Mutator 'FirstName' On '@test' Cannot Be Called On A Null Value.
Apr 11, 2007
I'm having trouble figuring out how to use a UDT class. I'm simply trying to test out the class in a query window in the management studio. Here's the simple snippet:
declare @test TestObject;
set @test.FirstName = 'bob'
select @test.FirstName
Obviously my object has a string property called FirstName. When I execute this simple query I get the following error:
Mutator 'FirstName' on '@test' cannot be called on a null value.
I run a stored procedure for which I have a return variable. The stored procedure returns the ID of a row in a table if it exists:
m_sqlCmd.ExecuteScalar();
The m_sqlCmd has been fed an SQLParameter with direction set to output. When the stored proc returns, I want to test it. Now when there IS a row it returns the ID ok. When the row doesn't exist, in my watch I have:
m_sqlParam.SqlValue with value {Null}
I can't seem to work out how to test this value out. I've tried several things but none seem to work.
This line compiles ok, but the following runs into the IF statement as if the SqlValue is null??
if (m_sqlParam.SqlValue != null).... {
// I'm here!! I thought the watch says this is null??? }
Sorry if this is obvious, but I can't work this one out!!
I have a stored procedure which runs a query, then turns it on its side (so that the rows are column headers).What I need to do now is test if any of the values in a row from this stored procedure are null.Any suggestions on how to get started? Is there some function that will tell me if any value in the row is null?
I have an employee directory application that displays employees in a gridview. When a record is selected, a new page opens and displays all info about the employee, including their photo. I have the code working that displays the photos, however, when no photo is present an exception is thrown that "Unable to cast object of type System.DbNull to System.Byte[]". I'm not sure how to test for no photo before trying to write it out. My code is as follows (with no error trapping): Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load, Me.Load Dim temp As String Dim connPhoto As System.Data.SqlClient.SqlConnection Dim connstring As Stringconnstring = Web.Configuration.WebConfigurationManager.ConnectionStrings("connPhoto").ConnectionString connPhoto = New System.Data.SqlClient.SqlConnection(connstring)temp = Request.QueryString("id") Dim SqlSelectCommand2 As System.Data.SqlClient.SqlCommand Dim sqlstring As String sqlstring = "Select * from dbo.PhotoDir WHERE (CMS_ID = " + temp + ")"SqlSelectCommand2 = New System.Data.SqlClient.SqlCommand(sqlstring, connPhoto) Try connPhoto.Open()Dim myDataReader As System.Data.SqlClient.SqlDataReader myDataReader = SqlSelectCommand2.ExecuteReader Do While (myDataReader.Read()) Response.BinaryWrite(myDataReader.Item("ImportedPhoto")) Loop connPhoto.Close()Catch SQLexec As System.Data.SqlClient.SqlException Response.Write("Read Failed : " & SQLexec.ToString()) End TryEnd Sub End Class
Is there a way to check for System.BDNull when I use the column name instead of column index? The column Photographer (in the excample below) sometimes contains the value null, and then it throws an error. Or do I have to go back to counting columns (column index of the returned data) again? try { connection.Open(); using (SqlDataReader reader = command.ExecuteReader()) { if (reader.Read()) { albumItem = new Album((int)reader["Id"]); if (reader["Photographer"] != null) albumItem.Photographer = (string)reader["Photographer"]; albumItem.Public = (bool)reader["IsPublic"]; } } } Regards, Sigurd
Hello, I need some help being pointed in the right direction. I have a field in my Customer table called Name that is "LastName,FirstName". I need to be able to return a result set with "FirstName,LastName". Any ideas?
I'm sure you all have seen situations where a field has a combined namein the format of "Lastname, Firstname Middlename" and I've seenexamples of parsing that type of field. But what happens when the datawithin this type of field is inconsistent? Here are some examplesApple, John A.Berry John B.CherryJohn CDonald John DHow does one parse the data when the data isn't consistent?
