NULL S In Database
May 18, 2006I am considering not to allow null values in the database.
what are pros and cons ?
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Help Altering Database Table From NULL To NOT NULL
Jun 28, 2004I 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 RelatedTransact SQL :: Database Null Value And String Null
Oct 27, 2015We 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 .
CaseÂ
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) Â 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"?
Problem With Isnull. Need To Substitute Null If A Var Is Null And Compare It To Null And Return True
Sep 20, 2006Hey. 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
How To Query For NULL In A Database
May 31, 2007
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?
How To Store An Value In My Database Instead Of Null
Dec 14, 2005I 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
Set Database Connection To Null
Nov 11, 2007I 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
Pass NULL Value To Database
Feb 12, 2014I 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 Replies View RelatedHow Do We Store Null In The Database
Jul 12, 2007Hi
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
How To Insert Null Value Into Database?
Mar 13, 2007hi 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.
Null Entry In The Database
Jan 31, 2008
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
Database Tables And NULL Fields
Nov 17, 2006Hi 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??
Using SqlDataReader.GetString When Value In Database Might Be A NULL
Jun 8, 2007I 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?
View 3 Replies View RelatedSearching A Database Field For Null Value
Feb 27, 2008Hi,
I am building a website in ASP.net C# for a university project, and would like to search a table (Member) for a field (UserName) using a session variable Session["sUserName"]. If that field is null, then I would like to insert that session variable into the field to start to create a new user. However, I am getting errors saying that I am using invalid expression terms. My code is;
//Create the Command, passing in the SQL statement and the ConnectionString queryString = "SELECT UserName FROM Member WHERE (UserName = @myUsername); ";
SqlCommand cmd = new SqlCommand(queryString, sqlConn);cmd.Parameters.Add(new SqlParameter("@myUsername", Convert.ToString(Session["sUserName"])));
//If UserName is null, display confirmation, else display errorif (UserName == null) ;
{UserNameCheckLabel.Text = "Username okay";
String queryString = "INSERT INTO Member (UserName) VALUES(@myUsername); ";SqlCommand cmd = new SqlCommand(queryString, sqlConn); cmd.Parameters.Add(new SqlParameter("@myUsername", Convert.ToString(Session["sUserName"])));
}else;
{UserNameCheckLabel.Text = "That username is in use";
}
I have a feeling I should be checking the database for the UserName, but I'm not sure whether to put this in the SELECT statement part or as a method... I would be most grateful for any advice!
Many thanks,
Chima
Database Question: Primary Key Cannot Be Null!
Jun 16, 2008I am using SQL server. And, I have a database: imgID int (primary key)imgData image imgTitle vchar When I am going to perform insert command in my webpage, it pops out primary key cannot be null error! Isn't primary key automatically generated? Or, where should I define it?
View 2 Replies View RelatedPassing Null Date Value To Database
Oct 31, 2004how can i pass null value to database? date is not required field in my database. i can pass default date but i think default date is not good in my case as it is DOB of a customer.
View 19 Replies View RelatedDateTime Null In Sql Server Database
May 11, 2005Hi,
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();}
Dealing With Null On Database Lavel
Feb 22, 2005Hi
post a sample code
create table testNull(
a int not Null,
b varchar(5),
c varchar(5) )
insert into testNull (a,b,c) values(1,'Alex','test')
insert into testNull (a,b) values(2,'Alex2')
1. select * from testNull
-- return 2 rows
2. select * from testNull
where
a <> 3
and
b <> 'C1'
and
c <>'C2'
-- return ONLY 1 ROW !!!
3. select * from testNull
where
a <> 3
and
b <> 'C1'
and
isNull(c,'') <>'C2'
query 2 will retun only 1 row, because value of column c is Null
Question
Is any setting could be changed on db or server level to prevent errors with missing row in 2-nd query , or I have use isNull operator for every column acepting Null as value ?
