ORA-00976: Specified pseudocolumn or operator not allowed here.
文档解释ORA-00976:Specifiedpseudocolumnoroperatornotallowedhere.Cause:LEVEL,PRIOR,ROWNUM,CONNECT_BY_ROOT,CONNECT_BY_ISLEAForCONNECT_BY_ISCYCLEwasspecifiedatanillega...