使用'NOCYCLE'时，PROC编译器无法与先前连接

Question

我是PROC的新手，我正在编译.pc文件中的以下查询，

`
SELECT * FROM CUST
WHERE CUSTOMER_ID = :sqli_customer_id
START WITH SUBSCRIBER_NO = :sqli_subscriber_no
CONNECT BY NOCYCLE PRIOR PRV_CTN = SUBSCRIBER_NO
ORDER BY ROWNUM DESC
`

以下查询无法在PROC编译器中编译 但是当我从查询中删除 NOCYCLE 时，文件会成功编译。

我在NOCYCLE时遇到以下错误：

PCC-S-02201, Encountered the symbol "PRIOR" when expecting one of the following:
   = ( * < > + - / . @ ^= | != <= >= <> at, not, between, in, is, like, day, hour, minute, month, second, year, 
The symbol "*" was substituted for "PRIOR" to continue.

`

任何建议都会有所帮助。

谢谢，

Nitin T。