Select Rows From Database Where Fields Are Null
Dec 30, 2006Hi, how do i do a select statement with asp.net to return a record if a field is null. I have the following code:
SqlCommand cmd = new SqlCommand("SELECT * FROM Categories WHERE ParentId = @ParentId", cn);.Parameters.Add("@ParentId", SqlDbType.Int).Value = parentId != null ? (object) parentId : DBNull.Value;cn.Open();
The variable parentId is a nullable int. However when i pass in a null value it doesn't return anything even though there are records in the database that have a null value for the ParentId field.
Appreciate if someone could tell me what i am doing wrong. Thanks
Form Passing NULL To Database Instead Of Variable
Apr 12, 2007Not sure what i'm doing wrong here. it seems to be sending nulls or no value to database in places where i want it to send the @headline and @entryhere's the .aspx code: <%@ Page Language="c#" MasterPageFile="~/MasterPage.master" AutoEventWireup="true" CodeFile="NewPost.aspx.cs" Inherits="NewPost" Title="Scribbler Insert" %> <asp:Content ID="PageBody" runat="server" ContentPlaceHolderID="PageBody" ><table border="0" width="700" > <tr> <td width="80" valign="top"> Subject: </td> <td width="620" valign="top"> <asp:TextBox ID="txtHeadline" runat="server" Width="400px"/> <asp:RequiredFieldValidator runat="server" ID="RequiredFieldValidator1" ControlToValidate="txtHeadline" ErrorMessage="Headline is required" Display="Dynamic" /> </td> </tr> <tr> <td width="80" valign="top"> Text: </td> <td width="620" valign="top"> <asp:TextBox ID="txtEntryText" runat="server" TextMode="MultiLine" Height="250px" Width="400px" /> <asp:RequiredFieldValidator runat="server" ID="RequiredFieldValidator2" ControlToValidate="txtEntryText" ErrorMessage="Text is required" Display="Dynamic" /> </td> </tr></table><asp:Button ID="btnPost" runat="server" Text="Post" OnClick="btnPost_Click" /><asp:Button ID="btnCancel" runat="server" PostBackUrl="~/Admin/Admin.aspx" Text="Cancel" /> <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:scribblerdbConnectionString %>" ProviderName="<%$ ConnectionStrings:scribblerdbConnectionString.ProviderName %>" InsertCommand="INSERT INTO entries_tbl (Headline, entry, PostedBy, PostedDate, PostedTime) VALUES (@Headline, @Entry, 'SteveP', '2007-12-12', '12:44');" > <InsertParameters> <asp:ControlParameter Name="Headline" ControlID="txtHeadline" PropertyName="Text" Type="String" /> <asp:ControlParameter Name="entry" ControlID="txtEntryText" PropertyName="Text" Type="String" /> </InsertParameters></asp:SqlDataSource></asp:Content>
View 2 Replies View RelatedStore A Null Value Into A Database Coming From A Form
Apr 27, 2007I have a form and a connectionString to a SQL database. If the textbox at the form is empty i want to store a null value there but when i pass this value as a parameter it brings the following error: Failed to convert parameter value from a String to a Int32..
cmd.Parameters("@Segundo_nombre").Value = txtSecondName.Text.ToString --> suposing is null it brings an Error.
cmd.Parameters.Add(Apellido)
How can i manage this? I want to store this value if it is null or not.
Also i don't know how to assign a null value to a variable. I tried with
v_flag = check_selection.check_string(v_idioma)
If v_flag = 1 Then 'la variable posee el texto Seleccione
v_idioma = DBNull.Value
but it's not working.
Thanks!!
Entering Null Into Blank Fields In The Database
May 1, 2005How can I enter NULL manually in one of the rows in Sql Server database. Those rows does not contain any data.
