I have created small database prods. I have created one table Products. I have given columns like productid, productname, price. after creating table. I got an idea to add identity to productid ie., auto increment. how to add identity to existing column.
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Possible Duplicate: How to change programmatically non-identity column to identity one? I want to set a column as identity as I have already created this column in a table. What syntax do I need?
View 4 RepliesResetting IDENTITY column to a new valueDuring application development we always entry some test data also our tester test with test data and as a result if the table contains IDENTITY columns( specially ID column) which incremented to the number of data already entered.
However, when the application goes running with real data to the client and the client want his ID values from starting 1, then we need to RESEED the value of the IDENTITY column of the table after clearing all data. This can be done as bellows:
DBCC CHECKIDENT (TableName, RESEED, 0)
However, can be reseed with any values instead of zero(0) in the above statement.
I have an identity column that increment by 1 on every insert. I have deleted all the rows using delete query but the identity coulumn is still not reseting to zero, how do i reset it, as it was when the table was first created.
View 4 RepliesI have one table it's contain multiple columns and one of them is
[Call_Ref_No] [numeric](18, 0) IDENTITY(1,1) NOT NULL
In this column I am facing issue is some time its missing the identity value... For example
1
2
3
5
6
8
9
Here in this example 4 and 7 is missing...I could not able to find these two reference in my table so what I can do? How I can stop this occurrence.
I am trying to get the identity column on which the record is inserted but i couldn't using stored procedure
see
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My Code Using ASP.NET C# i am trying to display the identity in textbox
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The wierd thing is this was working fine and then it just started throwing this error,
"Cannot insert explicit value for identity column in table 'Reports' when IDENTITY_INSERT is set to OFF."
Here is the code:
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I am in a serious trouble right now, i wanted to know that how to write a query in LINQ to SQL to retrieve identity column's current value before inserting any value.
I need this cos i m building a windows app n i need to display this value before inserting a record. I have tried DataContext.ExecuteCommand('DBCC CHECKIDENT (Tablename)') but it returns the number of rows modified.
I have a table with several columns i created,
How can i add a new column and specify its data type now? i using sql server and Gridview.
I tried to add one using GridView but it shows me columns called edit delete something is not like my bound fields i created early.
How to handle this error
"An explicit value for the identity column in table 'UserActivation' can only be specified when a column list is used and IDENTITY_INSERT is ON."
I am developing a asp.net application and i am using SQL Server 2008. I took a IDENTITY column as Record_ID for detail table where i will have trillions of records per year. So just want to ask whats the largest number record id (identity) column can hold and in ASP.NET which data type i should use to handle record id as i am using this id as a reference to update the table data. I don't want to end up being trapped some day.
View 1 RepliesI have a table converted from Access and the identity keys were lost. Now I need to make the id column the identity column, but it already has a lot of null values, how do I auto generate integer values for the null rows? The row ids are incremented, so if there is a way to auto increment the ids
View 7 RepliesI have made a AutoNumber Identity Column and iset Identity Specification property to "Yes" to keep the Identity Increment and Identity Seed values as default ones.
But when i use a datagriview and use a table adapter the column donīt appear on the datagridview.
Me.AUTONUMER2TableAdapter1.Fill(Me.Teste1DataSet3.AUTONUMER2)
So how to show to a AutoNumber Identity Column on a datagriview ?
I have error:
Cannot insert explicit value for identity column in table 'UserDetails' when IDENTITY_INSERT is set to OFF.
I'm trying to insert a record through a BLL (Business Logic Layer) class with an 'Insert' button attached to the FooterTemplate of a GridView2. My code:
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BLL layer code:
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The field 'idUser' is autoincremented. When I use SqlDataSource with a DetailsView, add option it adds a record and autoincrements the 'isUser'.
I am facing a problem here. I have a column where the value is equivalent to my identity column's value. For an example, I have a column A store is "ABC0001" and the 0001 is came from a column called Column B which identity on. when a new record inserted and Column B is next identity number and Column A value is "ABC" and add number from Column B.
View 4 RepliesI got this code which bind a datatable to a grid view. After the binding, i wanted to add additional column to the right of the grid, how can I do that? My codes below failed to do it.
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The Header value of "ID1" is shown, but the cells only shows a '-' instead of 'New Column' sign.
I've been self teaching SQL and asp.net and i'm a little stuck. I have a stored proc for the insert and then in my Insert inside my class it's not returning the ID after the insert as I am receiving an error message that NULL value has cannot be inserted. I want to add default values to a seperate table after the insert. I will provide my code below, if anyone can help me why the value is not going across?
