think you're trying to convert a number to a string and then concatenate it to another string (the path). If that's the case, your derived column expression should be something like:
"c:\Customer Orders\" + (DT_STR, 10,1252) CO_ID
If the backslashes give you a problem (can't remember if they need to be escaped), then try doubling them up:
"c:\\Customer Orders\\" + (DT_STR, 10,1252) CO_ID
Derived column Transformation is used inside a Dataflow task, and Execute System Task is on the Control Flow level, so any variable update is not visible to the Control Flow level until the Dataflow Task execution is done. So it will only create a directory for the last CO_ID.
If you need to create a Directory for each customer, and assuming that you are creating ID inside the script Component. Just create the directory from it using the following code (Vb.Net)
If Not Io.Directory.Exists("c:\Customer Orders\" & COID.ToString()) Then
IO.Directory.CreateDirectory(c:\Customer Orders\" & COID.ToString())
End If
Else, if you only need to create columns and to loop over them later, i think that you only need to Cast the CO_ID column to DT_WSTR:
"C:\\Customer Orders\\" + (DT_WSTR, 50) [CO_ID]
I have package variable (TableName), its value is set by for each loop container.
For instance TableName = sales set by for each loop after looping through informationschema.tables then I want to use TableName's value in dataflow for this I am using script component.
When I use script component to read TableName's value in script-file I cannot see variable any idea why??
I am using script component as source and TableName is in readonlyvariables.
Please help as I am new to SSIS.
On the Variable Mappings page of the Foreach Loop Editor, assign variables to each item of data that is returned by a single enumerated item. For example, a Foreach File enumerator returns only a file name at Index 0 and therefore requires only one variable mapping, whereas an enumerator that returns several columns of data in each row requires you to map a different variable to each column that you want to use in the Script task. +
After you have mapped enumerated items to variables, then you must add the mapped variables to the ReadOnlyVariables property on the Script page of the Script Task Editor to make them available to your script
For more details pls chk the below link
https://learn.microsoft.com/en-us/sql/integration-services/extending-packages-scripting/task/using-variables-in-the-script-task
https://social.technet.microsoft.com/wiki/contents/articles/22194.use-ssis-variables-and-parameters-in-a-script-task.aspx
Please use the following Microsoft Documentation link - it describes differences between Script Task and Script Component, and gives small code samples, specifically on using Variables.
as per this I need to use this.variables.myvariable
Thanks everyone.
I'm doing an Excel loop through fifty or more Excel files. The loop goes through each Excel file, grabs all the data and inputs it into the database without error. This is the typical process of setting delay validation to true, and making sure that the expression for the Excel Connection is a string variable called EFile that is set to nothing (in the loop).
What is not working: trying to input the name of the Excel file into the database.
What's been tried (edit; SO changed my 2 to 1 - don't know why):
Add a derived column between the Excel file and database input, and add a column using the EFile expression (so under Expression in the Derived Column it would be #[User::EFile]). and add the empty. However, this inputs nothing a blank (nothing).
One suggestion was to add ANOTHER string variable and set its properties EvaluateAsExpression to True and set the Expression to the EFile variable (#[User::EFile]). The funny thing is that this does the same thing - inputs a blank into the database.
Numerous people on blogs claim they can do this, yet I haven't seen one actually address this (I have a blog and I will definitely be showing people how to do this when I get an answer because, so far, these others have fallen short). How do I grab an Excel file's name and input it in a database during a loop?
Added: Forgot to add, no scripts; the claim is that it can be done without them, so I want to see the solution without them.
Note: I already have the ability to import the data from the Excel files - that's easy (see my GitHub account, as I have two different projects for importing all sorts of txt, csv, xls, xlsx data). I am trying to also get the actual name of the file being imported also into the database. So, if there are fifty Excel files, along with the data in each file, the database will have the fifty file names alongside that data (so if each file has 1000 rows of data, each 1000 rows would also have the name of the file they came from next to them as an additional column). This point seems to cause a lot of confusion, as people assume I'm having trouble importing data in files - NOPE, see my GitHub; again that's easy. It's the FILENAME that needs to also be imported.
Test package: https://github.com/tmmtsmith/SSISLoopWithFileName
Solution: #jaimet pointed out that the Derived Column needed to be the #[User::CurrentFile] (see the test package). When I first ran the package, I still got a blank value in my database. But when we originally set up the connection, we do point it to an actual file (I call this "fooling the package"), then change the expression on the connecting later to the #[User::CurrentFile], which is blank. The Derived Column, using the variable #[User::CurrentFile], showed a string of 0. So, I removed the Derived Column, put the full file path and name in the variable, then added the variable to the Derived Column (which made it think the string was 91 characters long), then went back and set the variable to nothing (English teacher would hate the THENs about right now). When I ran the package, it inputted the full file path. Maybe, like the connection, it needs to initially think that a file exists in order for it to input the full amount of characters?
Appreciate all the help.
The issue is because of blank value in the variable #[User::FileNameInput] and this caused the SSIS package to assume that the value of this variable will always be of zero length in the Derived Column transformation.
Change the expression on the Derived column transformation from #[User::FileNameInput] to (DT_STR, 2000, 1252)#[User::FileNameInput].
Type casting the derived column to 2000 sets the column length to that maximum value. The value 1252 represents the code page. I assumed that you are using ANSI code page. I took the value 2000 from your table definition because the FilePath column had variable VARCHAR(2000). If the column data type had been NVARCHAR(2000), then the expression would be (DT_WSTR, 2000)#[User::FileNameInput]
Tim,
You're using the wrong variable in your Derived Column component. You are storing the filename in #[User::CurrentFile] but the variable that you're using in your Derived Column component is #[User::FileNameInput]
Change your Derived Column component to use #[User::CurrentFile] and you'll be good.
