How To Install A Null Value Into A DateTime Column Via A TableAdapter?

Feb 8, 2007

Hi,
I have a table adapter that I am using to call a stored procedure on a SQL server database to insert a record.
Everything works ok, except I cannot figure out how to pass a null value to a DateTime field.  In my SQL server database, the column allow nulls.  In my typed dataset, the column is set to allow nulls.
When I try to run the insert procedure with a null value:
 ListTableAdapter da = new ListTableAdapter();
da.InsertList(System.Data.SqlTypes.SqlDateTime.Null, Name);
 

I get this error: Error    14    Argument '1': cannot convert from 'System.Data.SqlTypes.SqlDateTime' to 'System.DateTime?
I've also tried passing it DBNull.Value, but I get an exception with that too.

Can anyone steer me in the right direction with this?

View 11 Replies


ADVERTISEMENT

Handling A Null Datetime Column

Nov 12, 2007

can anybody tell me how to do a select query on a datetime field where if i have a null value in that column, i need to display a some character.

View 4 Replies View Related

How Do I Insert A Record With Possible NULL Values Using A Tableadapter.

Feb 26, 2008

I'm sorry, this question has a pretty long preamble, but bear with me as this will fully explain my problem, and save a number of clarification questions.I am using Visual Web Developer 2005 Express, with SQL Server 2005. After reading a Microsoft article saying that it was much better to use a three tier architecture with data adapters than to write explicit queries, I have used this approach extensively, and generally it works very well.  Typical code patterns are: -        Dim taPassenger As New ShippingTableAdapters.VPassengerTableAdapter        Dim tbpassenger As Shipping.VPassengerDataTable        Dim trpassenger As Shipping.VPassengerRow        .....        '   to process all passengers from a voyage: -        tbpassenger = taPassenger.GetDataByVOYid(Voyageid)        For Nbr As Integer = 1 To tbpassenger.Count            trpassenger = tbpassenger(Nbr - 1)             '    I now have the row available in properly-typed fields, eg trpassenger.vpxName             ...        Next        '   to read and process a single passenger        tbpassenger = tapassenger.GetDataByVPXid(VPXid)        trpassenger = tbpassenger(0)The table adapter has been created with Insert,Update, Delete methods.   Thus you can assign values to row fields, and then update the row: -        trpassenger.VPXName = "New Name"        ....        tapassenger.update(trpassenger)There are actually several overloads of the update method:  you could have written a field list, like this, where the names (VPXid etc) would be defined in my program as variables of the appropriate type for the corresponding column.        tapassenger.update(VPXid, VPXName, VPXAge, ....HOWEVER,  this doesn't work properly if you have non-string data that could be null.   Thus if the fourth field is a foreign key that could be null, if you write        Dim VPXVoyId as Nullable(of GUID)        VPXVoyid = nothing        tapassenger.update(VPXid, VPXname, VPXAge, VPXVoyid, ...or         Trpassenger.VPXVoyid = Nothing        tapassenger.update(trpassenger) you do NOT put a null value into the database.  Instead you store a value of "00000000-0000-0000-0000-000000000000".   You can solve this annoying problem in two ways: -A.   If you will ALWAYS be storing a null value at this point of your program, then simply write the update statement like this: -        tapassenger.update(VPXid, VPXname, VPXAge, Nothing, ...Here "Nothing" actually means "DBNull" even though it doesn't mean this when used in a normal VB assignment (and neither does DBNull).B   You can use the SetxxxxNULL method: -        If trpassenger.VPXVoyid = nothing then             trpassenger.SetVPXVoyidNull        End If        tapassenger.update(trpassenger) Thus when the program logic is complex and there are many paths to the update statement I will often put statements such as this in front of the update statement, using SetxxxxxNull for all non-string values that may be null.  You don't need to worry about string values because the Nullvalue property can be used to simply say that Null values are empty, and it all works properly, but for reasons unknown Microsoft have prohibited this for other data types. Now at last we get to my question, which is "How do I do the equivalent for an Insert?"   tapassenger.insert does not have any overloads, and the only form is  tapassenger.insert(field list).   But this creates the problem above:  if VPXVoyid = nothing then I insert the not-null value of "00000000-0000-0000-0000-000000000000".   If I COULD use the form tapassenger.insert(trpassenger), then I'd have another problem: if you haven't set trpassenger (for example with trpassenger = tbpassenger(0)) then it will not exist, so you will get an exception when you try to reference it.  Yet you can't write    If isnothing(trpassenger) then       trpassenger = new shipping.vpassengerrow)         (I've tries this both as an assignment, and as a Dim statement)    end ifSo far I can think of only two solutions, both awful: -a/    Use multi-choice logic to choose an appropriate insert statement.  If there is only one or two possibly-null fields, I could write:-        If field4 = nothing then            trpassenger.insert (VPXid, VPXname, VPXAge, Nothing, ..        However if there is more than one possibly-null field, you need (2 to the power of  nbr-of-possibly-null-fields) insert statements, with of course a lot of testing to choose which oneb/    I could insert the record with nulls, then read it back and update it.  Surely there is a better way!   Help! Thank you, Robert Barnes.    

