I would like to know if it's possible to pass NULL value to the database. I want to update a column, a parameter has to be passed in to do so, i.e @value = '123'. but if there were no parameter value, i.e @value = '', I want to the value in the database to be NULL. I don't want to pass (''). can this be achieved?
View 5 RepliesHow can I pass into the database (@User_fax = null) if the fax form field is empty, from a command type Stored Procedure? For example:
Dim CmdUpdate As New SqlCommand("Form2_NewUser", strConnection)
CmdUpdate.CommandType = CommandType.StoredProcedure
CmdUpdate.Parameters.Add("@User_fax", SqlDbType.char, 9)
CmdUpdate.Parameters("@User_fax").Value = fax.Text()
...
strConnection.open()
CmdUpdate.ExecuteNonQuery
strConnection.close()
And, the stored procedure inside Sql server:
USE market1
GO
ALTER PROC Form2_NewUser
@User_id bigint, @User_fax char(9),...
AS
SET NOCOUNT ON
UPDATE Users
SET User_fax = @User_fax, ...
WHERE User_id = @User_id
SET NOCOUNT OFF
GO
Thank you,
Cesar
How can I pass NULL to a parameter, if now entry is made in the textbox?
Dim KeywordParam As New SqlParameter("@Keyword", Me.KeyWordText.Text)
MyCommand.Parameters.Add(KeywordParam)
hi i am using formview
i have a date field textbox which selects date from ajax calender
now my point is when i make this field blank
at that time in my gridview rather then displaying the date field blank
it shows me the value 1 Jan 1900
this is the default date of sqlserver which it returns when we leave the field ''
now when i pass the value null it automatically takes it as ''
in my class file my function is
public object checkdate(TextBox txtdate) { if (txtdate.Text == "") { return null; } else { return txtdate.Text; } }
in my cs file i wrote object checkemptydate = obj.checkdate(nextvaccinationdate);
string values = patientID + ",'" + vaccination + "',convert(varchar,'" + vaccinationdate + "',106)," + checkemptydate + ",'" + remarks + "'";
note that i even tried this too
string values = patientID + ",'" + vaccination + "',convert(varchar,'" + vaccinationdate + "',106)," + null + ",'" + remarks + "'";
and
string values = patientID + ",'" + vaccination + "',convert(varchar,'" + vaccinationdate + "',106),convert(varchar,'" + checkemptydate + "',106),'" + remarks + "'";
but nothing is working it passes '' not null
how could i solve this problem?
shweta
How to pass a null to SelectParameters in SqlDataSource?
The type of "CreateDate" is DateTime, the following code can be run correctly!
SqlDataSource1.SelectParameters["CreateDate"].ConvertEmptyStringToNull = true;SqlDataSource1.SelectParameters["CreateDate"].DefaultValue = "2006-11-12";
now I hope to pass null value to the Parameter "CreateDate", but the following 3 section codes don't work!
SqlDataSource1.SelectParameters["CreateDate"].ConvertEmptyStringToNull = true;SqlDataSource1.SelectParameters["CreateDate"].DefaultValue = string.Empty;
or
SqlDataSource1.SelectParameters["CreateDate"].ConvertEmptyStringToNull = true;SqlDataSource1.SelectParameters["CreateDate"].DefaultValue =null;
or
SqlDataSource1.SelectParameters["CreateDate"].ConvertEmptyStringToNull = true;SqlDataSource1.SelectParameters["CreateDate"].DefaultValue = "";
I'm developing a web app using VS2005. I have a webpage with panel containing a gridview populated by a SQLdatasource. The SQLdatasource in turn is populated by a stored procedure that can take up to 5 parameters. The user types in up to 5 separate words (searchterms) in a text box which are then parsed and passed to the stored proc in the datasource which performs a fulltext search. The gridview then becomes visible. My problem is that unless the user types in 5 searchterms (no less), the gridview returns zero rows. 5 searchterms returns the proper results. Somehow, I need to be able to pass in null or empty values for unneeded parameters.
