Is My Object Variable Empty?

Sep 20, 2007

Hallo!

I got an object variable. I used it in a €śRecordset destination€?.
How can I proof if it is empty?

Isnull(@[Benutzer::MyVar]) does not work!

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Checking That An Object Is Not Empty

Feb 6, 2006

Hi,

Does anyone know the correct syntax to check the contents of an object variable. I want to do this as part of a constraint,

TIA

R

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Feb 15, 2006

I keep getting this debug error, see my code below, I have gone thru it time and time agian and do not see where the problem is.  I have checked and have no  NULL values that I'm trying to write back.
~~~~~~~~~~~
Error:
System.NullReferenceException was unhandled by user code  Message="Object variable or With block variable not set."  Source="Microsoft.VisualBasic"
~~~~~~~~~~~~
My Code
Dim DBConn As SqlConnection
Dim DBAdd As New SqlCommand
Dim strConnect As String = ConfigurationManager.ConnectionStrings("ProtoCostConnectionString").ConnectionString
DBConn = New SqlConnection(strConnect)
DBAdd.CommandText = "INSERT INTO D12_MIS (" _
& "CSJ, EST_DATE, RECORD_LOCK_FLAG, EST_CREATE_BY_NAME, EST_REVIEW_BY_NAME, m2_1, m2_2_date, m2_3_date, m2_4_date, m2_5, m3_1a, m3_1b, m3_2a, m3_2b, m3_3a, m3_3b" _
& ") values (" _
& "'" & Replace(vbCSJ.Text, "'", "''") _
& "', " _
& "'" & Replace(tmp1Date, "'", "''") _
& "', " _
& "'" & Replace(tmpRecordLock, "'", "''") _
& "', " _
& "'" & Replace(CheckedCreator, "'", "''") _
& "', " _
& "'" & Replace(CheckedReviewer, "'", "''") _
& "', " _
& "'" & Replace(vb2_1, "'", "''") _
& "', " _
& "'" & Replace(tmp2Date, "'", "''") _
& "', " _
& "'" & Replace(tmp3Date, "'", "''") _
& "', " _
& "'" & Replace(tmp4Date, "'", "''") _
& "', " _
& "'" & Replace(vb2_5, "'", "''") _
& "', " _
& "'" & Replace(vb3_1a, "'", "''") _
& "', " _
& "'" & Replace(vb3_1b, "'", "''") _
& "', " _
& "'" & Replace(vb3_2a, "'", "''") _
& "', " _
& "'" & Replace(vb3_2b, "'", "''") _
& "', " _
& "'" & Replace(vb3_3a, "'", "''") _
& "', " _
& "'" & Replace(vb3_3b, "'", "''") _
& "')"
DBAdd.Connection = DBConn
DBAdd.Connection.Open()
DBAdd.ExecuteNonQuery()
DBAdd.Connection.Close()

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Feb 14, 2008

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Hello.

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Jul 20, 2005

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May 19, 2008



Hi,

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Currently I'm getting an error Argument option not valid.
Thanks in advance

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Sep 9, 2014

declare @user varchar(30) = ''
if(@user is not null or @user <> '')
BEGIN
print 'I am not empty'
END
ELSE
BEGIN
print 'I am empty'
ENd

The output should be 'i am empty' but when i execute this i am getting ' i am not empty'. even i did browse through but i don't find the difference in my logic.

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I am using SSDT to deploy my database project. This project has a post deployment script and i am creating a new user in this post deployment script. I have used sqlcmd variable to capture the username. I am doing a null/empty check for this variable and my code looks like below.

IF (([$(UserName)] IS NOT NULL) OR ([$(UserName)] <> ''))
BEGIN
CREATE USER [$(UserName)] WITHOUT LOGIN WITH DEFAULT_SCHEMA = dbo;
GRANT CONNECT TO [$(UserName)];
END

When i execute this, I am getting below error.

Could not deploy package.