Hope that helps.
JT
If you are using a ForEach loop to process the files in a folder then I have have used the technique described in SSIS Junkie's blog to get the filename in to an SSIS variable: SSIS: Enumerating files in a Foreach loop
You can use the variable later in your flow to write it to the database.
TO all intents and purposes your method #1 should work. That's exactly how I would attempt to do it. I am baffled as to why it is not working. Could you perhaps share your package?
Tony, thanks very much for the link. Much appreciated.
Regards
Jamie
I'm learning SSIS and this seems like an easy task but I'm stuck.
I have a CSV file Orders.csv with this data:
ProductId,Quantity,CustomerId
1,1,104
2,1,105
3,2,106
I also have a stored procedure ssis_createorder that takes as input parameters:
#productid int
#quantity int
#customerid int
What I want to do is create an SSIS package that takes the .csv file as input and calls ssis_createorder three times for each row in the .csv file (the first row contains column names).
Here is what I have done so far.
I have created an SSIS package (Visual Studio 2005 & SQL Server 2005).
In Control Flow I have a Data Flow Task.
The Data Flow has a Flat File source of my .csv file. All of of the columns are mapped.
I have created a variable named orders of type Object. I also have variables CustomerId, ProductId, & Quantity of type int32.
Next I have a Recordset Destination that is assigning the contents of the .csv file into the varialbe orders. I'm not sure about how to use this tool. I'm setting the VariableName (under Customer Properties) to User::orders. I think that now orders holds an ADO record set made up of the contents from the original .csv file.
Next I'm adding a ForEach Loop Container on the Control Flow tag and linking it to the Data Flow Task.
Inside of the ForEach Loop Container I'm setting the Enumerator to "ForEach ADO Enumerator". I'm setting "ADO object source variable" to User::orders". For Enumeration mode I'm selecting "Rows in the first table".
In the Variable Mapping tab I have User::ProductId index 0, User::Quantity index 1, User::CustomerId index 2. I'm not sure if this is correct.
Next I have a Script Task inside of the ForEach Loop Container.
I have ReadOnlyVariables set to ProductId.
In the Main method this is what I'm doing:
Dim sProductId As String = Dts.Variables("ProductId").Value.ToString
MsgBox("sProductId")
When I run the package my ForEach Loop Container turns Bright Red and I get the following error messages
Error: 0xC001F009 at MasterTest: The type of the value being assigned to variable "User::ProductId" differs from the current variable type. Variables may not change type during execution. Variable types are strict, except for variables of type Object.
Error: 0xC001C012 at Foreach Loop Container: ForEach Variable Mapping number 1 to variable "User::ProductId" cannot be applied.
Error: 0xC001F009 at MasterTest: The type of the value being assigned to variable "User::Quantity" differs from the current variable type. Variables may not change type during execution. Variable types are strict, except for variables of type Object.
Error: 0xC001C012 at Foreach Loop Container: ForEach Variable Mapping number 2 to variable "User::Quantity" cannot be applied.
Error: 0xC001F009 at MasterTest: The type of the value being assigned to variable "User::CustomerId" differs from the current variable type. Variables may not change type during execution. Variable types are strict, except for variables of type Object.
Error: 0xC001C012 at Foreach Loop Container: ForEach Variable Mapping number 3 to variable "User::CustomerId" cannot be applied.
Warning: 0x80019002 at MasterTest: SSIS Warning Code DTS_W_MAXIMUMERRORCOUNTREACHED. The Execution method succeeded, but the number of errors raised (12) reached the maximum allowed (1); resulting in failure. This occurs when the number of errors reaches the number specified in MaximumErrorCount. Change the MaximumErrorCount or fix the errors.
SSIS package "Package.dtsx" finished: Failure.
Dts.TaskResult = Dts.Results.Success
Any help would be appreciated
One of my coworkers just give me the answer.
You don't need the the ForEach Loop Container or the RecordSet Container.
All you need is the Flat File Source and an OLE DB Command. Connect to your database and inside the OLE DB Command select the appropriate connection.
In the Component Properties enter the following SQLCommand:
exec ssis_createorder ?, ?, ?
The "?" are place holders for the parameters.
Next under the Column Mappings tab map the .csv file columns to the stored procedure parameters.
You are finished go ahead and run the package.
Thanks Gary if you were on StackOverFlow I would give you an upvote and accept your answer.
If I understand correctly, what you want to do is execute a stored procedure 3 times for each row in the data source.
What if you just create a data flow with a flat file data source and pipe the data through 3 execute sql command tasks? Just map the columns in the data to the input params of your stored procedure.
Maybe I'm not seeing it correctly in your question and I'm thinking too simple, but in my experience you need to avoid using the foreach task in SSIS as much as possible.
I suspect that you need to look at your Data Flow task. It's likely that the values from the source CSV file are being interpreted as string values. You will probably need a Derived Column component or a Data Conversion component to convert your input values to the desired data type.
And, I think #StephaneT's solution would be good for executing the SP.
I'm not sure if this answers your question. But I was looking to do this and I achieved it using the BULK INSERT command. I created a staging table with all of the columns in the csv file, and instead of a stored procedure I used a INSTEAD OF INSERT trigger to handle the logic of inserting it into many tables.