I've tested the stored procedure in Query Analyzer and from within the SQLdatasource configuration (using Test Query) using 0 up to 5 parameters and it works fine, so that's not my problem. Here's the code that runs after the user types in their search term(s) and presses a button:Public Sub FTSearch_Command(ByVal sender As Object, ByVal e As CommandEventArgs) Handles btnFullText.Command
Dim x As Integer
pnlFullText.Visible = Falsefiltertext = Replace(txtSearchTxt.Text, "'", "''")
If Not filtertext Is Nothing Then
filtertext = filtertext.Trim
Else
Return
End IfDim arrayString() As String = filtertext.Split(" ")
Dim length As Integer = arrayString.LengthFor x = 0 To (length - 1)
If Not arrayString(x) Is Nothing ThenSelect Case x
Case 0 : lblFTParm1.Text = arrayString(0)Case 1 : lblFTParm2.Text = arrayString(1)
Case 2 : lblFTParm3.Text = arrayString(2)Case 3 : lblFTParm4.Text = arrayString(3)
Case 4 : lblFTParm5.Text = arrayString(4)
End Select
End If
Next
pnlFullText.Visible = "True"
End Sub
Any ideas?
Thanks in advance.
sSQL = "spBPT_Fuel_Set_Status_Approved"
cmdDailyPrices.CommandText = sSQL
cmdDailyPrices.Parameters.Add("@user", "Philippe")
cmdDailyPrices.Parameters.Add("@verbose", "0")
cmdDailyPrices.Parameters.Add("@Day_1_add", rowBand1.Cells(DayParameters.AddFactor).Value)
cmdDailyPrices.Parameters.Add("@Day_1_multiply", rowBand1.Cells(DayParameters.MultiplyFactor).Value)
cmdDailyPrices.Parameters.Add("@Day_2_add", "NULL")
cmdDailyPrices.Parameters.Add("@Day_2_multiply", "NULL")
For @Day_2_add and @Day_2_multiply parameters I want to pass the value as NULL not string "NULL"
could you please let me know how to do this?
Thanks
What is the syntax to pass in null value for boolean data type in VB in the stored procedure?
This is what I tried and it doesn't work.
.Parameters.Append .CreateParameter("@disposition", adBoolean, adParamInput, 1, vbNull)
Thank you.
The following t-sql 2012 works fine in sql management studio. However when I place it in a .net 2010 web form application, I am told the sql does not work when the parameter values are null. Thus can you tell me what I can change in the sql below that will accept null as 3 possible input values?
SELECT i.[lastName]
,i.[firstName]
,i.[middleName]
,i.[suffix]
,a.[userid]
[code]...
I have a Nullable columns. I want the value to be zero if NULL is passed.
1) having a view for every such table,
2) using ISNULL for needed columns in that view
3) using those view for inserts instead of using tables directly.
This way i can reduce the number of places to use ISNULL in all my SPs.I dont want to make it to NOT NULL, as my application impact will be high. And Default constraint does not work here.
Hi there,
I am using SQL Reporting Services to generate reports. I am calling the stored procedure from the reporting services. The procedure has parameters which take null. I am stuck with passing null to the parameter from the reporting services. I shows the error and the report is not generated. Could you please suggest the way to pass null to the stored procedure parameter from the SQL Reporting Services.
Kindly reply me with the possible solution ASAP.
Thanks in advance
I'm in sql server mgmt 2005 and i highlighted a stored proc and clicked on "execute". I need to pass a null value in as the first param value to test this stored proc. what is the syntax, is below correct?
EXECUTE @RC = [SomeDataBaseName].[dbo].[sp_SomeStoredProcedure]
null
,'1234'
,1
Hi all
How to pass Null parameter in Reporting Services.