Error SQL72014: .Net SqlClient Data Provider: Msg 207, Level 16, State 1,Line 15 Invalid column name 'User Name'.

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Jul 9, 2015

I am facing a strange problem in executing stored procedure. Basically my sproc will take a values from Java application and create a Insert statement. see stored procedure below.Just to give some more background- I am re writing the procedure which was written in oracle already.

Problem I am facing now is with the statement below . When I execute the procedure for first time it works fine however when I execute for second time onwards it is setting to empty. Not sure what is the problem with my declaration and setting up with values. For reference I have pasted my complete stored procedure code below.

select @L_STMT= 'INSERT INTO '+ @l_table_name + '(' + LTRIM(RTRIM((substring (@L_INS_STMT,2,len(@L_INS_STMT))))) + ') VALUES (' + LTRIM(RTRIM((substring (@L_INS_STMT1,2,len(@L_INS_STMT1))))) +')';
ALTER PROCEDURE [dbo].[PKG_OBJ_API$CREATE_OBJ]
(
@P_TYPE VARCHAR(4000),
@P_SCOPE VARCHAR(4000),
@Arrlist varchar(max),

[code]....

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Nov 20, 2006

Hi there!

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So i set the Enumerater as "Foreach-ADO-Enumerator", the Ado-source-variable is my objectvariable (what contains the recordset), and the enumerator-configuration i set to "rows in all tables" ("rows in the first table" works with equal result).

The variable-mapping looks like that:

Mypackvar1        - Index 0
Mypackvar2        - Index 1
Mypackvar3        - Index 2
Mypackvar4        - Index 3

Seems to be really simple, but always i get into my first parameter the value "0" - what is not in my record set (i am relatively sure).

Am i on the right way? Is it great bullshit what i am doing?

Thanks for any suggestion,

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I need to do a CAST(@variable_name as datetime)
this won't work because @variable_name has the following format

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like how do i specify a style for it.

please help..


James : (

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Good Day guys, sorry i'm just new in SQL Server.

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Usually we make like this:

"Select * from Table1"

I want like this:

"Select * from @Table1"

I want to pass Table1 to a variable "@Table1" which the variable
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Thanks,

Ero-Sennin26

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Jan 25, 2006

Hi



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set in an Execute SQL task which is querying an Oracle database.
Although I know the Oracle table columns are Numeric, this was the only
SSIS type that worked).



My problem is that I want to use these variables in expressions, but
can't - I get the error "The data type of variable "User::varObjectVar"
is not supported in an expression".



The only workaround I can think of is to use a script to assign
the numeric values (integers, in fact) that these variables hold to
other variables of type Int32.



Is that my only option, or am I missing something?



thanks

- Jerzy

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Hi,

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The ArrayList gets initialized in the constructor of the Task. Values to add in execute(). But the process never gets to the execute()-Method, due to my check in validate() for null Values. So the List is initialized but empty.

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Thanks a lot

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Nov 17, 2006

Hi!

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1. Use a script task what returns the whole result set from the object variable? How?

2. Is there any other possibility to use the results of a stored procedure in the data flow?

All ideas are urgently welcome...

Torsten

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Thanks,

*** Campbell

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Aug 17, 2015

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Dec 7, 2007



Hello,
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Perhaps I'm on the wrong track but I guess I need to access the ADO Object Source variable set in the ForEach Loop Container? Through my own experimentation, I know that accessing the VariableDispenser collection only returns whatever default values that happen to be assigned to the variables in the SSIS GUI (not the values assigned during each iteration of the ForEach Loop).