HI,i got a problem while using StrConv function in sql server.My requirement is:-suppose in a name field i have "jhon smith" Now i want to run a sqlwhich will give me the result like "Jhon Smith"--which means uppercase first.Now i am running a query like below which is giving me "Jhon smith"but i want "Jhon Smith".SELECT [CustomerID] ,upper(left(firstname,1)) + lower(right(firstname,len(firstname)-1)) AS [FirstName_] from my_table;But the above query is not giving me the right result. Pleasesuggest...ThanksHoque
We are setting up a test lab environment with 100 machines. We want one master testing db that gets replicated to each to run scripted application tests nightly.
My goal is to minimize the amount of work to move this thing to each of the 100 test machines. I am wondering if we need to even have the sql local and invest in a monster db server with 100 copies of the db we restore and each test machine point to their own db on that server, or if I should use db mirroring or something to get the master test db to each of those machines instead.
Now that we have a good programming model in SSIS - the question is whether to write automated unit tests for your packages, and would it generally be a good idea for packages?
Also - if yes to write tests - then where to find more informations regarding How to accomplish that?
hi every one, i need to test SSIS pacakge which will import data from different database where record count is around 5 millions. iam planning to test it through c# code as well as manually also. SSIS source : consist of 7 tables SSIS destination :consist of 7 tables Using c# code iam trying to run ssis package through batch file. i am putting expected rowcount, column count in an excel file and comparing same with destination tables by writing query implementing ADO.Net concept. am i going right way ,can any one suggest best and productive way to test the ssis package . what are the other things i need to test it. do any one can add test cases to it.
S.No
Test Case
1
Verify all the tables have been imported.
2
Verify all the rows in each table have been imported.
3
Verify all the columns specified in source query for each table have been imported
4
Verify all the data has been received without any truncation for each column.
5
Verify the schema at source and destination
6
Verify the time taken /speed for data transfer
7
Fields truncated due to difference in length of the field at destination. Regards Arif shareef
Hey. I need to substitute a value from a table if the input var is null. This is fine if the value coming from table is not null. But, it the table value is also null, it doesn't work. The problem I'm getting is in the isnull line which is in Dark green color because @inFileVersion is set to null explicitly and when the isnull function evaluates, value returned from DR.FileVersion is also null which is correct. I want the null=null to return true which is why i set ansi_nulls off. But it doesn't return anything. And the select statement should return something but in my case it returns null. If I comment the isnull statements in the where clause, everything works fine. Please tell me what am I doing wrong. Is it possible to do this without setting the ansi_nulls to off??? Thank you
set ansi_nulls off
go
declare
@inFileName VARCHAR (100),
@inFileSize INT,
@Id int,
@inlanguageid INT,
@inFileVersion VARCHAR (100),
@ExeState int
set @inFileName = 'A0006337.EXE'
set @inFileSize = 28796
set @Id= 1
set @inlanguageid =null
set @inFileVersion =NULL
set @ExeState =0
select Dr.StateID from table1 dR
where
DR.[FileName] = @inFileName
AND DR.FileSize =@inFileSize
AND DR.FileVersion = isnull(@inFileVersion,DR.FileVersion)
I need to restore test DB from production backup but once it is restored I would need all the permissions of sql logins and windows AD account intact in test Db as it was before.
How can I execute or access a web page from a DTS package?
Both SQL server AND website are hosted on the same server (a Dual 2.4Gz Xeon with 2Gb RAM, RAID 5 etc)
I have 2 tables in SQL server 2000 that hold orders. These need to be posted into another table at a predefined time (ie: 4:30pm) and at the same time, access a remote address (a web service) and post certain elements of the order back.
Basically, can anyone help me out on how to execute a web page from a DTS.
I do NOT want to access a DTS from a webpage, which is all I'm finding at the moment.
Hello, Question is, when I try to create relationships in SQL 7 without using the wizard..upon adding the tables I get an errror message that says "Coinitialization has not been called". What does this mean?
I'm stumped on what to cal this, there might even be a method or pattern named for what i am trying to accomplish...
In the database, a number field is included on each table
When the DAL reads the record from the database, it is passed to the client - work is possibly done to the record and is sent back to the DAL for update.
