Can someone please tell me the best practices for checking the primary key field before inserting a record into my database?
As an example I have created an asp.net page using VB with an SQL server database. The web page will just insert two fields into a table (Name & Surname into the Names table). The primary key or the Names table is "Name". When I click the Submit button I would like to check to ensure there is not a duplicate primary key. If there is return a user friendly message i.e. A record already exisits, if there no duplicate, add the record.
I guess I could use try, catch within the .APSX page or would a stored procedure be better?
hii I have to insert some data into a table from the webpage. For that I need to know the last occurred value in the primary key and increment this by one and then insert the new record into the table. I am working with SQL Server 2005. I am coding in VB and ASP.NET 2.0. How will I go about this?? Is there some easy way for me to knw the last value of the primary key n then insert the record. It would be great if I get the idea more clear with the help of some code... Thanks
Is that possible to restrict inserting the record if record already exist in the table.
Scenario: query should be
We are inserting a bulk information of data, it should not insert the row if it already exist in the table. excluding that it should insert the other rows.
Consider this scenario. I have two database in the sql server and consider that i have a query which has 4 tables inner joined. When i execute the query in the database1 , the query is returning rows, But when i execute the same query in the database2, the query is not retuning rows . I know that the no rows are returned because of missing data in the database2. But have no idea how to trace what values are missing in the database2. Please note the tables is having a huge list of records by which manually comparison is painfull. Please consider i dont have any background idea of the values in the tables but just using it. Any help would be appericated.
I have created a formview which I among other things uses to insert new values into a database. What I want to check is if the primary key which is put into the form already exists in the db. If it is I want to get a message to my web page, if not the data can be inserted.
How can I do this?
And if the only way to control this is to create a stored procedure. How do I write such a proc?
I have a webpage where users can connect with other users by sending them a request. Sending the request just puts a row in a connect table that contains the users id, the targetusers id, a requesteddate, an accepted date and a disconnectdate (for the original requester to end the connection and a reject bit the the target can reject the request. Hoever I need to check to assure that the connect does nt already exist either as pending (requestdate is not null and accept date is null) or both dates are not null (connection already complete.).
ALTER PROCEDURE [dbo].[requestConnect] -- Add the parameters for the stored procedure here @requestor int, @requested int AS BEGIN -- SET NOCOUNT ON added to prevent extra result sets from interfering with SELECT statements.
OK i have script which is to be run on several databases. Within this script there are commands to create a primary key on a specific table. Can anyone tell me if it is possible to check if a specific primary key exists on a table?
I developed a console application that will continually check a messagequeue to watch for any incoming data that needs to be inserted into MSSQL database.What would be a low-cost method I could use inside this consoleapplication to make sure the MS SQL database is operational before Iperform the insert?
I want to insert a new record into my db in asp.net. Im programming in vb and using an sql server database. i know this is a begginers question but that's exactly what i am. Thanks in advance
Hi Friends, I am Ravi, I need a help. My case is like.. i need to upload data from csv file into sql server 2005 data table. but before that I need to check integrity of data for example: let us say csv data is like ISD CODE,STATE,NAME,QUALIFICATION 91,AP,KIRAN,MCA 01,MC,MIKE,MS
here i have to check that, wether there is an entry in ISD codes table for 91 and 01 (india and us) similarly AP , MC (Andhra Pradesh and MISSICippi) please suggest me a nice approach, no of records in ISD codes and States will 350-450 records.
hey everyone,I have created two tables in an sql server database. I have a check box in the table 1, and when it is checked, I want to insert that particular record into table 2. (By the way I am using a datagrid) The problem is when I click the check on the particular record I want inserted, and click update, the system copies the record twice instead of once. When I look into table 2, I end up having two of the same records. Can anyone help me.
I am simply trying to use SQLCommand in .net to insert a record into a SQL Server 2005 table. There are 2 fields being pulled from a user input for that could have no values selected. In this case I want to insert a null value into the record. I get an error that Null is no longer supported and that I should use System.DBNull, but that can't be used as an expression. How do I do this? Thank you in advance.
