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
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.
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.
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.
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.
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.
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.
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.
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...
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?