changing string to date field in rails mysql -


i wanna convert data type string date format. using mysql database. values stored in "mm/dd/yyyy" format. if try convert string date using .to_date function date values "02/28/2017", throwing invalid date error. so, decided convert datatype. suppose if convert datatype using migration happens existing records? records important. should now?

rails g migration change_date_format_in_my_table  class changedateformatinmytable < activerecord::migration   def     change_column :my_table, :my_column, :date   end    def down     change_column :my_table, :my_column, :string   end end


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