Question

I have a following table

CREATE TABLE [dbo].[test_table]
(
 [ShoppingCartID] [int] IDENTITY(1,1) NOT NULL,
 [CartTimeoutInMinutes] [int] NOT NULL,
 [MaximumOrderLimitPerUser] [int] NOT NULL,
 [MaximumOrderLimitPerSession] [int] NOT NULL,
 CONSTRAINT [PK_test_table] PRIMARY KEY CLUSTERED
(
 [ShoppingCartID] ASC
)
WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
)
ON [PRIMARY]

GO

Sometimes Identity isn’t working, it’s start with 0 and sometimes its start with 1.

Thank you in advance.

Answer 1

How are you putting the data in there? If you are using regular INSERT it should start at 1. You can, however, bulk-insert into the table, or otherwise use identity-insert; in which case all bets are off:

create table test (
  id int not null identity(1,1), 
  name varchar(20) not null)
set identity_insert test on
insert test (id, name) values (0, 'abc')
insert test (id, name) values (27, 'def')
set identity_insert test off
select * from test

with output:

id          name
----------- --------------------
0           abc
27          def

Or is the problem relating to @@IDENTITY (in which case: use SCOPE_IDENTITY() instead).