View 2 Replies View Related

Transact SQL :: Calculate DateTime Column By Merging Values From Date Column And Only Time Part Of DateTime Column?

Aug 3, 2015

How can I calculate a DateTime column by merging values from a Date column and only the time part of a DateTime column?

View 5 Replies View Related

Millisecond Values Missing When Inserting Datetime Into Datetime Column Of Sql Server

Jul 9, 2007

Hi,
I'm inserting a datetime values into sql server 2000 from c#

SQL server table details
Table nameate_test
columnname datatype
No int
date_t DateTime

C# coding
SqlConnection connectionToDatabase = new SqlConnection("Data Source=.\SQLEXPRESS;Initial Catalog=testdb;Integrated Security=SSPI");
connectionToDatabase.Open();
DataTable dt1 = new DataTable();
dt1.Columns.Add("no",typeof(System.Int16));
dt1.Columns.Add("date_t", typeof(System.DateTime));
DataRow dr = dt1.NewRow();
dr["no"] = 1;
dr["date_t"] = DateTime.Now;
dt1.Rows.Add(dr);
for(int i=0;i<dt1.Rows.Count;i++)
{
string str=dt1.Rows["no"].ToString();
DateTime dt=(DateTime)dt1.Rows["date_t"];
string insertQuery = "insert into date_test values(" + str + ",'" + dt + "')";
SqlCommand cmd = new SqlCommand(insertQuery, connectionToDatabase);
cmd.ExecuteNonQuery();
MessageBox.Show("saved");
}
When I run the above code, data is inserted into the table
The value in the date_t column is 2007-07-09 22:10:11 000.The milliseconds value is always 000 only.I need the millisecond values also in date_t column.
Is there any conversion needed for millisecond values?

thanks,
Mani

View 3 Replies View Related

Cannot Insert The Value NULL Into Column 'OrderID' -- BUT IT IS NOT NULL!

Apr 2, 2007

I am getting this error: "Cannot insert the value NULL into column 'OrderID', table 'outman.outman.Contact'; column does not allow nulls. INSERT fails." -- But my value is not null. I did a response.write on it and it show the value. Of course, it would be nice if I could do a breakpoint but that doesn't seem to be working. I'll attach a couple of images below of my code, the error, and the breakpoint error.
 

 
 

Server Error in '/' Application.


