I just realized that one of my database insert() commands failed due to violation of a not null constraint - I just filled no data into this field.
Problem is, it took m
I found that one can use insertOrThrow() instead of insert, at least you get an exception when, something goes wrong, saying android.database.sqlite.SQLiteConstraintException: error code 19: constraint failed - even though I actually would wish/expect it would be even clearer and tell me which column has an error or so, but maybe I'm too demanding about SQLIte's feaures here.