SQL Server :: Checking For Existing Record To Insert / Update?
Nov 8, 2010
I'm having trouble with an SQL statement. I want to have one statement that checks to see if it a record exists. If it does, then update it and if it doesnt then insert a new one in the server. Here is what I have so far:
I can't for the life of me remember how to do this and I'm sure someone will answer this pretty quickly. I need to insert or update a record based on if it exists so in the SP I need to do:
SELECT * FROM table1 WHERE LinkedID = @ID Then I need to check if any rows were returned and apply it to an if statement which is where my mind is blocked.
When processing many records starting from 10,000 System.OutOfMemoryExceptio get the error. There would be some way to handle this type of memory error ?.
ASP.Net SqlBulkCopy- Bulk Insert records and Update existing rows if record exists Exception: Out of Memory Exception C# and VB.Net
I receive data in .csv format. I have a some records on a table, so what I need to do is to check if the data I receive exist on the table of records that I need to match against.
If the record exist, then an email/sms should be sent to notify me that the records has been matched and then that record should be flaged that it has been tested so that I don't test it again as the incoming data are saved.
How can insert, Display ,update multiple records simultaneously through GridView in Asp.net.I have Button for insert, update . I want insert, update multiple records through a GridView in a single click.
I have written a script to write several values to an Access Database Table, but I need to ammend i so it checks for two values (Asset and LName) to see if they match if they do it updates the record if not it writes a new record, my script so far is as follows :
[Code]....
I'm just stuck as I can't work out the best way to do it,
After this and in the same procedure i want to update the inserted or the updated record which occared in the above code with the follwing update statment :
[Code]....
updating mark is completed successfully if the record is existed (Update Case) but if the record does not exist (new record) ... the update of the mark is not occured ..
when i want insert a record i see an error like this Can't perform Create, Update, or Delete operations on 'Table(MainMenuLink)' because it has no primary key. with this codes:
MyLinqDataClassesDataContext db = new MyLinqDataClassesDataContext(); MainMenuLink li = new MainMenuLink { Link = "www.tprogrammer.com", LinkSubject = "subject" }; db.MainMenuLinks.InsertOnSubmit(li); [code]....
I need to insert a record in table which is in remote server....I am using two connection strings for local and remote....both the servers are in same workgroup only...so am able to connect the both.The problem is am filling data of local table in on dataset1 and remote server table data in another dataset dataset2..Now whil inserting a record local an error occured like "This row already belongs to another table" after googlingI found like this like "Dataset.importrow()" instead of "dataset.add()" method...then there is no errors but the inserted record is not inserting in remote server database...
I have the query to retrieve selected record in textbox. How to use this query to update record: I want when I enter sumit in textbox1 and click submit button then the record with ID 1 will be updated to name sumit
Dim SQLData As New System.Data.SqlClient.SqlConnection("Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|Database.mdf;Integrated Security=True;User Instance=True") Dim cmdSelect As New System.Data.SqlClient.SqlCommand("SELECT TOP 1 Name FROM Table1 Order by Id DESC", SQLData) SQLData.Open() Dim dtrReader As System.Data.SqlClient.SqlDataReader = cmdSelect.ExecuteReader() If dtrReader.HasRows Then While dtrReader.Read() TextBox1.Text = dtrReader("Name") End While Else Response.Write("No customer found for the supplied ID.") End If dtrReader.Close() SQLData.Close()
I am creating a custom control and had a thought before I began. My control relies on the jQuery library to work. What if the user already has a version of the library already on their page. Will this effect anything? If my version is newer / older and my control will only work with that version of the libaray, what should I do?
I am designing a social networking site that has a "wall" feature like the others out there today. The database has an alerts table that stores some user action worthy of sharing with his friends. For example, when a user updates his status, all of his friends are notified. The below table shows two status updates from two unique users. The first (AlertId 689 and 690) is submitted by AccountId 53. Since he has one frinend - AccountId 57 - that row is added to the table so when this user logs on, he will see Account 53's update on his wall. In the same manner, the other user's status update has four rows because he has three friends.
[AlertId] [AccountId] [CreateDate] [Timestamp] [AlertTypeId] [IsHidden] [Body] 689 57 2010-08-10 0x0000000000018725 10 0 HTML 690 53 2010-08-10 0x0000000000018726 10 0 HTML 691 53 2010-08-10 0x000000000001872B 10 0 HTML 692 52 2010-08-10 0x000000000001872C 10 0 HTML 693 51 2010-08-10 0x000000000001872D 10 0 HTML 694 57 2010-08-10 0x000000000001872E 10 0 HTML
Now, a user can comment on any given item, in this case a statusupdate. When AddComment is submitted, we are using ObjectRecordId (which is the primary key of the alert being commented on) in order to identify which statusupdate is being commented on (fyi - the objectId tells us its a statusupdate):
public void AddComment(string comment) { if (_webContext != null) { var c = new Comment { Body = comment, CommentByAccountId = _webContext.CurrentUser.AccountId, CommentByUserName = _webContext.CurrentUser.UserName, CreateDate = DateTime.Now, SystemObjectId = _view.ObjectId, SystemObjectRecordId = _view.ObjectRecordId }; _commentRepository.SaveComment(c); } _view.ClearComments(); LoadComments(); }
Now, the problem is that when a user wants to comment on a friend's status update, he will be using the AlertId (or ObjectRecordId in the Comments table) corresponding to his account in the alerts table. The result is that comments are only viewable by the commenter and none of his friends:
Of course the solution to this is to do something similar to what I did in the alerts table - when somebody makes a comment, make a corresponding row for every friend in the comments table. But how do I access the AlertIds of all of my friend's status updates in the Alerts table and map them to the ObjectRecordId column in the comments table? Since I can only access the status updates corresponding to my account (and their corresponding alertids), I don't know what the alertids are for the same statusupdate in my friend's accounts.
i need to call multi dropdown for products that retrieve product name from microsoft sql and get the price as the product is been selected from the dropdown for total amount for the customer.Example is for customer to buy 6 product.The client is to enter the number of product purchase and the 6 dropdown appears as he click ok button.And as the clients select the product from the dropdown the price sum up together before saving into database.