auto-increment

I'm working on a project in which we may be using an Oracle 11g or an Oracle 12c database depending on what's available in various environments -- not ideal I know :( My project is a Spring Boot application and I'm using Liquibase to manage the database objects. My problem is that if I'm running on an Oracle 12c database, I'd like to take advantage of auto incrementing IDs while on Oracle 11g, I'll have to rely on a trigger and a sequence. Is there a way to detect if the current version of Oracle supports auto incrementing or do I have to look at the version number? The SQL that I currently

I would like to create a number like: 000000000001 to save to the database. I obviously cannot increment in this fashion (I don't think) in a database, so I'm looking for the most efficient method for pulling the previous number from the database and incrementing it by 1 to create the next record: 000000000002 and so on... If I store the first number manually, can I do some sort of manual typing to make it hold its number of zeros? I don't even know where to start. All the leading zeroes are just formatting. >>> "%012d" % ( 1, ) '000000000001' >>> "%012d" % ( 2, ) '000000000002' Use an

I want to create a primary key(auto-increment) which is start with A001000001 . Here A001 would be constant and 000001 would be iterate. I want rows like this: How can I do it using SQL query? For SQL Server (you didn't clearly specify which RDBMS you're using), my suggestion would be: add a INT IDENTITY column to your table - and quite frankly, I would make that column the primary key add a computed column to your table that does this "prefixing" Something like: CREATE TABLE dbo.YourTable ( ID INT IDENTITY(1,1) PRIMARY KEY CLUSTERED, EmpID AS 'A001' + RIGHT('0000000' + CAST(ID AS VARCHAR(10))

I've a datatable, with column A, B, C. I've set column A's "is identity" property to true, but I can't add any row to the table now. The code I'm trying is this: dsA.dtA row = dsA.dtA.NewdtARow(); row.B = 1; row.C = 2; dsA.dtA.Rows.Add(row); I'm getting NoNullAllowedException, but I don't understand why. Column A is PK as well. If I tried to set row.A = 5 (or any similiar) I'll get an error when I try to update the datatable saying "cannot insert explicit value for identity column in table when identity_insert is set to off" How can I solve this issue? It's frustrating. Raju Padhara try this.