prepare_column_options

# File activerecord/lib/active_record/connection_adapters/mysql/schema_dumper.rb, line 8
          def prepare_column_options(column)
            spec = super
            spec[:unsigned] = "true" if column.unsigned?
            spec[:auto_increment] = "true" if column.auto_increment?

            if /\A(?<size>tiny|medium|long)(?:text|blob)/ =~ column.sql_type
              spec = { size: size.to_sym.inspect }.merge!(spec)
            end

            if @connection.supports_virtual_columns? && column.virtual?
              spec[:as] = extract_expression_for_virtual_column(column)
              spec[:stored] = "true" if /\b(?:STORED|PERSISTENT)\b/.match?(column.extra)
              spec = { type: schema_type(column).inspect }.merge!(spec)
            end

            spec
          end