Auto Increment Feature In Database?

Nov 2, 2010

I use SQL Server and when I create a new table I make a specific field an auto increment
primary key. The problem is some people told me making the field an auto increment for the primary key means when deleting any record (they don't care about the auto increment field number) the field increases so at some point - if the type of my field is integer for example - the range of integer will be consumed totally and i will be in trouble.

So they tell me not to use this feature any more.The best solution is making this through the code by getting the max of my primary key then if the value does not exist the max will be 1 other wise max + 1.Any suggestions about this problem? Can I use the auto increment feature?I want also to know the cases which are not preferable to use auto increment ..and the alternatives...note :: this question is general not specific to any DBMS , i wanna to know is this true also for DBMSs like

View 6 Replies


Similar Messages:

How To Auto Increment Field Value After Inserting To Database

Dec 6, 2010

i'm working on my first project on asp.net using c#.

I'm adding a couble of fields to database but i need the primary key of the master table to add it to sub table.

The database contains 2 tables :

Question Table :questionID(primary key and identity) , questionInText

Answer table : answerID , answer1,answer2 , questionID


code used to insert to db :

[code]....

View 1 Replies

SQL Server :: How To Auto Increment Alphanumeric Primary Key In Database Table

Sep 30, 2010

auto increment alphanumeric primary key(eg :ABC001) in sql server 2005 database table.

View 2 Replies

Auto Increment The Record Number?

Apr 29, 2010

i am using one text box in New registration page. when ever user clicks on New registration button, The text box of record number should be auto incremented.

View 12 Replies

C# - Inserting Row Into Table With Auto Increment Value?

Mar 23, 2011

I got a table PartsMedia where I can insert all the images related to a product. The table has the columns :

PartsMediaID , auto-increment
PartsNo
MediaLink
MediaDescription
CatalogCode
SortCode

I want to insert a complete row with automatic increment and the PartsNo should be the same as the PartsNo from the PartsMaster table.

The medialink should be the PartsNo + '-2.jpg'
The mediadescription is for example 'image2'
The CatalogCode should be 'catalog'
and the sorting code should be '0'

From The partsMaster table I Just need the PartNo So I can add this to the PartMedia Table. The PartNo is the foreign key in the PartMedia table.

The following I got so far but no luck

insert into dbo.PartsMedia (PartNo,MediaLink,MediaDescription,CatalogCode, SortCode)
values (dbo.PartsMaster.PartNo, PartsMaster.PartNo+'-2.jpg','image2', 'catalog','0')

View 3 Replies

ADO.NET :: Get Auto Increment Field After Inserting?

Dec 6, 2010

I'm adding a couble of fields to database but i need the primary key of the master table to add it to sub table.

The database contains 2 tables :

Question Table :questionID(primary key and identity) , questionInText

Answer table : answerID , answer1,answer2 , questionID

code used to insert to db :

[Code]....

questionID is auto increment.

The question is : How i get questionID after adding to database without using sql statment ?

View 1 Replies

Web Forms :: Auto Increment Of Primary Key Which Is Varchar?

Sep 21, 2010

i was given a form in which empid is varchar and i m supposed to auto increment it using a function and calling it ....i have never done this. plz help me out the way .

View 9 Replies

DataSource Controls :: Get Next Auto Increment Value From Table?

Apr 28, 2010

i have a question, suppose i have a table 'tblImage' which have 3 rows of data and my auto increment is not +1.

imageId imageName
1 a.gif
2 b.gif
4 c.gif

i want to query '2' using LINQ C# to the table in MS SQL and show the record which i have done easily BUT now i want to get the next auto incremented value to make Next button on the sane web form, which is in this case is '4' and i also want the previous imageId as well.

View 5 Replies

SQL Server :: How To Add A Fixed Value To Auto-increment Primary Key

Jan 1, 2011

If its posible I want to create a table with a primary key with auto-increment and a fixed value to differentiate the table from others tables

ex:

table 1 | table 2
ID | ID
----------|-----------
a1 |b1
a2 |b2
a3 |b3

View 6 Replies

SQL Server :: Auto Increment Column In SQL View

Oct 23, 2010

show me what is the syntax to add an increment column to Select Query? There will be additional column which goes 1,2,3 ... n.

View 3 Replies

SQL Server :: T-SQL Set Identity Seed On Auto Increment +1?

Nov 20, 2010

I have stored procedure where i am creating table and setting primary key how to set auto increment ?

set @sql =@sql +
'CONSTRAINT [PK_'+@Table+']
PRIMARY KEY CLUSTERED ([ID] ASC)) ON [PRIMARY]'

View 4 Replies

SQL Server :: Failing Insert When Using Auto Increment?

Aug 6, 2010

I am trying to set up an insert command in vb for sql server (not mysql). the following works fine as long as I manually enter a new ASSalesId and don't have this field auto increment. this field is set up a a primary key. I would like to just use auto increment on this field. but every time I set the field to auto increment the insert fails. if I just remove the reference to this field from the statement the insert fails.