A query is done against the table to retrieve the record again, the numbers are compared - if they don't match, it is assumed the record been modified by another user/thread/activity. An error is returned to the client stating the data has been changed.
if the numbers match, the record is updated with the number field being incremented by one.
what is this methodology called (beside crap :-) )
Hello, perhaps you guys have heard this before in the past, but here iswhat I'm looking for.I have a SQL 2000 table with Social security numbers. We need tocreate a Member ID using the Member's real SSN but since we are notallowed to use the exact SSN, we need to add 1 to each number in theSSN. That way, the new SSN would be the new Member ID.For example:if the real SSN is: 340-53-7098 the MemberID would be 451-64-8109.Sounds simply enough, but I can't seem to get it straight.I need this number to be created using a query, as this query is areport's record source.Again, any help would be appreciated it.
This seems like a basic question but I have not been able to find the answer in the help files or by searching this forum.
Is a trigger called for each row updated or is it called once for all rows updated?
for example if I have:
Code Snippet CREATE TRIGGER mytrigger
ON mytable AFTER UPDATE AS BEGIN
EXEC e-mail-me inserted, N'mytrigger', getdate() END
and I do this
Code Snippet UPDATE mytable SET mycolumn = N'whatever' WHERE ID > 5 AND ID <= 10
Assuming there is a record for each nteger value of ID, than will mytrigger run 5 times (once for each row updated) or one time (with inserted containing all 5 rows)?
When a column is evaluated against an UDF in a SELECT ... or WHERE ... It makes sense that the UDF is called for every row of the SELECT. But is it still true if the UDF is called in a subquery as below?
Code Snippet
SELECT LineID, AnyText FROM dbo.UdfTest WHERE LineID IN (SELECT LineID FROM dbo.F_Bogus()) I've made a test and the SQL Profiler Trace shows that the UDF is called only once.
Can anyone confirm if my test is valid and most importantly that the UDF is called only once? FYI, I never use sub queries. This is to clarify a technical detail for our performance investigation.
Thank in advance for any help.
Here is the code to setup the test: USE NorthWind GO
CREATE TABLE dbo.UdfTest ( LineID int Identity(1,1) NOT NULL, AnyText varchar(200) COLLATE database_default NOT NULL ) GO
CREATE FUNCTION dbo.F_Bogus ( ) RETURNS @tab TABLE ( LineID int NOT NULL, AnyText varchar(100) COLLATE database_default NOT NULL) AS BEGIN INSERT @tab (LineID, AnyText) VALUES (1, 'UDF1') INSERT @tab (LineID, AnyText) VALUES (2, 'UDF2') INSERT @tab (LineID, AnyText) VALUES (3, 'UDF3') INSERT @tab (LineID, AnyText) VALUES (4, 'UDF4') INSERT @tab (LineID, AnyText) VALUES (5, 'UDF4')
RETURN END GO
Here is the capture of SQL Profiler when executing the statement: SELECT LineID, AnyText FROM dbo.UdfTest WHERE LineID IN (SELECT LineID FROM dbo.F_Bogus())
SQL:BatchStarting SELECT LineID, AnyText FROM dbo.UdfTest WHERE LineID IN (SELECT LineID FROM dbo.F_Bogus()) 51 2008-05-06 17:58:31.543 SQLtmtStarting SELECT LineID, AnyText FROM dbo.UdfTest WHERE LineID IN (SELECT LineID FROM dbo.F_Bogus()) 51 2008-05-06 17:58:31.543 SPtarting SELECT LineID, AnyText FROM dbo.UdfTest WHERE LineID IN (SELECT LineID FROM dbo.F_Bogus()) 51 2008-05-06 17:58:31.577 SPtmtCompleted -- F_Bogus INSERT @tab (LineID, AnyText) VALUES (1, 'UDF1') 51 2008-05-06 17:58:31.577 SPtmtCompleted -- F_Bogus INSERT @tab (LineID, AnyText) VALUES (2, 'UDF2') 51 2008-05-06 17:58:31.577 SPtmtCompleted -- F_Bogus INSERT @tab (LineID, AnyText) VALUES (3, 'UDF3') 51 2008-05-06 17:58:31.577 SPtmtCompleted -- F_Bogus INSERT @tab (LineID, AnyText) VALUES (4, 'UDF4') 51 2008-05-06 17:58:31.577 SPtmtCompleted -- F_Bogus INSERT @tab (LineID, AnyText) VALUES (5, 'UDF4') 51 2008-05-06 17:58:31.577 SPtmtCompleted -- F_Bogus RETURN 51 2008-05-06 17:58:31.577 SQLtmtCompleted SELECT LineID, AnyText FROM dbo.UdfTest WHERE LineID IN (SELECT LineID FROM dbo.F_Bogus()) 51 2008-05-06 17:58:31.543 SQL:BatchCompleted SELECT LineID, AnyText FROM dbo.UdfTest WHERE LineID IN (SELECT LineID FROM dbo.F_Bogus()) 51 2008-05-06 17:58:31.543
I have some nightly jobs that execute stored procedure to call the tables? I want to know which table are called by these stored procedures. Is it possible? Any idea will be appreciated.