Thanks,
Clive

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May 8, 2008

Hi,

I have a script component that contains a script similar to that shown below;


Public Sub Main()

Dim sqlConn As New SqlConnection("Server=myserver;Database=mydb;Trusted_Connection=True;")

Dim SQLStmt As String

SQLStmt = "select top 10 CountID from mytable"


Dim sqlComm As New SqlCommand(SQLStmt, sqlConn)


sqlConn.Open()



Dim r As SqlDataReader = sqlComm.ExecuteReader()
While r.Read()


Dim MyValue As Integer

If r("CountID") IsNot DBNull.Value Then

MyValue = CInt(r("CountID "))



' HERE I WANT TO WRITE MyValue TO A PACKAGE VARIABLE AS A ROW

End If


End While

r.Close()
sqlConn.Close()

Dts.TaskResult = Dts.Results.Success

End Sub


Once i have a value assigned to MyValue, I want to write this as a row to a variable (DATATYPE Object Value VALUE System.Object) in the package which will be an ADO Recordset Destination that i can then loop through later.

Many thanks for any help

Phil Harbour

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Feb 23, 2007

Hey Guys,

Im pretty new to Scripting in SSIS, but i have worked a fair bit out already, although i am stuck with the following problem.. If anyone can help out that would be great!!

Ok, i have a package that loops through records in a table, and extracts the detailed lines in a For Each loop. and stores them in a variable called DetailRecordSet with an data type of object.

I have a built a script task so that i can send out an email confirmation for each order, and i want to list the details in a HTML Table in the body of the message ( I have read that the standard send mail task wont support this, but found an example of using .NET code to generate the email message which will support it) .


What i want to know is how do i reference the columns in the Object variable so i can extract each line and add it into my string that i am creating with HTML codes.. I



e:( str = "<TABLE> <TR>" + Cstr(Variable for 1st column in recordset) + " </TR>"

if any can help my, that would be most appriciated.. Ive tried all different things that ive found on the net, but nothing is working.

Thanks in Advance

Scotty

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Has anyone run across this before? Any thoughts would be appreciated.

Thanks





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Jul 30, 2007

Hello,


I have a SSIS package that has a SQL task which gets a result set and stores it in an SSIS object variable. The package then iterates through that result set in a foreach Loop Container. In the loop container I have a script task and a Send Mail Task. The script task sets the contents of the email message (through an SSIS String variable).
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Result Set from SQL Query (16 columns, 674 rows, 145 distinct Employeecodes)
Employee Code EmailAddress Other columns
1 email1 set1
1 email1 set2
2 email2 set3
2 emial2 set4
2 email2 set5
etc etc etc


The first iteration should be sent to email1 where the body includes set1 and set2, the second iteration sends to email2 where the body includes set3, set4, and set5 and so forth.


The SSIS ForEachLoop Container is looping through the entire Result Set and passing into the .NET Script task the EmployeeCode (readonly) and the entire Result Set (readwrite) and setting the value of EmailMessage. So I create the value of EmailMessage based on the EmployeeCode and then use the value of Email1 and EmailMessage in the SendMail Task. I was trying to delete the rows I processed so I don€™t process them the next time the ForEachLoop Executes (otherwise I'll get duplicate emails).


Or if there's a different way to do this, I'm open to that as well.


See below for the code I'm using (colEmployeeCode is a ReadOnlyVariable and rsRecipients and EmailMessage are ReadWriteVariables in the Script Task).


Public Sub Main()
Dim Header As String
Dim Body As String
Dim Footer As String
Header = "blah"

Footer = "blah"

Try
Dim olead As New Data.OleDb.OleDbDataAdapter
Dim dt As New Data.DataTable
olead.Fill(dt, Dts.Variables("rsRecipients").Value)

For Each row As Data.DataRow In dt.Rows
If UCase(Trim(row("EmployeeCode").ToString())) = UCase(Trim(Dts.Variables("colEmployeeCode").Value.ToString())) Then
Body = Body + "Label: " + Trim(row("colum").ToString()) + System.Environment.NewLine
row.Delete()
End If
Next
Dts.Variables("rsRecipients").Value = dt
Dts.Variables("EmailMessage").Value = Header + Body + Footer
Dts.TaskResult = Dts.Results.Success
Catch ex As Exception
Dts.TaskResult = Dts.Results.Failure
End Try
End Sub


Thank you very much,

Aaron

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