View 3 Replies View RelatedHow To Insert Null Values Into A DataBase Field
May 9, 2005I have a function that updates a table in sql server
If a field is left blank I want the database field set to Null. I use:sqlCmd.Parameter.Add("@somefield, someintvalue) to pass all my values to the database.
if someintvalue is null I want to set @somefield to dbnull
How can I do this? I get errors if I submit a null integer when there is a foreign key constraint. What is the best way to handle this? should I just make all parameters objects? so that I can set them to DBNull.Value?
Also on a side note, when you are populating fields from a datatable, is there a better way to set the values (i.e. of a textbox) than cheking for DBNull before assigning?
ANSI NULL DEFAULT Database Option
Nov 13, 2007Hi,I am using SQL Server 2005 32 bit version. Could any one clarify methe caption database option with some examples? I am quite confusedwith the explanation given in MSDN. Kindly help me.Thanks in Advance.Om Prakash
View 1 Replies View RelatedASP Returning Null Sized Field From MS SQL Database
Jul 20, 2005We currently have an SQL db running on a web server.One of these fields is a large(ish) amount of text data – up to 400characters – and has been cast variously as varchar, nchar and texttype to overcome a problem. The problem appears to be in retrievingthe data via ASP. I understand that ASP can handle string data of thissize so I am okay there.When the records are retrieved from the db, the data string length =0.I know the data is there because I have written a Delphi data managerwhich interrogates the db and shows all records and their contents.So if ASP can handle strings this size and the data is there, why do Iget a data length of zero bytes returned when I interrogate the recordset?Whichever way I cast this field I get the same result.I know the code is sound as it works locally through a MS SQL serveron my PS.Anyone have this problem or know what's causing it? I have logged asupport call with my hosting company, but they haven't replied as yetand I am stuck on an urgent project.Any suggestions?CheersGrant
View 1 Replies View RelatedHow To Pull Null (empty) Records From SQL Database
Dec 5, 2007
How to pull null (empty) records from SQL database,
what query am I suppose to use to get result
help me
thank you
maxs
How To Pass Null Value To The Database If A Form Field Is Empty?
May 31, 2004How 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
Problem With Adding A Date Field To A Database When It Is Null
Jun 21, 2005I am having problems adding a date field to a SQL Server Database from a form in ASP.Net. When I leave the date field blank, it automatically inserts Monday, January 01, 1900. I want it to be null when the expiration date is left blank. Can someone please help me with this? Here's my code for adding information from the table to the database: '--------------------------------------------- ' name: Button_Click() '--------------------------------------------- Sub Button_Click( s As Object, e As EventArgs ) Dim strConnect As String Dim objConnect As SQLConnection Dim strInsert As String Dim cmdInsert As SqlCommand
'Get connection string from Web.Config strConnect = ConfigurationSettings.AppSettings("ConnectionString")
objConnect = New SqlConnection(strConnect) strInsert = "Insert DomainName (ClientID, DomainName, Registrar, ExpirationDate ) Values ( @ClientID, @DomainName, @Registrar, @ExpirationDate )" cmdInsert = New SqlCommand( strInsert, objConnect) cmdInsert.Parameters.Add( "@ClientID", dropClient.SelectedItem.Value ) cmdInsert.Parameters.Add( "@DomainName", txtDomainName.Text ) cmdInsert.Parameters.Add( "@Registrar", txtRegistrar.Text ) cmdInsert.Parameters.Add( "@ExpirationDate", txtExpirationDate.Text )