Sub SQLDatabaseEntry()

View 4 Replies

Web Forms :: Auto Increment Using Stored Procedure

Oct 1, 2012

I want an auto increament using stored procedure how can I do this process. I want a reference number in this procedure ...

ALTER PROCEDURE [dbo].[Emp_Detail] (

@Name varchar(max),
@Emp_No varchar(50),
@Job_Title varchar (max),
@Nationality varchar(50),
@Administration varchar(50),

[Code] ....

View 1 Replies

DataSource Controls :: Getting An Auto-increment Field To Work In SQL

Feb 11, 2010

I'm trying to get an IDENTITY column to auto-increment with each new row inserted, so that the field (userid in this case) can be used as a unique identifier.

However, I'm getting this error:

[Code]....

My code looks like this:

[Code]....

I don't understand - if I have to explicitly insert something into my auto-increment column, how do I know what to insert? Isn't the point of an auto-increment column that it's... auto?

View 7 Replies

Forms Data Controls :: Auto Increment The Value Of Boundfield?

Jan 17, 2011

How can I autoincrement the value of a boundfield column in a gridview ?

View 2 Replies

Data Controls :: Insert Using GridView Into Auto Increment Field

Apr 1, 2013

I have a gridview with the serial no , I want to increment the serial no automatically when i insert new row

How can i ?

View 1 Replies

DataSource Controls :: Obtain Inserted Table Row Identity With An Auto Increment Key

Feb 18, 2010

I am using LINQ to store and retrieve data from tables with a clustered index key. However, I also need to know how to obtain an inserted table row identity with an auto-increment Primary key. The "Go To Definition" feature for my data context of dataClassesDataContext provides the following information:

[System.Data.Linq.Mapping.DatabaseAttribute(Name="EFMDB")]
public partial class DataClassesDataContext : System.Data.Linq.DataContext

I am asking for the C# code that is needed in a button click event handler that will insert a row of data in a table named "Fields". It only consists of an auto-incrementing primary key column (FieldID), a string column (Phrase) and a null defaulted variable column.

View 3 Replies

Forms Data Controls :: Hide Auto Increment Values In Chart Control?

Dec 14, 2010

i am using asp.net chart control, problem i am facing is that it automatically generates values in Y-Axis.

As you can see in image , values 0, 3 and 4 are automatically generated. how to hide these automatic generated values.

View 1 Replies

Forms - Disable Auto Logout Feature?

Oct 1, 2010

Im using forms authentication. I want my application should not logout the user automatically after sometime.

View 2 Replies

Stop The Auto Suggest Feature From Dropping Down Suggestions While Using Jquery Autocomplete?

Jan 13, 2011

How do you stop the auto suggest feature from dropping down suggestions while using jquery autocomplete. The auto suggest is dropping down over the autocomplete selections. Its terribly annoying. I've tried z-index. Nothing seems to stop it.

View 1 Replies

Web Forms :: Pull From Database And Create An Increment Value

Aug 30, 2010

What i want to do is read from a database where the catalog = 12 and then have a button on the page to add a new catalog named 13 so it takes the 12 and adds 1 to it so everytime they click the button they will get a message saying "are you sure you want to create anoter catalog?" and if yes then it executes.

View 5 Replies

Social Networking :: Get Latitude And Longitude Using GeoLocation Feature Of Browser And Save To Database

Jul 17, 2015

I am getting location by latitude and longitude from geolocation but location is not showing, If I pass latitude and longitude manually than its working good where is error in my code plz check my code.

<form id="form1" runat="server">
<script src="http://maps.google.com/maps/api/js?sensor=false">
</script>
<script type="text/javascript">
if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(function (position) {

[Code] .....

View 1 Replies

SQL Server :: DataBase Error When Attach An Auto-named Database For File?

Oct 6, 2010

I m trying to save files like pdf, word, excel etc... into sql express, but m getting this error in my web page:An attempt to attach an auto-named database for file C:Usersmalek.safaDocuments est vbSavingFileInDBSavingFileInDBApp_Dataaspnetdb.mdf failed. A database with the same name exists, or specified file cannot be opened, or it is located on UNC share.
m not getting errors inside my code, just this one appearing on the web page.

View 2 Replies

Auto Populating Textbox From Database?

Jan 13, 2010

I need to design a Textbox which fetches the values from database, as the user types in values in the Texbox. The fetched values should be displayed as autocomplete values... in a similar manner as google search box works...

View 5 Replies

Ajax Drop Down Auto Populate From Database?

Oct 13, 2010

i have a drop down list tied to a database called location.

what i hope to achieve is once a location is selected, my other drop down list will auto-populate a list of department in that location. how do i go about on connecting the two drop down list together so when location is changed, it connects to the appropriate row in the database?

View 1 Replies







Copyrights 2005-15 www.BigResource.com, All rights reserved