I am encountering an issue which is effecting our production environment, none of our sql jobs are now saving any kind of job history, nor are the status of the jobs being saved. I have run a profiler trace and it seems as if procedure : sp_sqlagent_log_jobhistory is not being called during the execution of any of our jobs Has anyone else encountered anything similar?
In a stored procedure the following code snippet 1 checks against duplicate data being inserted. I've tested it with snippet 2 and it works as expected. However, when the procedure is called from ASP.NET the check seems ineffective. I still get the error msg. The application uses a SqlDataSource with the following parameters.
Any suggestions?
Thanks,
Bakis.
PS I want to ask a question on the ASP.NET forum .The login/pwd for this forum "get me in" to the .net forum in the sense that when I log in I see a logout link. I don't get an "ask a question" button though. Is there a separate screening for each forum?
<UpdateParameters>
<asp:Parameter Name="CatItemUID" Type="Int32" />
<asp:Parameter Name="CatName" Type="String" />
<asp:Parameter Name="Item" Type="String" />
<asp:Parameter Name="Quad" Type="Int16" />
<asp:Parameter Name="UID" Type="Int64" />
</UpdateParameters>
snippet 1 :
if (@CatItemComboExists > 0 ) BEGIN --print @CatItemComboExists return 0 END
snippet 2:
begin tran declare @return_status int EXECUTE @return_status = spUpdateCatItemRec 343, 'blah','blih', 2,3 print @return_status rollback
error msg only if proc is called from app
Violation of UNIQUE KEY constraint 'IX_tblCatItemUID'. Cannot insert duplicate key in object 'tblCatItemUID'.
I am maintaining some C# and ASP.NET code with SQL server 2000. My code calls a stored procedure. The code is a little confusing as to the name of the SQL Server stored procedure that is calling. At this point I don't know how to trace into or debug the stored procedure. Kind of hard to do in the first place when you are not absolutely certain as to the stored proc to be called.I can take an educated guess as to which stored procedure is being called. I figure if I can deliberately make a certain stored procedure fail then this might be able to somehow give me the name of the stored proc that I am calling.So is there a way to do this. Namely make a stored procedure fail, or to return the name of the stored Proc?I would sincerely appreciate some help with this problem.
Im using a SqlDataSource control. Ive got my "selectcommand" set to the procedure name, the "selectcommandtype" set to "storedprocedure"What am i doing wrong ? Ive got a Sql 2005 trace window open and NO sql statements are coming through "ds" runat="server" ConnectionString="<%$ ConnectionStrings:myConnectionString %>" SelectCommand="my_proc_name" SelectCommandType="StoredProcedure">
Hi All,I have a report ASP.NET page that allow users to run a report by clicking a buttion to call a store procedure to generate the report, however, the store procedure is taking a few minutes to return the data, thus I got the 'timeout' error message on my page. How do I extend the time on my page?Thanks
IF @a NOT IN ('x', 'y') BEGIN RAISERROR ('Error',16,1) RETURN 0 END RETURN 1
If I execute it from SQL Server, it returns 0. (after the error, of course). If I execute it from MS ACCess through a Pass Through Query, it returns 0. On the same server !!! How could it to make me that ? I have been thought the SP is executed entirely on the server !!!