Cannot insert the value NULL into column 'OrderID', table 'outman.outman.Contact'; column does not allow nulls. INSERT fails.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.Data.SqlClient.SqlException: Cannot insert the value NULL into column 'OrderID', table 'outman.outman.Contact'; column does not allow nulls. INSERT fails.Source Error:



Line 89: sContact.Phone = sPhone.Text.Trim
Line 90: sContact.Email = sEmail.Text.Trim
Line 91: sContact.Save()
Line 92:
Line 93: Dim bContact As Contact = New Contact()Source File: F:InetpubwwwrootOutman KnifeCheckout.aspx.vb    Line: 91 Stack Trace:



[SqlException (0x80131904): Cannot insert the value NULL into column 'OrderID', table 'outman.outman.Contact'; column does not allow nulls. INSERT fails.]
System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection) +857354
System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) +734966
System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj) +188
System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj) +1838
System.Data.SqlClient.SqlDataReader.HasMoreRows() +150
System.Data.SqlClient.SqlDataReader.ReadInternal(Boolean setTimeout) +214
System.Data.SqlClient.SqlDataReader.Read() +9
System.Data.SqlClient.SqlCommand.CompleteExecuteScalar(SqlDataReader ds, Boolean returnSqlValue) +39
System.Data.SqlClient.SqlCommand.ExecuteScalar() +148
SubSonic.SqlDataProvider.ExecuteScalar(QueryCommand qry) +209
SubSonic.DataService.ExecuteScalar(QueryCommand cmd) +37
SubSonic.ActiveRecord`1.Save(String userName) +120
SubSonic.ActiveRecord`1.Save() +31
Checkout.btnCheckout_Click(Object sender, EventArgs e) in F:InetpubwwwrootOutman KnifeCheckout.aspx.vb:91
System.Web.UI.WebControls.Button.OnClick(EventArgs e) +105
System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +107
System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +7
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +11
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +33
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +5102



Version Information: Microsoft .NET Framework Version:2.0.50727.42; ASP.NET Version:2.0.50727.42

View 8 Replies View Related

DB Engine :: Not Able To Make Column To Null Value From Not Null

May 13, 2015

It's giving me an error while I'm trying to change column value from not null to null..

'tblid' table
- Unable to modify table.  

Cannot insert the value NULL into column 'ValidID', table 'Xe01.dbo.Tmp_tblid'; column does not allow nulls. INSERT fails.

The statement has been terminated.

View 4 Replies View Related

Insert NULL Value Into DateTime

Dec 11, 2006

Does anyone have a simple way of inserting a NULL value into sql 2000 datetime. I'm using vb.net.
All I want is if the user does not enter a date in a textbox to to send a NULL value to the DB instead of having the db enter the default value as 1/1/1900.
Thank you

View 3 Replies View Related

DateTime Parameter With NULL Value

Apr 8, 2008

Hi,
I have a report with datetime parameter which is required to be optional (there should be an option not to select this parameter which would cause in not narrowing result of this report by this parameter).

I used datetime parameter (to have the calendar control for selecting date) for which I enabled NULL value. The result is that next to this parameter there is a checkbox "NULL" which allows to send NULL as a value of this parameter. Everything is fine except for the prompt: "NULL"... Is there a way to change it? I would see there something like "Empty" or "Not selected", which would be understandable for users of the report.

Or is there any other way to send an empty date as a value of this parameter? (Setting some unusual value like 1/1/1900 for empty date is not sufficient as the empty value shouldn't appear in the parameter control).

Thank you,
Michal

View 9 Replies View Related

INSERT NULL Value + DateTime

Dec 10, 2007

Hi,

If a datetime variable is empty I want to insert null into the database table.

How do i do this? Below code doesn't work. Get this error...
Cannot implicitly convert type 'System.DBNull' to 'System.DateTime'




Code Block
if (myDataGridView.Rows[iRow].Cells["myDateDataGridViewTextBoxColumn"].Value.ToString() != "")
{
myDateReport = DateTime.Parse(myDataGridView.Rows[iRow].Cells["myDateDataGridViewTextBoxColumn"].Value.ToString());
}
else
{
myDateReport = DBNull.Value;
}

View 2 Replies View Related

Set NULL To Datetime Parameter

Dec 14, 2006

Hi All,

I have a problem while trying to set "NULL" value to my datetime parameters.

I have two datetime parameters (AllowNull=True) on my report. (BeginDate and EndDate)

it works fine in preview mode in reporting design.

