[odb-users] How to make default value work

[walker at kolomedical.com]

Hi,

    I meet the issue to add the option default value to sqlite database,  it shows “19 (1299): NOT NULL constraint failed: Examination.exam_datetime”，

how can I make this work for  below define, Thanks!
#pragma db options("DEFAULT CURRENT_TIMESTAMP")
    odb::nullable<std::string> exam_datetime_;




王华 - Walker