Adding date/datetime incremental replacer for not violent unique constraint

[kibitan]

table:
  date_birthday: 1990-01-%{increment_data}
  time: 2010-01-01 %{increment_time}

it would be replaced as an incremental date replace.

date

• 1990-01-01
• 1990-01-02
• .....
• 1991-12-31

time

• 2010-01-01 00:00:00
• 2010-01-01 00:00:01
• ....
• 2010-01-02 23:59:59

considering point

• is %{increment_data} %{increment_time} good syntax?