objConnect.Open() cmdINsert.ExecuteNonQuery() objConnect.Close() 'Display the results "page" DisplayResults()
End Sub Here's the code for the form: <form id="frmDomainNames" method="post" runat="server" onSubmit="return InputIsValid()"> <div align="center"> <table border="0" cellpadding="2" cellspacing="2" width="50%" bgcolor="#330099"> <tr> <td height="37" colspan="2" align="center" valign="middle" bgcolor="#330099"><font color="white" size="5">Domain Name Information</font></td> <td> </td> </tr> <tr> <td height="42" align="right" valign="top" bgcolor="#e8e8e8"><font face="MS Sans Serif, Arial" size="2" color="#000000"><strong><nobr> Client's Name:</nobr></strong></font></td> <td colspan="2" valign="top" bgcolor="#e8e8e8"> <p> <asp:dropdownlist id="dropClient" runat="server" /> </p> </td> </tr> <tr> <td height="42" align="right" valign="top" bgcolor="#e8e8e8"><font face="MS Sans Serif, Arial" size="2" color="#000000"><strong><nobr> Domain Name:</nobr></strong></font></td> <td colspan="2" valign="top" bgcolor="#e8e8e8"> <p> <ASP:TextBox id="txtDomainName" runat="server" TextMode="SingleLine" Columns="30" /> </p> </td> <tr> <td height="42" align="right" valign="top" bgcolor="#e8e8e8"><font face="MS Sans Serif, Arial" size="2" color="#000000"><strong><nobr> Registrar:</nobr></strong></font></td> <td colspan="2" valign="top" bgcolor="#e8e8e8"> <p> <ASP:TextBox id="txtRegistrar" runat="server" TextMode="SingleLine" Columns="30" /> </p> </td> </tr> <tr> <td height="42" align="right" valign="top" bgcolor="#e8e8e8"><font face="MS Sans Serif, Arial" size="2" color="#000000"><strong><nobr> Expiration Date:</nobr></strong></font></td> <td colspan="2" valign="top" bgcolor="#e8e8e8"> <p> <ASP:TextBox id="txtExpirationDate" runat="server" TextMode="SingleLine" Columns="10" /> </p> </td> </tr>
<TR> <TD> </TD> <TD align="center"> <asp:Button Text="Submit" OnClick="Button_Click" Runat="Server" /> </TD> </TR> </table> </form> </div>
SQL XML :: Importing Data From XML Into Database And NULL Returning Results
Sep 16, 2015I have a xml file downloaded from webAPI which i want to import into my database.There are several sub childnodes and need to combine data between nodes.
<?xml version="1.0" encoding="UTF-8"?>
<classes type="array">
<class>
<class_id>3S</class_id>
<class_pk type="integer">3900</class_pk>
[code]....
Receiving System Error When Retrieving Database Record With Null Value
Sep 26, 2007I have some VB.NET code to retrieve data from an SQL Server database and display it. The code is as follows: -------------------------------------------------------------------------------------------------------
sw_calendar = calendarAdapter.GetEventByID(cid)
If sw_calendar.Rows.Count > 0 Then
lblStartDateText.Text = sw_calendar(0).eventStartDate
lblEndDateText.Text = sw_calendar(0).eventEndDate
lblTitleText.Text = sw_calendar(0).title
lblLocationText.Text = sw_calendar(0).location
lblDescriptionText.Text = sw_calendar(0).description
Else
lblStartDateText.Text = "*** Not Found ***"
lblEndDateText.Text = "*** Not Found ***"
lblTitleText.Text = "*** Not Found ***"
lblLocationText.Text = "*** Not Found ***"
lblDescriptionText.Text = "*** Not Found ***"
End If
-------------------------------------------------------------------------------------------------------
If all of the fields in the database has values, everything works ok. However, if the title, location or description fields have a null value, I receive the following error message:
Unable to cast object of type 'System.DBNull' to type 'System.String'.
I've tried a bunch of different things such as:
Adding ".ToString" to the database field,
Seeing if the value is null: If sw_calendar(0).description = system.DBnull.value...
...but either I get syntax errors in the code, or if the syntax is ok, I still get the above error message.
