Pervasive SQL reuses a deleted primary key - pervasive

Question

I came across a very odd behavior of PSQL (v11) recently:
If I create a table with an identity column, add some records and then delete the last row, this rows key will be reused!
create table "MyTable" (id identity not null, name varchar(50));
insert into "MyTable" (name) values ('Row 1');
insert into "MyTable" (name) values ('Row 2');
insert into "MyTable" (name) values ('Row 3');
select * from "MyTable"
so far so good
id name
=========== ============
1 Row 1
2 Row 2
3 Row 3
then when I delete "Row 3"
delete from "MyTable" where id = 3;
and add a new row
insert into "MyTable" (name) values ('Row 4');
I am surprised to get
id name
=========== ==============
1 Row 1
2 Row 2
!!! ---> 3 Row 4
Is there a way to change the server configuration to prevent this behavior. I would also be glad for any other suggestion to create a reliably unique integer in pervasive SQL.

Answer 1

As per the Autoincrement documentation (here), this seems to be expected behavior. Specifically, in the documentation, it says:
If you indicate that you want the database engine to assign the next
value by entering a zero (0) value in an insert or update, the
database simply finds the highest number, adds 1, and inserts the
resulting value.
Because the highest number is "2" in the example give, the next autoincrement value will be "3".
The only way to prevent this behavior within autoincrement usage would be to specify the value on insert.
If you really want something unique, you can use the UNIQUEIDENTIFIER described in the documentation here.
Here's an example:
create table "MyTable" (id identity not null, gid UNIQUEIDENTIFIER default newid(), name varchar(50));
insert into "MyTable" (name) values ('Row 1');
insert into "MyTable" (name) values ('Row 2');
insert into "MyTable" (name) values ('Row 3');
select * from "mytable";
delete from "MyTable" where id = 3;
insert into "MyTable" (name) values ('Row 4');
select * from "mytable";
And the results:
<<<<<<<<<<<<<<<<<<<<<<<<
id gid name
=========== ==================================== ==================================================
1 1F74A3E5-6EFC-4382-81DA-94F58710AD73 Row 1
2 B5FEFA7A-F85B-486A-A7CA-9615EAD1A601 Row 2
3 E327B2CF-D01D-4039-BB83-CAD966C72131 Row 3
<<<<<<<<<<<<<<<<<<<<<<<<
id gid name
=========== ==================================== ==================================================
1 1F74A3E5-6EFC-4382-81DA-94F58710AD73 Row 1
2 B5FEFA7A-F85B-486A-A7CA-9615EAD1A601 Row 2
3 66F0E55C-52CF-4183-87EE-2C0FDD6E45B6 Row 4