          # Some backends return 1 item tuples with strings, and others return
          # tuples with integers and strings. Flatten them out into strings.
          for row in result[0]:
              if not isinstance(row, str):
                  yield ' '.join(str(c) for c in row)
              else:
                  yield row
  
  
  class SQLInsertCompiler(SQLCompiler):
 
</s>
                yield ' '.join(output_formatter(c) for c in row)
          # Some backends return 1 item tuples with strings, and others return
          # tuples with integers and strings. Flatten them out into strings.
          for row in result[0]:
              if not isinstance(row, str):
                yield ' '.join(output_formatter(c) for c in row)
              else:
                  yield row
  
  
  class SQLInsertCompiler(SQLCompiler):
keep keep keep keep replace keep keep keep keep keep
 Fixed #32226 -- Fixed JSON format of QuerySet.explain() on PostgreSQL.
django/db/models/sql/compiler.py