Regards
Hello,I've been searching the web for quite some time to resolve the problemof "1/1/1900" returning in a datetime field in SQL that resulted from ablank (not NULL) value being passed to it through an ASP page.The solution is that a NULL value needs to passed to SQL from ASP.Thats fine...I understand the why the problem is happening and thesolution around it. HOWEVER, I can't seem to get the proper syntax towork in the ASP page. It seems no matter what I try the "1/1/1900"still results. Below are a few variations of the code that I havetried, with the key part being the first section. Does anyone have anysuggestions?!?!?______________cDateClosed = ""If(Request.Form("dateClosed")= "") ThencDateClosed = (NULL)end ifsql="UPDATE rfa SET "&_"dateClosed='"& cDateClosed &"', "&_"where rfaId='"& Request.Form("RFAID")&"'"_____________________________cDateClosed = ""If(Request.Form("dateClosed") <> "") ThencDateClosed = (NULL)end ifsql="UPDATE rfa SET "&_"dateClosed='"& cDateClosed &"', "&_"where rfaId='"& Request.Form("RFAID")&"'"_____________________________cDateClosed = ""If(Request.Form("dateClosed")= "") ThencDateClosed = NULLend ifsql="UPDATE rfa SET "&_"dateClosed='"& cDateClosed &"', "&_"where rfaId='"& Request.Form("RFAID")&"'"_______________Thanks in advance!!!!
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Hello,
I have a stored procedure that on two fields it allows null. On the report, I have two DropDownList boxes that are populated with data, however, I would like the user to be able to have the option of not selecting an item from these list, thus passing null to the stored procedure.
When I goto "Report | Report Parameters" I have set these fields to "allow null" and "allow blank" and at the bottom I also gave it the default value of null.
When I run the report in preview mode, those two dropdownlist have a <Select a Value> and my assumption is since I want them to pass null, I will just leave them that way. However, when the report is ran, I receive an error saying "Please select a value for the parameter: (my parameter)". So it forces me to select an option at which I don't want to do.
How can I set this to pass a null?
Thanks,
Flea#
I need to pass in null/blank value in the date field or declare the field as string and convert date back to string.
I tried the 2nd option but I am having trouble converting the two digits of the recordset (rs_get_msp_info(2), 1, 2))) into a four digit yr. But it will only the yr in two digits.
The mfg_start_date is delcared as a string variable
mfg_start_date = CStr(CDate(Mid(rs_get_msp_info(2), 3, 2) & "/" & Mid(rs_get_msp_info(2), 5, 2) & "/" & Mid(rs_get_msp_info(2), 1, 2)))
option 1
I will have to declare the mfg_start_date as date but I need to send in a blank value for this variable in the stored procedure. It won't accept a null or blank value.
With refresh_shipping_sched
.ActiveConnection = CurrentProject.Connection
.CommandText = "spRefresh_shipping_sched"
.CommandType = adCmdStoredProc
.Parameters.Append .CreateParameter("ret_val", adInteger, adParamReturnValue)
.Parameters.Append .CreateParameter("@option", adInteger, adParamInput, 4, update_option)
.Parameters.Append .CreateParameter("@mfg_ord_num", adChar, adParamInput, mfg_ord_num_length, "")
.Parameters.Append .CreateParameter("@mfg_start_date", adChar, adParamInput, 10, "")
Set rs_refresh_shipping_sched = .Execute
End
Please help
I would drop and add the table but the data can't be deleted. So if anyone could help with the statement it would be greatly appreciated. Thanks
View 7 Replies View RelatedWe have a case where in we should show date based on conditions for e.g if we had a column defined as
col varchar(10) then we would show col as 'NULL' for some condition and actual value when no condition
Normaly date values are stored here e.g under col 20150901 .
Case
when col>'20150901' then 'NULL'
else col
end as Derivedcol
Note this is an extract process and we are presenting data by pumping the data in a table .
Now there is another similar column -colz varchar(10) which stores date but doesnt have case condition so whenever date has no value its shows null which is database null.
So whats the difference between database null and string null ?
How can we show database null for the case condition instead of string "null"?
Hi
We already used Oracle Datasatage Server the following Query statement for Source and Lookup.here there is parameter maping in the SQl Statement . How can achive in SSIS the Folowing Querystatment?