The problem occurs, if I try to set an emtpy value to these parameters in my asp.net application.

The code looks like;

Dim repParams(1) As ReportParameter

repParams(0) = New ReportParameter("BeginDate", String.Empty)

repParams(1) = New ReportParameter("EndDate", String.Empty)

-----

ReportParameter method requires String parameters. If user set any datetime value, I am sending "String.Empty" value to my paramaters in order to set them as NULL. But I am getting "rsReportParameterTypeMismatch Error."

How Can I set NULL value to these parameters from asp.net application?

Thans alot in advance.

View 9 Replies View Related

Inserting NULL Into Datetime Field

Aug 17, 2007

I have a datetime field in a database which I am programmatically inserting values into. The field can be null or not null. However, I am having problems inserting NULL as part of my SQLCommand.
The value is pulled from a text box (linked to a calendar extender) and when I select a value it is being inserted fine. If I just leave the box blank though, I want the field to be set to NULL. I have tried adding in ,DBNULL.Value, as part of my VALUES(…) string, but this throws an exception. I Have tried just inserting ‘’ but that also throws an exception (“The conversion of a char data type to a datetime data type resulted in an out-of-range datetime valueâ€?), so I don’t know how I can insert this value when the field is blank? 
Can anyone shed some light please? Thanks
 

View 2 Replies View Related

Handling A NULL Datetime In DATEDIFF()

Jan 28, 2008

 I want to select records where AnswerDate is within 30 days of today, and include records that have a NULL AnswerDate.
How can I tell DATEDIFF to treat NULL as Today?  (I think I am looking for something like VBA's nz() function.) 
 
SELECT RegistrationID ,  
AnswerDate, 
(DATEDIFF(dd,AnswerDate,GETUTCDATE())) AS InvitationAge
FROM Registration
WHERE (DATEDIFF(dd,AnswerDate,GETUTCDATE())) <= 30
 
Thanks

View 3 Replies View Related

Xsd Files And Null Datetime Columns

Feb 5, 2008

Ive created a Data Access Layer (xsd file) and some of the tables have DateTime columns.  I need to allow NULL values to be saved, but when I try to do that I get an error
In my code (c#) ive used Nullable DateTime, but when I try to assign a nullable Datetime to a DateTime column, I get this error
cannot implicitly convert type 'System.DateTime?' to 'System.DateTime'
I understand the reasons why, so how do I save null DateTime values to the underlying database through a schema ?
In the schema file, the DateTime columns have <DBNULL> as the default value, AllowBDNull is true, but I am only allowed 'Throw exception' on the NULL value property
I could probably do this another way (by not using a schema and writing the code myself)  but Id prefer to keep the strongly typed code.
 I dont want to use MAx or MIn values for the default datetime values, so how can this be done ?

View 3 Replies View Related

DateTime Null In Sql Server Database

May 11, 2005

Hi,
I'm using this source code in order to set the DateTime field of my Sql Server database to null.I am retreiving dates from an excel sheet. If no date is found, then I set my variable myDate to DateTime.MinValue then i test it just before feeding my database.
I have an error saying that 'object' does not contain definition for 'Value'.
In french : Message d'erreur du compilateur: CS0117: 'object' ne contient pas de définition pour 'Value'dbCommand.Parameters["@DateRDV"].Value = System.Data.SqlTypes.SqlDateTime.Null;
The funny thing is that in the class browser i can see the Value property for the class Object...
C#, asp.netstring  sqlStmt ; string  conString ; SqlConnection cn =null; SqlCommand cmd =null; SqlDateTime sqldatenull ; try{sqlStmt = "insert into Emp (Date) Values (@Date)  ";conString = "server=localhost;database=Northwind;uid=sa;pwd=;";cn = new SqlConnection(conString);cmd = new SqlCommand(sqlStmt, cn); cmd.Parameters.Add(new SqlParameter("@Date", SqlDbType.DateTime));sqldatenull = System.Data.SqlTypes.SqlDateTime.Null; if (myDate == DateTime.MinValue) {cmd.Parameters ["@Date"].Value =sqldatenull ;}  else{cmd.Parameters["@Date"].Value = myDate;}cn.Open();cmd.ExecuteNonQuery();Label1.Text = "Record Inserted Succesfully";}catch (Exception ex){Label1.Text = ex.Message;}finally{cn.Close();}

