/ Ruby on Rails
/
method

change_column_null

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

No documentation available.

# File activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb, line 888
      def change_column_null(table_name, column_name, null, default = nil)
        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
        execute("ALTER TABLE #{quote_table_name(table_name)} ALTER #{quote_column_name(column_name)} #{null ? 'DROP' : 'SET'} NOT NULL")
      end