Can anyone help me with the code required to trap the null within the code example I've provided? I'm sure there are other, and better, ways to code this, but for now I'd really like to get it working as is, and then optimize the code once the application is working (...can you tell I have a tight deadline )
Thanks,
Brad
Howto Insert A Null DateTime Into A Sql Server 2005 Database
Apr 2, 2008I'm importing data form an Excel file to a Sql Server Database. Some of the data imported represents time as a double type so i convert the times into DateTime to be inserted into the database. The time values that aren't available in the Excel file are 0.. so what i want to do is insert null into the database for all the values that are 0 in the excel file... How do i do that based on this code i have so far:protected void ButtonImport_Click(object sender, EventArgs e){PanelUpload.Visible = false;PanelView.Visible = false;PanelImport.Visible = true;LabelImport.Text = "";OleDbCommand objCommand = new OleDbCommand();objCommand = ExcelConnection(); OleDbDataReader reader;reader = objCommand.ExecuteReader(); while (reader.Read()){DateTime? in_1 = null;DateTime? out_1 = null;DateTime? in_2 = null;DateTime? out_2 = null; int emp_id = Convert.ToInt32(reader["emp_id"]);DateTime date_entry = Convert.ToDateTime(reader["date_entry"]);if (Convert.ToDouble(reader["in_1"]) != 0)in_1 = ConvertDoubleToDateTime((double)reader["in_1"]);if (Convert.ToDouble(reader["out_1"]) != 0)out_1 = ConvertDoubleToDateTime((double)reader["out_1"]);if (Convert.ToDouble(reader["in_2"]) != 0)in_2 = ConvertDoubleToDateTime((double)reader["in_2"]);if (Convert.ToDouble(reader["out_2"]) != 0)out_2 = ConvertDoubleToDateTime((double)reader["out_2"]); ImportIntoAttendance(emp_id, date_entry, in_1, out_1, in_2, out_2);} reader.Close();}protected void ImportIntoAttendance(int emp_id, DateTime date_entry, DateTime? in_1, DateTime? out_1, DateTime? in_2, DateTime? out_2){ SqlDataSource AttendanceDataSource = new SqlDataSource();AttendanceDataSource.ConnectionString = ConfigurationManager.ConnectionStrings["SalariesConnectionString1"].ToString();AttendanceDataSource.InsertCommandType = SqlDataSourceCommandType.Text;AttendanceDataSource.InsertCommand = "INSERT INTO Attendance (emp_id, date_entry, in_1, out_1, in_2, out_2) " +"VALUES ('" + emp_id + "', '" + date_entry + "', '" + in_1 + "', '" + out_1 + "', " +"'" + in_2 + "', '" + out_2 + "')"; int rowsAffected = 0;try{rowsAffected = AttendanceDataSource.Insert();}catch(Exception ex){LabelImport.Text += "<font color=red>" + ex + "</font><br />";} }private DateTime ConvertDoubleToDateTime(double dbTime){string[] SplitTime = dbTime.ToString().Split('.');string hours = SplitTime[0];string minutes = String.Empty;string time = String.Empty; if (dbTime.ToString().IndexOf('.') != -1){if (SplitTime[1].Length >= 1){if (SplitTime[1].Length == 1)minutes = Convert.ToString(Convert.ToDouble(SplitTime[1]) * 10);else if (SplitTime[1].Length > 1)minutes = SplitTime[1];}}elseminutes = "00";time = hours + ":" + minutes;return Convert.ToDateTime(time);}
View 3 Replies View RelatedSQL Search :: DELETE Rows From All Tables In Database Where Column Name Is Geo And Value Is NULL
Nov 16, 2015I need to look at all tables in a database that has a column name of GEO
Then look for all values in each table where the GEO value is NULL and delete each of the records found...
Integration Services :: Empty String Is Showing As NULL Value In Database?
Oct 8, 2015In my source table, I have columns FirstName and LastName, both of datatype nvarchar. In my dataflow, I created two new derived columns mapped to these two columns. When pushing data to the source, I noticed that the FirstName column had a value of NULL while LastName was just an empty string (for rows that did not have any value).
My question is, why my source table column FirstName is showing a NULL value when the derived column datatype is string and the source is string? It should just be showing an empty string right?