Sql updating identity column
Therefore, two statements are in the same scope if they are in the same stored procedure, function, or batch” Now I click the Save (the disk sign) button and I see that the Cust Ids are updated to 9,10,11. I would expect to get 2,3,4; someone may beat me and add some rows before me.
You can control the column's first and subsequent values, by specifying those values when you create the column.In summary, SQL server or any database supporting batching operation has a reliable way to retrieve the identity value through the usage of the SCOPE_IDENTITY function.Visual Studio Data Tool provides the auto generated Insert command that leverages this support with the “Refresh the data table” option turn on by default.This is because MS Access database and SQL CE do not support batching SQL statements and therefore cannot use the SCOPE_IDENTITY function.The build-in refresh the data table option is not available for these databases.Cust Id is defined as primary key and an identity column.
Identity Seed and Identity Increment are set as 1 by default as shown in Figure 1 below.
Notice the use of the SCOPE_IDENTITY function, which is defined so in “SCOPE_IDENTITY (Transact-SQL) Returns the last identity value inserted into an identity column in the same scope.
A scope is a module: a stored procedure, trigger, function, or batch.
While in your client application, you can insert a new row into a corresponding ADO.
NET Data Table (Data Table can be seen as the in memory cache of the data table in the database, I will use Data Table as the example in this post).
Another benefit is it looks like unreal so users will know that it is just a temporary placeholder value.