add_column_options!

# File activerecord/lib/active_record/connection_adapters/postgresql/schema_creation.rb, line 67
          def add_column_options!(sql, options)
            if options[:collation]
              sql << " COLLATE \"#{options[:collation]}\""
            end

            if as = options[:as]
              sql << " GENERATED ALWAYS AS (#{as})"

              if options[:stored]
                sql << " STORED"
              else
                raise ArgumentError, <<~MSG
                  PostgreSQL currently does not support VIRTUAL (not persisted) generated columns.
                  Specify 'stored: true' option for '#{options[:column].name}'
                MSG
              end
            end
            super
          end

          # Returns any SQL string to go between CREATE and TABLE. May be nil.
          def table_modifier_in_create(o)
            # A table cannot be both TEMPORARY and UNLOGGED, since all TEMPORARY
            # tables are already UNLOGGED.
            if o.temporary
              " TEMPORARY"
            elsif o.unlogged
              " UNLOGGED"
            end
          end
      end