Query 1: (source View Query)
SELECT
V_RDP_GOLD_PRICE.GDR_PRODUCT_ID, V_RDP_GOLD_PRICE.ASSET_TYPE, V_RDP_GOLD_PRICE.PREFERENCE_SEQ, V_RDP_GOLD_PRICE.RDP_PRICE_SOURCE, TO_CHAR(V_RDP_GOLD_PRICE.PRICE_DATE_TIME,'YYYY-MM-DD HH24:MI:SS'), TO_CHAR(V_RDP_GOLD_PRICE.REPORT_DATE,'YYYY-MM-DD HH24:MI:SS'), V_RDP_GOLD_PRICE.SOURCE_SYSTEM_ID
FROM
V_RDP_GOLD_PRICE V_RDP_GOLD_PRICE
WHERE
REPORT_DATE = (select max(report_date) from V_RDP_GOLD_PRICE where source_system_id = 'RM' )
Query 2: (look up )
SELECT
GDR_PRODUCT_ID,
TO_CHAR(MAX(PRICE_DATE_TIME),'YYYY-MM-DD HH24:MI:SS') ,
TO_CHAR(REPORT_DATE,'YYYY-MM-DD HH24:MI:SS')
FROM
V_RDP_GOLD_PRICE
where
GDR_PRODUCT_ID = :1 and
report_date = TO_DATE(:2,'YYYY-MM-DD HH24:MI:SS') AND
PRICE_DATE_TIME BETWEEN TO_DATE(:2,'YYYY-MM-DD HH24:MI:SS') - 7) AND TO_DATE(:2,'YYYY-MM-DD HH24:MI:SS')
GROUP BY GDR_PRODUCT_ID, TO_CHAR(REPORT_DATE,'YYYY-MM-DD HH24:MI:SS')
please anyone give the sample control flow and how to pass the parameter?
Thanks & regards
Jeyakumar.M
Hy,
I have question reagrding to SQL Server Authentication, I use SQL express and Microsoft SQL Server Management Studio Express. For creating and editing databases, I login whit Windows Authentication and it works fine, but as I need this new empty database for ASP script on my localhost ISS, I dont know what to enter for Username and Password as SQL Server Authentication.
Ex. here is this connection string where I need to enter U/P but what to enter if I use Windows Authentication?
strCon = "Provider=SQLOLEDB;Connection Timeout=90;Server=AMDSQLEXPRESS;User ID=???????;Password=???????;Database=test_database;"
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)
AND DR.languageid = isnull(@inlanguageid,null)
AND DR.[ID]= @ID
)
go
set ansi_nulls on
Hey Guys:
--- Not sure if this should be moved to webforms forum, or if it belongs here ---
Alright, I have been dealing with this issue for a few days now, and have found a few solutions but they all seem to throw different errors so I figured I'd ask here.
What i am trying to do is have a webform where user enter data, and have the data passed across forms, then displayed and inserted into a database on another form. THe first for has an asp:rangevalidator control dymamicly built so I cannot simply take of the tags and use the old style.
Eventually the user will be directed to a paypal form, and upon successful completion be redirected to the page with the insert command within it, but for now, passing it to a second page for review, then inserting it will work.
I am not sure how to accomplish this, a tutorial or a code example would be great!! I have though about panels, creating public objects, etc, but all the solutions I have found have one issue or another when I attempt to create them.
I'm using asp.net 1.1, VB.net and SQL server.
Thanks,
Brian Sierakowski
Hi,
Here's my problem, i need to create a task that reads a folder looking for new files, if the folder contains new files, the task should read the files, extract the data and insert it into a database. I read something about the Bulk Insert Task, but i didn't understand it very well.
If someone can provide me code example or a more detail explanation i would be very grateful.
Hi all--I am writing a DTS package looking to back up all databases in sequence from a specific instance of SQL Server. I am calling CDOSYS in a stored procedure from support.microsoft.com to send email upon failure. I have two types of SQL tasks I am writing into the DTS package:
1. backup database <database> to disk = '<drive>:<path>.bak' with init
2. Upon failure of a particular database to back up to file, execute the following SQL task:
declare @srvname varchar(128),
@db_name varchar(128),
@msg nvarchar(4000)
SELECT @srvname = @@servername
select @db_name = db_name()
set @msg = 'Hi--check your database backups. The ' + @db_name + ' database backup on ' + @srvname + ' has failed.
Thanks--SQL Server';
SELECT @srvname, @db_name, @msg
(Many thanks to Whitney Weaver and SQL_Menace for help with sections of this code)
Upon success of #1 and/or #2, go on to the next database, repeating cycle of the SQL tasks above for the next database in the task. For example, this logic goes like:
1. Back up master database; if fails, send email in SQL task; if either task is successful, goto database #2;
2. Back up model database; ...<etc>.
My problem is the current database set in @db_name. I apparently need to reset this variable for each database that gets backed up, and I can't seem to get these set as values to be passed from SQL Task #1 to SQL Task #2. Any suggestions on how I might achieve this?
