Python pyodbc：包含PIVOT的查询

我对包含PIVOT（oracle）语句的oracle查询有问题

从表中获取数据没有问题，但如果查询包含pivot语句，则会出现错误：

File "C:\ProgramData\Anaconda2\lib\site-packages\pandas\io\sql.py", line 1440, in read_query
    columns = [col_desc[0] for col_desc in cursor.description]

TypeError: 'NoneType' object is not iterable

有没有办法解决这个问题？ Thanx提前：）

我的代码：

import pyodbc
from pandas import read_sql_query

dbInst = XXX
schema = YYY
passwd = ZZZ

connString = "Driver={Microsoft ODBC for Oracle};Server=" +  dbInst + ';Uid=' + schema + ';Pwd=' + passwd + ";"

sqlWorks = """
select 'A' as  state, 1 as value from dual
"""

sqlDoesNotWork = """
With T As 
(
  select 'A' as  state, 1 as value from dual
)
Select *
From T
Pivot
(
  Sum(Value)
  For State In ('A' As States)
)
"""

conn = pyodbc.connect(connString)
data = read_sql_query(sqlWorks, conn)
print data

data2 = read_sql_query(sqlDoesNotWork, conn)
print data2

---

请尝试在选择中使用“状态”而不是“*”。不幸的是，结果相同：(