two timestamp fields.
  
The actual problem here was that CREATE TABLE allowed zero
date as a default value for a TIMESTAMP column in NO_ZERO_DATE mode.
  
The thing is that for TIMESTAMP date type specific rule is applied:
  column_name TIMESTAMP == column_name TIMESTAMP DEFAULT 0
whever for any other date data type
  column_name TYPE == column_name TYPE DEFAULT NULL
  
The fix is to raise an error when we're in NO_ZERO_DATE mode and
there is TIMESTAMP column w/o default value.