              return ' ' + self.connection.ops.tablespace_sql(db_tablespace)
          return ''
  
      def _create_index_sql(self, model, fields, *, name=None, suffix='', using='',
                            db_tablespace=None, col_suffixes=(), sql=None, opclasses=(),
                            condition=None):
          """
          Return the SQL statement to create the index for one or several fields.
          `sql` can be specified if the syntax differs from the standard (GIS
 
</s> remove             return Statement(
                self.sql_create_unique,
                table=table,
                name=name,
                columns=columns,
            )
 </s> add             sql = self.sql_create_unique
        return Statement(
            sql,
            table=table,
            name=name,
            columns=columns,
            condition=self._index_condition_sql(condition),
        ) </s> remove             condition=(' WHERE ' + condition) if condition else '',
 </s> add             condition=self._index_condition_sql(condition), </s> remove             return Statement(
                self.sql_create_unique_index,
                table=table,
                name=name,
                columns=columns,
                condition=' WHERE ' + condition,
            ) if self.connection.features.supports_partial_indexes else None
 </s> add             if not self.connection.features.supports_partial_indexes:
                return None
            sql = self.sql_create_unique_index
    def _index_condition_sql(self, condition):
        if condition:
            return ' WHERE ' + condition
        return ''

              return ' ' + self.connection.ops.tablespace_sql(db_tablespace)
          return ''
  
    def _index_condition_sql(self, condition):
        if condition:
            return ' WHERE ' + condition
        return ''

      def _create_index_sql(self, model, fields, *, name=None, suffix='', using='',
                            db_tablespace=None, col_suffixes=(), sql=None, opclasses=(),
                            condition=None):
          """
          Return the SQL statement to create the index for one or several fields.
          `sql` can be specified if the syntax differs from the standard (GIS
keep keep add keep keep keep keep keep keep
 Refs #30913 -- Added BaseDatabaseSchemaEditor._index_condition_sql(). 
django/db/backends/base/schema.py