How to set default date time as system date time in mysql

Question

I am trying to set my columns default date time to system datetime. It shows me an error

Invalid default value for 'InsertionDate'

alter table `vts`.`tblpickpoint` 
  add column `InsertionDate` 
      datetime DEFAULT 'Now()' NULL after `PickPointLatLong`

Answer 1

The default value for a column in mysql cannot be the result of a function.

The one exception is the current_timestamp as astander points out.

Your statement should be

alter table `vts`.`tblpickpoint` 
  add column `InsertionDate` TIMESTAMP 
             DEFAULT CURRENT_TIMESTAMP