o, lsf沒有問題，是main query的兩個table alias. 問題出在

來源: 布衣之才 於 2012-08-08 20:09:14 [] [博客] [舊帖] [給我悄悄話] 閱讀數 : (428 bytes)
回答: 你所指代的 o and lsf 分別在這兩個 由 JJGL 於 2012-08-08 16:50:20

documentation_level_desc in the first sub query has been aliased  as cmdm_doc_type, and  SPECIAL_FEATURE_CODE in the second sub query has been aliased as Harp_CODE. Therefore in the main where clause the original field names can not be used, instead their alias names should be used.

請您先登陸，再發跟帖！