View 3 Replies View Related

Cant Insert NULL To DateTime Field

Jun 5, 2006

Hi I'm using DetailView and I have a text box which show the date. I have formated the date as shortDate {0:d} format. I want to insert/update null if that text box is empty.
I have tried putting null value in my Update statement in sqlDataSource. And I'm getting error saying can't convert varchar to smalldatetime.
If I don't set null value as above, some large date (01/01/2033) has been inserted in my database.
Can anyone help me?
Moe

View 5 Replies View Related

Null Datetime Field Contains 1-Jan-1900

Feb 10, 1999

I have defined fields in a table as datetime fields and allow nulls. SQL 6.5 is placing 1-Jan-1900 in all of these fields causing me to have to filter out these dates when retrieving a recordset.
How do I get rid of this?


thanks!

View 1 Replies View Related

Null Datetime Value Problem In Sproc

Aug 28, 2006

Hi. I wrote a sproc to insert values from a tab-delimited text file into SQL 2005. There is a column in the text file that contains datetime values. Some of the values may be null. I have defined my sproc as:[CODE]createproc [dbo].[spInsertTransactionData]@LoadTransactionCode tinyint,@AccountNumber char(19),@PostingDate char(8) = '01011900'asinsert into table1( LoadTransactionCode, AccountNumber, PostingDate)values(@LoadTransactionCode,@AccountNumber,cast(stuff(stuff(@PostingDate, 3, 0, '/'), 6, 0, '/') as datetime)) [/CODE]I am getting the error:"The conversion of a char data type to a datetime data type resulted in an out-of-range datetime value."When I step into the sproc, I see that the problem arises when the code encounters a "blank" value for PostingDate.As always, thanks for the help!

View 3 Replies View Related

Datetime Picker Problem After SQL SP2 Install!!

Apr 1, 2008



Hi,

I installed SQL SP2 and now the datepicker on the reporting server is formatting the dates in US format regardless of what regional settings are stored on the client.

The version of sql server 2005 is..

Microsoft SQL Server 2005 - 9.00.3054.00 (Intel X86) Standard Edition on Windows NT 5.2 (Build 3790: Service Pack 2)

Anyone know how to fix this?

Thanks
Niall

View 6 Replies View Related

Sql SELECT Returning NULL On DateTime Field

Aug 8, 2006

Hi there ;
This Problem is goin to make me crazy!
I've got a table with couple of fields, 2 of them are DateTime, in Sql Express 05 .
I used asp.net 2.0 to insert datetime values, directly,  using sth like DateTime.Now.ToString() .
i use 2 selects as follows :
1)select * from X where  Date1='8/9/2006 11:17:41 AM'
2)select * from X where  Date2='8/9/2006 11:17:41 AM'
#1 is OK, but the second one returns a row with all columns set to NULL .
(X is the name of the table)
Thanks in advance

View 6 Replies View Related

How Do You Handle Null DateTime Values From SQL Server?

Aug 17, 2005

If myDateTimeColumn contains a <NULL> value.  How do you handle that when reading into a DateTime object in your code?DateTime myDate = Convert.ToDateTime(dr["myDateTimeColumn"]);Does not work, it throws: System.InvalidCastException: Object cannot be cast from DBNull to other types.
I am curious as to what others are doing to handle this?

View 6 Replies View Related

Null Values In Datetime Fields, Howto?

Jul 12, 1999

Hi,
When I try to insert a new record into a table that has a datetime field that allows nulls, a default 01/01/1900 date is inserted instead of null. I recreated the table and set the datatype to smalldatetime and I still get the error. What have I missed?

