print debug

Author: Matt Roeschke

pandas/tests/io/test_sql.py

@@ -1986,6 +1986,8 @@ def psql_insert_copy(table, conn, keys, data_iter):
  'col3': ['a', 'n']})
  expected.to_sql('test_copy_insert', self.conn, method=psql_insert_copy)
  result = sql.read_sql_table('test_copy_insert', self.conn)
+ print(result)
+ print(expected)
  tm.assert_frame_equal(result, expected)