method

change_column_null

Importance_0
change_column_null(table_name, column_name, null, default = nil) public

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# File activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 504
      def change_column_null(table_name, column_name, null, default = nil)
        column = column_for(table_name, column_name)

        unless null || default.nil?
          execute("UPDATE #{quote_table_name(table_name)} SET #{quote_column_name(column_name)}=#{quote(default)} WHERE #{quote_column_name(column_name)} IS NULL")
        end

        change_column table_name, column_name, column.sql_type, :null => null
      end
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