View 1 Replies View Related

Sending Null DateTime Value To Stored Procedure From VB

Nov 3, 2005

In a VB.NET script, I am adding the dbnull value to a parameter that will populate a smalldatetime column:
cmd.Parameters.Add("@unitHdApprove", System.DBNull.Value.ToString)

The stored procedure then defines the input as smalldatetime:
@unitHdApprove smalldatetime,

However, the result is that the record is inserted with 1/1/1900 as the date value, instead of <NULL>.

I'm guessing that this occurs because the conversion of a '' to date will return 1/1/1900, and VB requries the parameter value to be a string (at least with this syntax), so System.DBNull.Value.ToString really equals ''.

I've rewritten the proc to accept the date as a string instead, and then for each date, cast it to a smalldatetime or set it to null as is appropriate. But this is a really bulky way to do things with more than a few dates! Is there any way to change what is in my VB code so that the procedure will insert the actual null value?

Thanks,
Sarah

View 2 Replies View Related

Data Conversion - NULL Datetime Causes Failure

Jul 9, 2007

Hi,



I have a flat file source and am bringing it into an OLE DB Destination connected to a SQL Server 2005 database. Since I am bringing in the data via a flat file, I have a conversion step in the data flow, which uses a "Data Conversion" transformation to convert each column to the appropriate destination data type.



When I run my SSIS package, if the datetime column in the flatfile is NULL, then the Data Conversion step fails. I have my Data COnversion step set to redirect error rows to an error output. So, I get all the rows with populated datetime values in the intended destination, and none of the rows with null datetime values (these go to the error destination.)



This is a problem! I need to make sure all valid rows fall through. It seems very odd to me that a NULL datetime could not be converted to a datetime data type. This makes no sense, since a datetime column can naturally hold NULL, just like any other type. So, my question is: is this a bug??? It seems to me it is. I can't believe this would be the desired behavior?!



Microsoft: please let us know whether this is expected behavior. If so, then what would the desired workaround be?



Thanks

View 5 Replies View Related

Alter Column From Not Null To Null

Apr 27, 2007

Dear folks,
please tell me the query for altering a column from not null to null

Vinod

View 15 Replies View Related

Changing The Column From NULL To NOT NULL

Feb 28, 2008

Hi all,

One of my columns is the table has some Null values, and I Would like to stop having NULL values into that column any more.

I know, If I alter the column to NOT NULL will throw me an error, since it does a batch update.

Is there any way to achieve this...

Thanks...

View 3 Replies View Related

Change The Column From NULL To NOT NULL

Feb 29, 2008

Hi all,


One of my columns is the table has some Null values, and I Would like to stop having NULL values into that column any more.


I know, If I alter the column to NOT NULL will throw me an error, since it does a batch update.


Is there any way to achieve this...


Thanks...

View 3 Replies View Related

How To Replace DateTime Field With Null Value In SQL 2005 Server

Apr 7, 2006

How to replace DateTime field with null value in SQL 2005 server
I create a stored procedure aa, It works well, but sometimes I hope to replace CreateDate field with null value,I don't know how to doIt seems that datetime type is not null value
create aa  @CreateDate DatetimeAsUpdate cw set CreateDate=@CreateDate
 
 

View 3 Replies View Related

Mssql Won't Find NULL Values In Datetime Field??

Feb 13, 2007

Hi

I have a really simple query which i can't figure out why its not working. I have a table called 'ADMIN' which has a datetime field called 'date_edited'. Because the majority of records have never been edited, i have allowed null values and they are filled with 'NULL' in each record. How ever, when i try:

SELECT * FROM ADMIN WHERE date_edited = NULL

I get no records, but i can see and know i have hundreds! I know i'm doing somthing really stupid, but for life of me can't figure it out! :eek:

thanks

View 10 Replies View Related

Reporting Services :: DateTime Parameter With NULL Value Is Default

Jul 4, 2015

I have a report with datetime parameter which is required to be optional (there should be an option not to select this parameter which would cause in not narrowing result of this report by this parameter).

