• Auto Generated Primary Key Sql Example
• Sql Primary Key Name

Re: How To Auto Increment Alphanumeric Primary Key In sql server 2008

1. Mar 24, 2020  Auto increment attribute when specified on a column with a numeric data types, generates numbers sequentially whenever a new row is added into the database. The Auto increment is commonly used to generate primary keys. The defined data type on the Auto increment should be large enough to accommodate many records.
2. I am designing a table and I have decided to create an auto-generated primary key value as opposed to creating my own scheme or using natural keys. I see that SQL Server offers globally unique identifiers (GUIDs) as well as identities to create these valu.
3. For the previous few months, I found 3 to 4 questions related to Auto-incremented ID with the VARCHAR / NVARCAHAR data type in SQL Server. So I decided to write an article on that, it might help people who are looking for a solution of this. Problem statement SQL Server provides functionality called Auto Incremented column.
4. By convention, non-composite primary keys of type short, int, long, or Guid are set up to have values generated for inserted entities, if a value isn't provided by the application. Your database provider typically takes care of the necessary configuration; for example, a numeric primary key in SQL Server is automatically set up to be an.

May 29, 2012 Jamie King of Neumont University demonstrating how auto-generated primary key values behave with INSERT. SQL Primary Keys - Auto-Generating With Identity Columns. Primary Key and Auto. Create Table with Primary Key autoincrement Identity function. To create a table with Primary Key autoincrement you need to use identity function like in the below example. Create Table with Primary Key autoincrement. USE tempdb; GO create table Researchgroups( id int identity not null primary key, name varchar(500) not null). AUTO INCREMENT Field. Auto-increment allows a unique number to be generated automatically when a new record is inserted into a table. Often this is the primary key field that we would like to be created automatically every time a new record is inserted.

Jul 12, 2013 12:52 AMRagavanBLINK

Auto Generated Primary Key Sql Example

Hi Manish,

try like this sample,

Personal detail:

create table personaldetail(id bigint identity primary key,pid nvarchar(20) unique,name nvarchar(25),addres nvarchar(100))

Occupation:

create table occupation(id bigint identity primary key,pid nvarchar(20) references personaldetail(pid),occupation nvarchar(25),dept nvarchar(25))

then generate the pid at code behind like,

public string generate_ID(){

int id=0;

string pid;

Sql Primary Key Name

string pidquery = 'select top 1 SUBSTRING(pid,4,len(piid))as pid from personal detail order by pid desc';

// here 4 char denotes number after prefix string('HUA')

SqlCommand scmd = new SqlCommand(pidquery, con);
SqlDataAdapter adapter = new SqlDataAdapter(pidquery, con);
DataTable restable = new DataTable();
adapter.Fill(restable);
if (restable.Rows.Count > 0)
{
SqlDataReader reader = scmd.ExecuteReader();
reader.Read();
id= Convert.ToInt32(reader['pid']);
id= id+ 1;
pid = 'HUA' + Convert.ToString(id);
}
else // its for if no data in db
{
id= 1;
pid = 'HUA' + Convert.ToString(jid);
}

return pid;

}

after got id:

insert into both tables like:

1. insert into personaldetail('+pid+','+name+','+addr+')

2.insert into occupation('+pid+','+occupation+','+dept+')

please let me know the status..

Thank you,