Hi All, i am new to programming, in my application i want to insert a record in sql server database using Ado.net for that i used SqlConnection cn=new SqlConnection(ConfigurationManager.ConnectionStrings["constring"].ConnectionString); SqlCommand cmd; protected void btnInsert_Click(object sender, EventArgs e) { try { cmd = new SqlCommand("Insert into DeptInfo(deptid,deptname)values(" + TextBox1.Text + ",'" + TextBox2.Text + "')", cn); SqlDataAdapter da = new SqlDataAdapter(cmd); cn.Open(); cmd.ExecuteNonQuery(); cn.Close(); TextBox1.Text = ""; TextBox2.Text = ""; } catch(Exception ex) { }} But my requirement is when ever the Insert command is successfull it has to display some alert message(using java script) saying "RECORD INSERTED SUCCESSFULLY" if Record insertion fails it should display some alert message "INSERTING NEW RECORD FAILED" . Any help will be greatly appreciated Thanks,Vision.
i am running a query from one of my asp.net pages. I then want the results which will be around 20 - 30 records to be inserted to a new table. How do I do this?
I get the records from my query but how would i insert more than one record to a new table?
Is it possible to have sql server automatically record date and time (in a designated field)when a record is created in the db? This may seam basic but it has caused me a lot of grief.
Hello,I created the following SQL script to check if a record exists:IF (EXISTS (SELECT LevelName FROM dbo.by27_Levels WHERE LOWER(@LevelName) = LOWER(LevelName))) Return (1)ELSE Return (0)And I also found in a web page another solution:IF EXISTS(SELECT 1 FROM TABLENAME WHERE LevelName=@LevelName) SELECT 1ELSE SELECT 0- Which approach should I use?- Why "SELECT 1 FROM"?- And when should I use SELECT or RETURN?All I need is to know if the record exists ... nothing else.I will use this procedure on an ASP.NET 2.0 / C# web site.I am not sure if this important but anyway ...Thank You,Miguel
Hi, I was wondering if someone can help. In vb.net what is the best way to check if a record exists if you are using an sql data reader? For my application I need to display a button control (make it visible on the page) if a record is available after executing my sql select statement. cheers Mark :)
Ok I know this might not be the most accurate place to post this but I know someone here has an answer for me on it.I need to get the product_ID of the new record that is created by this insert statement INSERTINTO products ( class_ID,category_ID,product_name,product_desc,product_image,product_dimension,product_o1,product_o2,product_o3,product_ac,product_ph,product_photo ) SELECT class_ID,category_ID,product_name,product_desc,product_image,product_dimension,product_o1,product_o2,product_o3,product_ac,product_ph,product_photo FROM productsWHERE product_ID = @productID
Hi I have a table in sql server with a numeric field as Primary Key. When i insert a new record i need that primary key increments automatic (like access auto increment) because i want avoid the possibility of duplicate Primary Keys. Is that possible? Thank you
I'm performing an insert on a table that has a relationship, but I also want to update the other table that has a foreign key relationship. How do I go about this? Thanks :)
I can't seem to get this work. I'm using SQL2005 I want to check if a record exists before entering it. I just can't figure out how to check it before hand. Thanks in advance. Protected Sub BTNCreateProdIDandName_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles BTNCreateProdIDandName.Click ' Define data objects Dim conn As SqlConnection Dim comm As SqlCommand
' Reads the connection string from Web.config Dim connectionString As String = ConfigurationManager.ConnectionStrings("HbAdminMaintenance").ConnectionString ' Initialize connection conn = New SqlConnection(connectionString)
' Check to see if the record exists If comm = New SqlCommand("EXISTS (SELECT (BuilderID, OptionNO FROM optionlist WHERE (BuilderID = @BuilderID) AND (OptionNO = @OptionNO)", conn)
Then 'if the record is exists display this message. LBerror.Text = "This item already exists in your Option List." Else
'If the record does not exist, add it. FYI - This part works fine by itself. comm = New SqlCommand("INSERT INTO [OptionList] ([BuilderID], [OptionNO], [OptionName]) VALUES (@BuilderID, @OptionNO, @OptionName)", conn)