I used datetime parameter

@daTo (to have the calendar control for selecting date) and check on "Allow Null" value. Here is default Value.

I've also tried to set DefaultValue expression was "=Nothing".  

IN my query of data set, here is the part I use the parameter @daTo
 ... Where (@daTo IS NULL OR TRUNC(@daTo) >= TRUNC(pe.start_time) ....

But when I run the report, I got below error:

ORA-00932: inconsistent datatypes: expected DATE got NUMBER

I think it @daTo value actually not null so it try to TRunc the value

I don't know how to set null value default in my report.

View 4 Replies View Related

Conditional Execution With Null Checking For DateTime Field

Mar 11, 2008

There was a similar question to mine a few time ago about conditional execution, but I'm having some problems with it to which I couldn't find any answer, could anyone help?

My condition is checking if a DateTime from a DB table is null. I use the Execute SQL Task to retrieve the record (SELECT TOP 1 * FROM myTable WHERE conditions = TRUE), then I map 2 fields to their respective global variables.

Then I created the green arrow connector and used a precedence expression based on sucess. I used the expression IsNull(@variable). For some reason, even if the @variable comes as null - I checked the info in the DB - it still comes out as '1999-11-30'

I've looked around and the IsNull method can be used to also change the value in the event of it being null, could it be changing my variables value to this even if I didn't pass that value as a parameter to the function? If so, how else can I test it for null? I've tried "== null", "= null" and even ".equals(null)" - which I know is absurd, but I'm running out of options here...

Could you enlighten me, please???
Thanks in advance!

View 4 Replies View Related

T-SQL (SS2K8) :: Cannot Define Primary Key Constraint On Nullable Column But Column Not Null

Sep 30, 2014

We have a database where many tables have a field that has to be lengthened. In some cases this is a primary key or part of a primary key. The table in question is:-

/****** Object: Table [dbo].[DTb_HWSQueueMonthEnd] Script Date: 09/25/2014 14:05:09 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
SET ANSI_PADDING ON
GO
CREATE TABLE [dbo].[DTb_HWSQueueMonthEnd](

[Code] ....

The script I am using is

DECLARE@Column varchar(100)--The name of the column to change
DECLARE@size varchar(5)--The new size of the column
DECLARE @TSQL varchar(255)--Contains the code to be executed
DECLARE @Object varchar(50)--Holds the name of the table
DECLARE @dropc varchar(255)-- Drop constraint script

[Code] ....

When I the the script I get the error message Could not create constraint. See previous errors.

Looking at the strings I build

ALTER TABLE [dbo].[DTb_HWSQueueMonthEnd] DROP CONSTRAINT PK_DTb_HWSQueueMonthEnd
ALTER TABLE [dbo].[DTb_HWSQueueMonthEnd] Alter Column [Patient System Number] varchar(10)
ALTER TABLE [dbo].[DTb_HWSQueueMonthEnd] ADD CONSTRAINT PK_DTb_HWSQueueMonthEnd PRIMARY KEY NONCLUSTERED ([Patient System Number] ASC,[Episode Number] ASC,[CensusDate] ASC)
WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]

They all seem fine except the last one which returns the error

Msg 8111, Level 16, State 1, Line 1
Cannot define PRIMARY KEY constraint on nullable column in table 'DTb_HWSQueueMonthEnd'.
Msg 1750, Level 16, State 0, Line 1
Could not create constraint. See previous errors.

None of the fields I try to create the key on are nullable.

View 2 Replies View Related

Cannot Insert The Value NULL Into Column SnapshotDataID, Table ReportServerTempDB.dbo.SessionData; Column Does Not Allow Nul

May 3, 2007

I receive this message when I try to run any report. The reportserver and reportservertempdb databases were upgraded using backup/restore from SQL2000 to SQL2005 on a separate server which is running RS2005 . Please help. Thanks

View 1 Replies View Related







Copyrights 2005-15 www.BigResource.com, All rights reserved