Comparison fails on dataframes with a single column about datacompy HOT 8 OPEN

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ParseException                            Traceback (most recent call last)
Cell In[7], line 12
      2 df_2 = spark.createDataFrame([{"a": 1}])
      4 compare = datacompy.SparkCompare(
      5     spark,
      6     df_1,
   (...)
      9     cache_intermediates=True,
     10 )
---> 12 compare.rows_both_mismatch.count()

File /opt/venv/lib/python3.8/site-packages/datacompy/spark.py:356, in SparkCompare.rows_both_mismatch(self)
    354 """pyspark.sql.DataFrame: Returns all rows in both dataframes that have mismatches"""
    355 if self._all_rows_mismatched is None:
--> 356     self._merge_dataframes()
    358 return self._all_rows_mismatched

File /opt/venv/lib/python3.8/site-packages/datacompy/spark.py:462, in SparkCompare._merge_dataframes(self)
    458 where_cond = " OR ".join(
    459     ["A." + name + "_match= False" for name in self.columns_compared]
    460 )
    461 mismatch_query = """SELECT * FROM matched_table A WHERE {}""".format(where_cond)
--> 462 self._all_rows_mismatched = self.spark.sql(mismatch_query).orderBy(
    463     self._join_column_names
    464 )

File /opt/spark/python/lib/pyspark.zip/pyspark/sql/session.py:1440, in SparkSession.sql(self, sqlQuery, args, **kwargs)
   1438 try:
   1439     litArgs = {k: _to_java_column(lit(v)) for k, v in (args or {}).items()}
-> 1440     return DataFrame(self._jsparkSession.sql(sqlQuery, litArgs), self)
   1441 finally:
   1442     if len(kwargs) > 0:

File /opt/spark/python/lib/py4j-0.10.9.7-src.zip/py4j/java_gateway.py:1322, in JavaMember.__call__(self, *args)
   1316 command = proto.CALL_COMMAND_NAME +\
   1317     self.command_header +\
   1318     args_command +\
   1319     proto.END_COMMAND_PART
   1321 answer = self.gateway_client.send_command(command)
-> 1322 return_value = get_return_value(
   1323     answer, self.gateway_client, self.target_id, self.name)
   1325 for temp_arg in temp_args:
   1326     if hasattr(temp_arg, "_detach"):

File /opt/spark/python/lib/pyspark.zip/pyspark/errors/exceptions/captured.py:175, in capture_sql_exception.<locals>.deco(*a, **kw)
    171 converted = convert_exception(e.java_exception)
    172 if not isinstance(converted, UnknownException):
    173     # Hide where the exception came from that shows a non-Pythonic
    174     # JVM exception message.
--> 175     raise converted from None
    176 else:
    177     raise

ParseException: 
[PARSE_SYNTAX_ERROR] Syntax error at or near end of input.(line 1, pos 36)

== SQL ==
SELECT * FROM matched_table A WHERE 
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