I am trying to insert a record into a sql server table from a textbox in a form but am getting this error The name "textbox1value" is not permitted in this context. Valid expressions are constants, constant expressions, and (in some contexts) variables. Column names are not permitted. 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: The name "textbox1value" is not permitted in this context. Valid expressions are constants, constant expressions, and (in some contexts) variables. Column names are not permitted.Source Error:
Line 33: dim command1 as sqlcommand=new sqlcommand(q1,connection1) Line 34: command1.connection.open() Line 35: command1.executenonquery() Line 36: command1.connection.close() Line 37: end sub This code is right below. The sub called a() is the one with the problem. <html> <head> <title> </title> <script language="vb" runat="server"> sub page_load(sender as object, e as eventargs) if not page.ispostback then binddata1() end if end sub sub binddata1() dim connection1 as new sqlconnection("server=111.111.11.11;uid=aa;pwd=bb;database=cc") const q as string="select dxid,code from tbltest where date_del is null order by code" dim command1 as new sqlcommand(q,connection1) dim dataadapter1 as new sqldataadapter() dataadapter1.selectcommand=command1 dim dataset1 as new dataset() dataadapter1.fill(dataset1) grid1.datasource=dataset1 grid1.databind() end sub sub a(sender as object,e as eventargs)' response.write(textbox1.text) dim textbox1value as string textbox1value=textbox1.text dim connection1 as sqlconnection=new sqlconnection("server=111.111.11.11;uid=aa;pwd=bb;database=cc") const q1 as string="insert into tbltest(code,descriptor) values (textbox1value,'test')" dim command1 as sqlcommand=new sqlcommand(q1,connection1) command1.connection.open() command1.executenonquery() command1.connection.close() end sub </script> </head> <body> <form runat="server"> <asp:textbox id="textbox1" runat="server" /> <asp:button id="button1" text="click" onclick="a" runat="server" /> <asp:datagrid id="grid1" runat="server" /> </form> </body></html> What am I doing wrong? How can I get the insert query to put the value of textbox1.text into the column called code? Sorry if I am not explaining things clearly. This is like a foreign language to me.
Is there a way to test the integrity of a record which is about to be inserted in a database before doing so? The goal is to prevent all kinds of runtime errors that will occur after the insertion, if the record breaks any of the database rules. The solution should apply to a VBScript used inside a DTS package.
SELECTIndustry, 100.0 * SUM(CASE when ceoischairman = 'yes' then 1 else 0 end) / COUNT(DISTINCT CompID) AS [YesPercent], 100.0 * SUM(CASE when ceoischairman = 'no' then 1 else 0 end) / COUNT(DISTINCT CompID) AS [NoPercent] FROMTCompanies GROUP BYIndustry ORDER BYIndustry
This code above is working as I need it but I need to insert some additional functionality. Thanks
I need to add something like this:
IF YesPercent > NoPercent UPDATE tableX SET CEOIsChairman='Yes' WHERE Industry='<the industry value being evaluated>' Else If NoPercent > YesPercent UPDATE tableX SET CEOIsChairman='No' WHERE Industry='<the industry value being evaluated>' Else UPDATE tableX SET CEOIsChairman='Equal' WHERE Industry='<the industry value being evaluated>' End
I'm using Microsoft SQL Server Management Studio with SQL Server 2005 (SP2).
I have not had much experience with t-SQL and iterative logic implementation through SQL, therefore I think my problem is fairly basic for most of the pros here.
Here it goes...
I have two tables at hand, TestTab1 and TestTab2.
TestTab1 contains two attributes (columns) namely account_name (nvarchar(50)) and entry_count (int). For all rows in TestTab1, account_name is unique, i.e. for each account_name there is only 1 row in TestTab1. This is my source table.
TestTab2 contains one attribute namely account_name (nvarchar(50)). This table is empty and is my destination table.
I need to insert X entries (rows) for each account_name into TestTab2 where X is the int value in entry_count againt each account_name in TestTab1.
In other words, I need to insert account_name into TestTab2 as many times as the number in entry_count indicates.
I tried reading through the documentation but the help was not friendly enough for me to understand how to implement this.
How do i insert a carriage return at the end of an record that's being sent to a flat file? Currently, I get one long string, and would like for SSIS to put carriage returns at the end of each line.