- Jonathan
I am considering not to allow null values in the database.
what are pros and cons ?
In my database, in a few tables there are NULL values in some of the columns. This is okay, but I need to know how to query for nulls. For example I tried the following query but it did not work:
select * from Employee where DateOfBirth =NULL
This did not work so I also tried the following:
select * from Employee where DateOfBirth ='NULL'
Neither of these worked. Can someone help me out?
I have a problem I 'get stuck on it. i hope someone can help me.
I have a SQLServer table with an ID-field with a primary key and identity on it, and a couple of other fields with defaultvalue "" and NOT nullable
When i like to update an record in an formview of ASP 2.0 and fill in all fields everything is updated and everything goes fine
but
when I leave one field blank then I get the message 'can not enter null value in column X'
even when I place in the Updateparameter in my code
<asp:Parameter Name="Name" DefaultValue="" /> ASP tries to update an Null value
when i place an space as default value like
<asp:Parameter Name="Name" DefaultValue=" " />
everything goes fine exept there is an space in my database.
How can I update my record, and leave some textboxes emtpy AND where my fields are NOT nullable
I'm getting desparate of this.
make my fields nullable is not an option because this is a 'customerswish'
Please help
I closed my db connection and now I guess I'm supposed to set it to null...how do I do that? I've tried a few ways without success.
Thanks!
Jamie
Hi
I want to know how do we store null in the database
i know Null is unkown value
but it has to be something so the SQL server can know its null ( computer only knows 0s and 1s )
is it pointers and null does not have a pointer?
or do we store something physically?
an example : we have string(varchar) column that has this value in it "Joey Tribbiani" that means in the hard disk we will see 14 bytes "Joey Tribbiani" in there, if we changed the value to "Monika" the 14 bytes will be replaced by 5 bytes "Monika", if we changed to empty strike then we will have 0 bytes ""
now if changed it to become NULL what is going to happen to the hard disk, what is going to be in there physically??
may anyone help me in this?
many thanks
hi guys. i'm using vb.net with vs 2003 and MSSQL Managment Studio Express as my database server.
i want to insert null value into database, so i use System.DBNull.Value
but it doesn't show NULL, but a empty field. I tried System.DBNull.Value.ToString, it gives me same result.
what can i do to have NULL in that field?
thanks for any advise, i would appreciate it very much.
I am using a script component to retrieve some values from a server. This script component using Script task which uses VB.NET code. I have tested the VB.NET code and it returns a non null value for a string field 'sentence'. The 'sentence' feild is then passed on to an OLE DB Command transformation to be stored into the database along with a couple of other feilds.
The OLE DB Command transformation uses a stored procedure to store these feilds into the database. But when I check my table in the database, all other feilds are stored properly other than the 'sentence' feild which is null.
I am wondering what could be causingthis problem.
Thanks
Hi there,
I have a fairly generic question regarding database design.
I am working on my first database using SQL Express.
I am testing the database by inserting records into the pre defined tables.
Sometimes I forget to input text into a non null field. When
this happens it displays an error and then skips a few rows
which makes my row numbering messy. For example say I have
Row 1, Row 2 Row 3 all nicely formatted but on Row 4 I make a mistake
this row then disapears and their is gap between 3 and 5 where 4 was.
Although I am just testing, I was wondering what happens in a real
scenario if an inexperienced data input person makes a few mistakes it
makes the database numbering systems look bad. In this case
is it common to make most fields NULL to allow for admin errors??
I am currently using the following code to populate fields in a form EditUserNotes.Text = EditUserReader.GetString(2); which works just fine (the datatype in the database is 'text') as long as the data stored in the database is not null. If the data is null, I get the error: Data is Null. This method or property cannot be called on Null values. which is really annoying as there are times when the data stored in the database is legitimately NULLI can use the following code to fix the problem, but it seems less elegant EditUserNotes.Text = EditUserReader.GetValue(2).ToString() is there really a difference between the GetString and the GetValue(x).ToString() methods or are they interchangeable?
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