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I have been searching on here for many hours and read many posts but for some reason I am being slow and cannot figure this out. I am writing a record and need to get the identity field back. I have tried many combinations based on what I have read but the below code is where I am sitting at now. it has appdatasource.ExecuteScalar() underlined and the error says 'ExecuteScalar' is not a member of 'System.Web.UI.WebControls.SQLDataSource'. I would be very grateful if someone could point out what I am missing to get this to work.
Protected Sub SubmitApp_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles SubmitApp.Click
Dim appdatasource As New SqlDataSource
appdatasource.ConnectionString = ConfigurationManager.ConnectionStrings("ConnectionString1").ToString
appdatasource.InsertCommandType = SqlDataSourceCommandType.Text
appdatasource.InsertCommand = "INSERT INTO APPLICATION (FirstName,MiddleName,LastName,AcceptTerms,IPv4Address,DateInserted) VALUES (@FirstName,@MiddleName,@LastName,@IPv4Address,@DateInserted);select @@SCOPE_IDENTITY"
appdatasource.InsertParameters.Add("FirstName", fname.Text)
appdatasource.InsertParameters.Add("MiddleName", minit.Text)
appdatasource.InsertParameters.Add("LastName", lname.Text)
appdatasource.InsertParameters.Add("DateInserted", DateTime.Now())
appdatasource.InsertParameters.Add("IPv4Address", Request.UserHostAddress.ToString)
Dim appid As Integer = appdatasource.ExecuteScalar()
End Sub
I'm trying to insert data into two tables that are related within a store procedure. After the first insert I want to get the id of the inserted row to use as a parameter during the insertion of data in the other table. I'm sure this is a common task, and I have looked into things like scope_identity(), @@identity and ident_current. However I'm not sure exactly how to use the id as a parameter.My attempt now looks like:
DECLARE @RETURN_VALUE
INSERT INTO Table1(test_name) VALUES ('asdf')
@RETURN_VALUE = SCOPE_IDENTITY()
INSERT INTO Table2(test_name) VALUES(@RETURN_VALUE)
I was wondering how I could use user.identity in a where statement in sqldatasource to return results for a user profile. I already have a table that stores the username. Just need to return it's results.
View 5 RepliesThe scenario is that I wanna insert a record to the database via INSERT query and I need to user the identity number of this record in the INSERT query.
But I don't know how to achieve this.
Here is my table structure and code for your better understanding.
There are three columns in the Table: categoryID, categoryName, categoryPath. I need the path based on the categoryID which is an identity int column.
Now I used this code to do INSERT:
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I am not sure how to do this. I would like to merge the identity back into the dataset.
View 2 Replieshttp://forums.asp.net/p/1625331/4177299.aspx#4177299?Is+Identity%3f+in+table+definition+not+available
I tried all that was suggested in the above link..but I just cannot see the Identity data type option in the drop down. How can I set one field as a Identity data type if I dont see it?
I have a detailsView that I use for Insert. Once a record is Inserted, I need to get the new idenetity value.
Is there some function that grabs the inserted identity value? Or do I need to query it somehow?
By the way, the reason I'm doing this is the user is inserting a record into a 'general' list that is being applied to a 'specific' list - example, an employee can select a vendor from a list, but the vendor isn't listed so the employee adds the vendor in the vedor list and while the new vendor is inserted, the vendor info is also applied to the new order record.
I have an SQL Server table named "Fields" with an autoincrement identity column "FieldID" as the primary key, an nchar column "Phrase" that textbox entries are to be stored in from a web page, and another column that is defaulted to null. The following is the recommended example on how to use Scope_Identity() to get a newly inserted table row identity value:
//C#
string query = "Insert Into Categories (CategoryName) Values (@CategoryName);" +
"Select Scope_Identity()";
int ID;
string connect = @"Server=.SQLExpress;AttachDbFilename=|DataDirectory|Northwind.mdf;" +
"Database=Northwind;Trusted_Connection=Yes;";
using (SqlConnection conn = new SqlConnection(connect))
{
using (SqlCommand cmd = new SqlCommand(query, conn))
{
cmd.Parameters.AddWithValue("@CategoryName", Category.Text);
conn.Open();
ID = (int)cmd.ExecuteScalar();
}
}
Obviously, this example uses a Categories Table in a Northwind database, which I do not have. So I am confused by how to adapt this example for my application. The following is my data context:
DataClassesDataContext db = new DataClassesDataContext();
Could you explain how I can adapt the example for my "Fields" table in my "EFMDB" database?
