Devart Forums

Posted: **Tue 28 Apr 2020 19:59**

Hi,
using c++ builder 10.3.2/vcl/win32/unidac 8.1.2/direct mode.

In db:

create table LIBELLES (id integer primary key autoincrement not null, libelle nvarchar(50), categ nvarchar(10), seq integer);

sqllite allows this:

insert into libelles(libelle,categ, seq) values ('aaa','bbb',1);
insert into libelles(id, libelle,categ, seq) values (null, 'aaa','bbb',1);

Each time, an id is automatically allocated.

In c++ builder, I have a TUniQuery and a TDBNavigator
UniQuery1.SQL:

SELECT ID, LIBELLE 
FROM LIBELLES
WHERE Categ=:CATEG
ORDER BY SEQ, LIBELLE

UniQuery1.SQLInsert:

INSERT INTO LIBELLES
  (libelle, categ, seq)
VALUES
  (:libelle, :categ, :seq)

When I insert a row, I get an exception:

Project pTSheet.exe raised exception class EDatabaseError with message 'Field 'id' must have a value'.

How can I ignore this error as an autoincremented is created by db?
Regards.

Posted: **Wed 29 Apr 2020 10:33**

To get auto-increment fields automatically, you can choose between:

- disabling the option RequiredFields :

 UniQuery1->Options->RequiredFields = false;

- assigning the false value to the "id" field in the Required property:

UniQuery1->FieldByName("id")->Required = false;

SQLite->id autoincrement