The size of the FMDB file does not decrease even after DELETE.

DELETE does not reduce the size of the FMDB file (xxx.sqlite).

As one of the solutions, I thought that if I create a new sqlite file and copy it as much as I need with an insert, I will be able to create the smallest size file.

However, with this method, it will take a long time to process, so I am troubled.

Is there any good way?